What are the cheapest airlines flying from London to Chicago O'Hare Intl Airport round-trip?

Flying on British Airways is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at £415. Additional return tickets that might be worth considering are offered by SWISS and Delta, with the lowest prices starting at £416 and £416, respectively. You may be able to fly from London to Chicago O'Hare Intl Airport for 24% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from London to Chicago O'Hare Intl Airport one-way?

For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as £386. Users have also found prices from £397 and £405 on Icelandair and TAP AIR PORTUGAL, respectively.

What are the most popular routes from London to Chicago O'Hare Intl Airport?

When deciding which route to take from London to Chicago O'Hare Intl Airport consider London Heathrow - Chicago O'Hare Intl, London Gatwick - Chicago O'Hare Intl or London City - Chicago O'Hare Intl as they are the most popular.

What are the cheapest flights from London to Chicago O'Hare Intl Airport?

The cheapest flight price from London to Chicago O'Hare Intl Airport is £377. On average you can expect to pay £1,529. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for £331.

What are the most reliable airlines from London to Chicago O'Hare Intl Airport?

Consider Air Canada (93%), Austrian Airlines (93%) or United Airlines (93%) when booking your flight. These represent the most reliable airlines when flying from London to Chicago O'Hare Intl Airport.

What are the most popular airlines that fly from London to Chicago O'Hare Intl Airport?

Before booking your flight from London to Chicago O'Hare Intl Airport check out the most popular airlines for this route: American Airlines, Finnair or British Airways.

What is the cheapest day to fly round-trip from London to Chicago O'Hare Intl Airport?

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 9% when planning your travel around this day of the week.

How far in advance should I book a flight from London to Chicago O'Hare Intl Airport?

To save on the cost of your flight from London to Chicago O'Hare Intl Airport, book at least 45 days before your planned departure. Booking around this time can save you about 25% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £515 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £619.

What is the cheapest month to fly from London to Chicago O'Hare Intl Airport?

February is one of the best times of the year to fly to Chicago O'Hare Intl Airport from London. Prices for February average £526 per person but you can even find prices for as low as £319. The most expensive prices can be found in the month of August. Opting for a February flight can save you 26% on your journey compared to booking in August

Can I find deals for flights from London to O'Hare Intl that include hotel bookings?

Yes. In addition to deals on London to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to O'Hare Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to O'Hare Intl.

Can I find deals for business class flights from London to O'Hare Intl?

Yes. Cheapflights offers flight deals from London to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£386+ Flights from London to Chicago O'Hare Intl Airport

Cheapflights Tip: The best prices from London to Chicago O'Hare Intl are usually found in February or March, booked 83 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from London to O'Hare Intl

Round-trip from	£415
One-way from	£386
Popular in	August
Cheapest in	February
Average price	£573
Good round-trip deal	£490 or less
Good one-way deal	£453 or less

British Airways
11/9-19/9
2 total stops
24h 44m total
London to Chicago

Search Deals

Aer Lingus
19/9
1 total stop
11h 10m total
London to Chicago

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£54 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Price to beat on a round-trip flight from London (LON) to Chicago O'Hare Intl.

Search Deals

Price to beat on a one-way flight from London (LON) to Chicago O'Hare Intl.

Search Deals

Find flight deals from London to O'Hare Intl

Cheapest flights from London to O'Hare Intl
Explore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 June 2025.

Tue 24/614:00LGW - ORD

1 stop34h 44mMultiple Airlines

Wed 9/708:09ORD - LGW

1 stop16h 46mMultiple Airlines

Deal found 17/6£415

Thu 11/911:00LHR - ORD

1 stop12h 51mBritish Airways

Fri 19/918:52ORD - LHR

1 stop11h 53mBritish Airways

Deal found 17/6£415

Thu 11/906:30LHR - ORD

2 stops16h 04mDelta

Thu 18/913:35ORD - LHR

1 stop13h 20mDelta

Deal found 19/6£416

Fri 31/1018:40LGW - ORD

1 stop24h 05mSWISS

Sat 8/1116:10ORD - LGW

1 stop19h 40mSWISS

Deal found 18/6£417

Fri 5/906:50LHR - ORD

1 stop11h 15mMultiple Airlines

Sun 21/916:00ORD - LHR

Nonstop8h 20mMultiple Airlines

Deal found 18/6£417

Wed 27/809:25LCY - ORD

1 stop12h 30mSWISS

Tue 30/919:05ORD - LCY

1 stop16h 25mSWISS

Deal found 17/6£419

Fri 22/808:00LHR - ORD

1 stop14h 10mTAP AIR PORTUGAL

Mon 25/818:10ORD - LHR

1 stop34h 10mTAP AIR PORTUGAL

Deal found 18/6£419

Sun 7/906:30LHR - ORD

1 stop13h 40mKLM

Thu 18/913:16ORD - LHR

1 stop11h 29mKLM

Deal found 16/6£420

Thu 18/912:35LTN - ORD

1 stop12h 25mMultiple Airlines

Mon 22/921:15ORD - LTN

1 stop12h 45mMultiple Airlines

Deal found 18/6£420

Thu 18/906:55STN - ORD

1 stop13h 05mMultiple Airlines

Mon 22/915:45ORD - STN

1 stop10h 05mMultiple Airlines

Deal found 18/6£420

Fri 29/809:25LCY - ORD

1 stop12h 30mMultiple Airlines

Thu 9/1022:30ORD - LCY

1 stop11h 55mMultiple Airlines

Deal found 18/6£421

Fri 5/909:30LHR - ORD

2 stops14h 42mAir Canada

Sat 13/912:00ORD - LHR

2 stops12h 30mAir Canada

Deal found 19/6£421

Best flights from London to O'Hare Intl
Discover carefully curated flight deals from London to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 June 2025.

Thu 11/911:00LHR - ORD

1 stop12h 51mBritish Airways

Fri 19/918:52ORD - LHR

1 stop11h 53mBritish Airways

Deal found 17/6£415

Wed 10/908:15STN - ORD

1 stop11h 45mMultiple Airlines

Wed 17/915:45ORD - STN

1 stop15h 00mMultiple Airlines

Deal found 19/6£415

Fri 31/1018:40LGW - ORD

1 stop24h 05mSWISS

Sat 8/1116:10ORD - LGW

1 stop19h 40mSWISS

Deal found 19/6£416

Thu 11/906:30LHR - ORD

2 stops16h 04mDelta

Thu 18/913:35ORD - LHR

1 stop13h 20mDelta

Deal found 19/6£416

Fri 22/808:00LHR - ORD

1 stop14h 10mTAP AIR PORTUGAL

Mon 25/818:10ORD - LHR

1 stop34h 10mTAP AIR PORTUGAL

Deal found 18/6£419

Sun 7/906:30LHR - ORD

1 stop13h 40mKLM

Thu 18/913:16ORD - LHR

1 stop11h 29mKLM

Deal found 16/6£420

Wed 1/1015:40LGW - ORD

1 stop11h 35mIcelandair

Mon 6/1019:25ORD - LGW

1 stop13h 10mIcelandair

Deal found 19/6£421

Fri 5/909:30LHR - ORD

2 stops14h 42mAir Canada

Sat 13/912:00ORD - LHR

2 stops12h 30mAir Canada

Deal found 19/6£421

Wed 1/1008:45LCY - ORD

1 stop12h 10mLufthansa

Mon 6/1015:05ORD - LCY

1 stop21h 30mLufthansa

Deal found 19/6£423

Mon 6/1010:20LHR - ORD

1 stop11h 50mScandinavian Airlines

Wed 5/1119:20ORD - LHR

1 stop14h 40mScandinavian Airlines

Deal found 18/6£424

Mon 24/1109:20LCY - ORD

1 stop11h 10mVirgin Atlantic

Wed 3/1216:25ORD - LCY

1 stop18h 10mVirgin Atlantic

Deal found 19/6£425

Fri 10/1006:00LHR - ORD

1 stop13h 20mAustrian Airlines

Sat 18/1012:55ORD - LHR

1 stop12h 00mAustrian Airlines

Deal found 19/6£433

Direct flights from London to O'Hare Intl
Explore direct flight options from London to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 19 June 2025.

Mon 10/1111:00LHR - ORD

Nonstop8h 55mBritish Airways

Fri 14/1121:45ORD - LHR

Nonstop7h 45mBritish Airways

Deal found 18/6£425

Thu 25/909:15LHR - ORD

Nonstop8h 35mAmerican Airlines

Sat 27/922:35ORD - LHR

Nonstop7h 40mAmerican Airlines

Deal found 18/6£428

Tue 12/814:25LHR - ORD

Nonstop8h 35mFinnair

Tue 9/917:45ORD - LHR

Nonstop7h 35mFinnair

Deal found 19/6£437

Sat 23/814:10LHR - ORD

Nonstop9h 10mLufthansa

Sat 6/918:00ORD - LHR

Nonstop8h 20mLufthansa

Deal found 18/6£447

Fri 29/808:30LHR - ORD

Nonstop8h 55mBrussels Airlines

Fri 12/916:00ORD - LHR

Nonstop8h 20mBrussels Airlines

Deal found 17/6£451

Tue 7/1008:30LHR - ORD

Nonstop9h 00mAustrian Airlines

Sat 25/1018:50ORD - LHR

Nonstop8h 05mAustrian Airlines

Deal found 19/6£455

Mon 30/608:30LHR - ORD

Nonstop8h 55mUnited Airlines

Sun 13/716:05ORD - LHR

Nonstop8h 15mUnited Airlines

Deal found 17/6£495

Tue 28/1010:25LHR - ORD

Nonstop9h 20mMultiple Airlines

Sat 1/1122:05ORD - LHR

Nonstop8h 10mMultiple Airlines

Deal found 17/6£524

Sun 29/609:15LHR - ORD

Nonstop8h 40mIberia

Mon 7/717:40ORD - LHR

Nonstop7h 40mIberia

Deal found 17/6£552

Last-minute flights from London to O'Hare Intl
Discover last-minute flight deals from London to O'Hare Intl. Data last updated 19 June 2025 and is based on user searches.

Tue 24/614:00LGW - ORD

1 stop34h 44mMultiple Airlines

Wed 9/708:09ORD - LGW

1 stop16h 46mMultiple Airlines

Deal found 17/6£415

Tue 24/618:40LHR - ORD

1 stop27h 15mSWISS

Tue 8/714:20ORD - LHR

1 stop11h 35mSWISS

Deal found 17/6£417

Tue 24/606:00LHR - ORD

1 stop12h 50mMultiple Airlines

Tue 8/713:05ORD - LHR

1 stop11h 50mMultiple Airlines

Deal found 17/6£463

Tue 24/608:40LHR - ORD

1 stop11h 30mVirgin Atlantic

Tue 8/717:20ORD - LHR

1 stop9h 35mVirgin Atlantic

Deal found 17/6£469

Tue 24/606:00LHR - ORD

1 stop13h 20mAustrian Airlines

Tue 8/713:05ORD - LHR

1 stop15h 35mAustrian Airlines

Deal found 17/6£483

Tue 24/606:55LHR - ORD

1 stop17h 20mLufthansa

Wed 9/714:35ORD - LHR

1 stop15h 45mLufthansa

Deal found 17/6£484

Tue 24/606:00LHR - ORD

1 stop13h 20mAustrian Airlines

Mon 30/616:05ORD - LHR

Nonstop8h 15mAustrian Airlines

Deal found 17/6£483

Wed 25/614:25LHR - ORD

Nonstop8h 35mBritish Airways

Sat 18/1016:55ORD - LHR

Nonstop7h 55mBritish Airways

Deal found 18/6£444

Wed 25/607:40LHR - ORD

1 stop14h 05mAmerican Airlines

Tue 7/1022:35ORD - LHR

Nonstop7h 40mAmerican Airlines

Deal found 17/6£457

Wed 25/608:40LHR - ORD

1 stop11h 30mDelta

Tue 7/1010:10ORD - LHR

1 stop14h 35mDelta

Deal found 18/6£461

Wed 25/615:35LGW - ORD

1 stop11h 40mIcelandair

Tue 7/1019:25ORD - LGW

1 stop13h 15mIcelandair

Deal found 17/6£484

Thu 26/606:50LHR - ORD

1 stop13h 55mUnited Airlines

Thu 10/718:05ORD - LHR

Nonstop8h 15mUnited Airlines

Deal found 17/6£472

One-way flights from London to O'Hare Intl
Search for one-way flight options from London to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 19 June 2025.

Fri 19/908:50LHR - ORD

1 stop11h 10mAer Lingus

Deal found 18/6£386

Sat 30/810:00LGW - ORD

2 stops19h 33mMultiple Airlines

Deal found 18/6£388

Thu 18/920:50LHR - ORD

2 stops25h 40mMultiple Airlines

Deal found 18/6£388

Fri 19/909:05LCY - ORD

2 stops16h 24mMultiple Airlines

Deal found 19/6£388

Sun 30/1106:00LTN - ORD

1 stop17h 20mMultiple Airlines

Deal found 18/6£390

Wed 13/808:30STN - ORD

2 stops16h 59mMultiple Airlines

Deal found 18/6£390

Thu 13/1111:55LGW - ORD

1 stop11h 25mIcelandair

Deal found 19/6£397

Wed 13/818:45LHR - ORD

1 stop24h 25mTAP AIR PORTUGAL

Deal found 19/6£405

Thu 28/808:45LCY - ORD

1 stop12h 10mLufthansa

Deal found 18/6£415

Mon 18/809:15LHR - ORD

Nonstop8h 40mBritish Airways

Deal found 19/6£419

Wed 25/610:35LGW - ORD

1 stop35h 35mTAP AIR PORTUGAL

Deal found 18/6£430

Sun 5/1008:30LHR - ORD

Nonstop9h 00mLufthansa

Deal found 18/6£434

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 11/9

11:00-17:51

1 stop12h 51m

Chicago O'Hare Intl

Fri 19/9

18:52-12:45

1 stop11h 53m

£415

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 29/8

08:30-23:25

2 stops20h 55m

Chicago O'Hare Intl

Thu 9/10

08:50-06:55

1 stop16h 05m

£416

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 31/10

18:40-13:45

1 stop24h 05m

Chicago O'Hare Intl

Sat 8/11

16:10-17:50

1 stop19h 40m

£417

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 5/9

06:50-12:05

1 stop11h 15m

Chicago O'Hare Intl

Sun 21/9

16:00-06:20

Nonstop8h 20m

£417

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 22/8

08:00-16:10

1 stop14h 10m

Chicago O'Hare Intl

Mon 25/8

18:10-10:20

1 stop34h 10m

£419

LondonChicago

LCY - ORD

LCYORD

London City

Wed 27/8

09:25-15:55

1 stop12h 30m

Chicago O'Hare Intl

Tue 30/9

19:05-17:30

1 stop16h 25m

£419

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 7/9

06:30-14:10

1 stop13h 40m

Chicago O'Hare Intl

Thu 18/9

13:16-06:45

1 stop11h 29m

£420

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 20/8

06:30-16:45

2 stops16h 15m

Chicago O'Hare Intl

Sun 14/9

18:10-12:35

1 stop12h 25m

£420

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 18/9

12:35-19:00

1 stop12h 25m

Chicago O'Hare Intl

Mon 22/9

21:15-16:00

1 stop12h 45m

£420

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 18/9

06:55-14:00

1 stop13h 05m

Chicago O'Hare Intl

Mon 22/9

15:45-07:50

1 stop10h 05m

£420

Flights are sorted by cheapest return flights first.

Deals found on 18/6

Showing 1-10 of 58 results

...

Best time to book a flight from London to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from London with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Chicago O'Hare Intl Airport

How far ahead should I book a flight from London to Chicago O'Hare Intl Airport?

The best time to book flights from London to Chicago O'Hare Intl Airport is 83 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London to Chicago O'Hare Intl Airport?

Currently, January is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of £595). Flying from London to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to ORD?

It’s typically best to fly out from London to Chicago O'Hare Intl Airport in the evening. Doing so could potentially save you 16% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from London to Chicago O'Hare Intl Airport?

Travellers seeking maximum savings on their London to Chicago O'Hare Intl Airport flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London to Chicago O'Hare Intl Airport

The most flights from LON to ORD are scheduled on a Thursday (53 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (43 on average).

Rainfall in O'Hare Intl by month

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

Temperature in O'Hare Intl by month

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Reviews of airlines servicing O'Hare Intl

Get a feel of what it's like to fly with Delta, KLM and LOT from London to Chicago by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,964 reviews

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,366 reviews

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

LOT

7.6

Good

1,081 reviews

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Austrian Airlines

7.6

Good

804 reviews

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Finnair

7.6

Good

1,292 reviews

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from London to Chicago O'Hare Intl Airport round-trip?
Flying on British Airways is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at £415. Additional return tickets that might be worth considering are offered by SWISS and Delta, with the lowest prices starting at £416 and £416, respectively. You may be able to fly from London to Chicago O'Hare Intl Airport for 24% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from London to Chicago O'Hare Intl Airport one-way?
For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as £386. Users have also found prices from £397 and £405 on Icelandair and TAP AIR PORTUGAL, respectively.
What are the most popular routes from London to Chicago O'Hare Intl Airport?
When deciding which route to take from London to Chicago O'Hare Intl Airport consider London Heathrow - Chicago O'Hare Intl, London Gatwick - Chicago O'Hare Intl or London City - Chicago O'Hare Intl as they are the most popular.
What are the most reliable airlines from London to Chicago O'Hare Intl Airport?
Consider Air Canada (93%), Austrian Airlines (93%) or United Airlines (93%) when booking your flight. These represent the most reliable airlines when flying from London to Chicago O'Hare Intl Airport.
What are the cheapest flights from London to Chicago O'Hare Intl Airport?
The cheapest flight price from London to Chicago O'Hare Intl Airport is £377. On average you can expect to pay £1,529. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for £331.
Can I find deals for flights from London to O'Hare Intl that include hotel bookings?
Yes. In addition to deals on London to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to O'Hare Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to O'Hare Intl.
Can I find deals for business class flights from London to O'Hare Intl?
Yes. Cheapflights offers flight deals from London to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to Chicago O'Hare Intl Airport?
Currently, January is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of £595). Flying from London to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 10 airlines flying from London to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£313	Average£490	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Scandinavian Airlines	Cheapest£353	Average£502	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	Cheapest£367	Average£608	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£385	Average£534	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Brussels Airlines	Cheapest£394	Average£640	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Lufthansa	Cheapest£400	Average£577	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Austrian Airlines	Cheapest£401	Average£587	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
United Airlines	Cheapest£403	Average£574	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest£404	Average£625	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
British Airways	Cheapest£408	Average£572	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

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Cheapflights helps you search for flights from London to O'Hare Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from London to O'Hare Intl?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to O'Hare Intl for you. Better yet — we are completely free to use.

Can Cheapflights find flights from London to O'Hare Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to O'Hare Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to O'Hare Intl become cheaper?

Yes! Start tracking prices for London to O'Hare Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from London to Chicago O'Hare Intl Airport from £386

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London to Chicago O'Hare Intl are usually found in February or March, booked 83 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from London to O'Hare Intl

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Find flight deals from London to O'Hare Intl

Cheapest flights from London to O'Hare IntlExplore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 June 2025.

Explore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 June 2025.

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Best time to book a flight from London to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Chicago O'Hare Intl Airport

How far ahead should I book a flight from London to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a return flight from London to O'Hare Intl. Price data was last updated on 13 June 2025.

What is the cheapest month to book a flight from London to Chicago O'Hare Intl Airport?

What is the cheapest time of day to fly from LON to ORD?

Find hourly flight availability from London to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 June 2025.

What is the cheapest day to fly from London to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly return from London to O'Hare Intl. Price data was last updated on 16 December 2024.

Weekly flight availability from London to Chicago O'Hare Intl Airport

Explore weekly flight availability from London to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 19 June 2025.

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing O'Hare Intl

Get a feel of what it's like to fly with Delta, KLM and LOT from London to Chicago by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from London to Chicago O'Hare Intl Airport round-trip?

What are the cheapest airlines to fly from London to Chicago O'Hare Intl Airport one-way?

What are the most popular routes from London to Chicago O'Hare Intl Airport?

What are the most reliable airlines from London to Chicago O'Hare Intl Airport?

What are the cheapest flights from London to Chicago O'Hare Intl Airport?

Can I find deals for flights from London to O'Hare Intl that include hotel bookings?

How can I find direct flights from London to O'Hare Intl?

Can I find deals for business class flights from London to O'Hare Intl?

What is the cheapest month to book a flight from London to Chicago O'Hare Intl Airport?

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Fly from London to O'Hare Intl on these airlines

Choose from the following airlines for your flight from London to O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on 19 June 2025.

Top 10 airlines flying from London to O'Hare Intl

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Cheapest flights from London to O'Hare Intl
Explore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 June 2025.