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Cheap flights from Glasgow Intl Airport to London Heathrow Airport from £41

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 19/8. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — LHR
1 Jul — 8 Jul1
1 adult

Cheapflights Tip: The best prices from Glasgow Intl to London Heathrow are usually found in January or November, booked 85 days in advance, depart on a Friday or Wednesday and return on a Tuesday

Cheap flight deals from Glasgow Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow Intl (GLA) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 26 June 2025.

Round-trip from

£77

One-way from

£41

Popular in

May

Cheapest in

January

Average price

£128

Good round-trip deal

£444 or less

Good one-way deal

£131 or less
British Airways
  • British Airways
  • 27/7-29/7
  • Nonstop
  • 3h 00m total
  • Glasgow to London
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British Airways
  • British Airways
  • 19/8
  • Nonstop
  • 1h 20m total
  • Glasgow to London
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Highest demand for flights based on searches. 11% potential increase in price (£10 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Glasgow Intl to London Heathrow.
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Price to beat on a one-way flight from Glasgow Intl to London Heathrow.
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Find flight deals from Glasgow Intl to Heathrow

Cheapest flights from Glasgow Intl to Heathrow
Explore the most affordable flight options available from Glasgow Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2025.

Sun 27/707:35GLA - LHR
Nonstop1h 35mBritish Airways
Tue 29/722:00LHR - GLA
Nonstop1h 25mBritish Airways
Deal found 26/6£77
Thu 24/706:00GLA - LHR
1 stop5h 45mMultiple Airlines
Mon 28/721:50LHR - GLA
Nonstop1h 25mMultiple Airlines
Deal found 24/6£136
Mon 4/808:35GLA - LHR
1 stop4h 05mAer Lingus
Wed 6/814:20LHR - GLA
1 stop5h 20mAer Lingus
Deal found 24/6£207
Tue 19/806:15GLA - LHR
1 stop4h 30mKLM
Tue 26/819:15LHR - GLA
1 stop3h 55mKLM
Deal found 24/6£213

Cheapflights Fare Finder

Customise your flight search to find flights from Glasgow Intl to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 26 June 2025.
Use the filters below to find and compare flights from Glasgow Intl Airport to London Heathrow Airport that are best for you.

Fly from

Glasgow Intl

Fly to

Heathrow

Route

Depart

Return

Price

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Sun 27/7

07:35-09:10

Nonstop1h 35m

London Heathrow

Tue 29/7

22:00-23:25

Nonstop1h 25m

£77

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Thu 24/7

06:00-11:45

1 stop5h 45m

London Heathrow

Mon 28/7

21:50-23:15

Nonstop1h 25m

£136

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Tue 19/8

06:15-10:45

1 stop4h 30m

London Heathrow

Tue 26/8

19:15-23:10

1 stop3h 55m

£213

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Tue 19/8

19:15-20:35

Nonstop1h 20m

£41

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Mon 3/11

20:20-21:50

1 stop25h 30m

£62

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Mon 28/7

13:55-18:55

1 stop5h 00m

£95

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Thu 18/9

12:05-08:00

1 stop19h 55m

£169

Flights are sorted by cheapest return flights first.

Deals found on 25/6

Best time to book a flight from Glasgow Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Glasgow Intl 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 Glasgow Intl Airport to London Heathrow Airport

How far ahead should I book a flight from Glasgow Intl Airport to London Heathrow Airport?

Use this chart to determine the optimal time to book a return flight from Glasgow Intl to Heathrow. Price data was last updated on 20 June 2025.

To ensure you get the cheapest price possible for a flight from Glasgow Intl Airport to London Heathrow Airport, you should look to book at least 85 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Glasgow Intl Airport to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to London Heathrow Airport (average of £112). Flying from Glasgow Intl Airport to London Heathrow Airport in August is currently the most expensive (average of £164). 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 GLA to LHR?

Find hourly flight availability from Glasgow Intl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 June 2025.

A simple way to save on the total cost of your ticket is to fly from Glasgow Intl Airport to London Heathrow Airport in the evening. If you’re flexible enough to do this you can expect to save up to 33% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Glasgow Intl Airport to London Heathrow Airport?

Use this chart to determine the cheapest time to fly return from Glasgow Intl to Heathrow. Price data was last updated on 22 June 2025.

Travellers seeking maximum savings on their Glasgow Intl Airport to London Heathrow Airport flight should consider departing on Friday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 26 June 2025.
See what other customers who have flown with KLM, Aer Lingus, andBritish Airways from Glasgow Intl Airport to London Heathrow Airport have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,365 reviews
Check prices

Crew

8.4

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Food

7.2

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,365 reviews
KLM
7.8
Good
1,365 reviews
Check prices

Crew

8.4

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Food

7.2

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Aer Lingus
7.1
Good
1,131 reviews
KLM
7.8
Good
1,365 reviews
Check prices

Crew

8.4

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Food

7.2

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
British Airways
6.6
Okay
7,068 reviews
KLM
7.8
Good
1,365 reviews
Check prices

Crew

8.4

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Food

7.2

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Glasgow Intl to Heathrow. 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 Glasgow Intl Airport to London Heathrow Airport round-trip?

    Our cheapest airline available from Glasgow Intl Airport to London Heathrow Airport is British Airways. Our recent data shows that you can find tickets from as low as £77 on this airline. Additional options worth looking into are Aer Lingus and KLM, starting at £207 and £213 round-trip. Users have found that British Airways is 29% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Glasgow Intl Airport to London Heathrow Airport one-way?

    The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as £41. However, be on the lookout for offers from Aer Lingus and Loganair, as they are both options that can get you from Glasgow Intl Airport to London Heathrow Airport for a low price.

  • What are the most reliable airlines from Glasgow Intl Airport to London Heathrow Airport?

    The top 3 most reliable airlines when flying from Glasgow Intl Airport to London Heathrow Airport are Royal Air Maroc (91%), Iberia (89%) and American Airlines (89%).

  • What are the cheapest flights from Glasgow Intl Airport to London Heathrow Airport?

    On average you can expect to pay £1,288 for a flight from Glasgow Intl Airport to London Heathrow Airport. The cheapest flight overall is £47 while the most popular route, (Glasgow Intl - London Heathrow) is currently priced at £78.

  • Can I find deals for flights from Glasgow Intl to Heathrow that include hotel bookings?

    Yes. In addition to deals on Glasgow Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Glasgow Intl to Heathrow?

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

  • Can I find deals for business class flights from Glasgow Intl to Heathrow?

    Yes. Cheapflights offers flight deals from Glasgow Intl to Heathrow 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 Glasgow Intl Airport to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to London Heathrow Airport (average of £112). Flying from Glasgow Intl Airport to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near Glasgow Intl Airport?

Book flights to Glasgow Intl Airport if you plan to visit one of these locations
Croydon
Milton Keynes
Hounslow
Deal
Northampton
Gatwick
Slough
Luton
Wembley
Crawley
Eastbourne
Ilford
Watford
Southend-on-Sea
Folkestone
Ipswich
Winchester
Hayes
Maidstone
Swindon

Browse thousands of different options on Cheapflights for your next trip

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Fly from Glasgow Intl to Heathrow on these airlines

Choose from the following airlines for your flight from Glasgow Intl to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 26 June 2025.
British Airways flights from Glasgow Intl to London Heathrow
easyJet flights from Glasgow Intl to London Heathrow

Top 2 airlines flying from Glasgow Intl to Heathrow

Discover the top 2 airlines that operate flights from Glasgow Intl to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 26 June 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£49Average£77FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£67Average£111FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Glasgow Intl to Heathrow?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Glasgow Intl today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Glasgow Intl to Heathrow?

Cheapflights simply makes it quick and affordable to book flights from Glasgow Intl to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Glasgow Intl to Heathrow with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Glasgow Intl to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Glasgow Intl to Heathrow become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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