Question 1

What are the cheapest airlines flying from Knoxville to London Heathrow Airport round-trip?

Accepted Answer

United Airlines, at £501, was found to be the cheapest airline from Knoxville to London Heathrow Airport.Alternate airlines flying return to your destination include British Airways and KLM. You may be able to fly from Knoxville to London Heathrow Airport for 26% less than the average price by searching for these airlines.

Question 2

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

Accepted Answer

The price you pay for your flight from Knoxville to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 58 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 3

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Knoxville to London Heathrow Airport (average of £112). Flying from Knoxville 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.

Question 4

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

Accepted Answer

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

Question 5

E

Accepted Answer

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Question 6

E

Accepted Answer

If weather is an important factor for your trip to London Heathrow 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Question 7

What is the cheapest day to fly round-trip from Knoxville to London Heathrow Airport?

Accepted Answer

Wednesday flights are found to be more expensive to fly from Knoxville to London Heathrow Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London Heathrow Airport.

Question 8

How far in advance should I book a flight from Knoxville to London Heathrow Airport?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 55 days in advance, which can save you up to 69% on flights from Knoxville to London Heathrow Airport compared to booking the week you need them. Waiting 55 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £486. For sooner than that we have options available in the next 3 days from £1,271.

Question 9

What is the cheapest month to fly from Knoxville to London Heathrow Airport?

Accepted Answer

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, September can be a great choice for travel to London Heathrow Airport. Flights to London Heathrow Airport from Knoxville in September are about £704 on average during September, but can be found for as low as £481.

Question 10

What is the cheapest time of day to fly from TYS to LHR?

Accepted Answer

When flying from Knoxville to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 38% versus a flight in the morning.

Question 11

What airport do you fly from for flights from Knoxville to London Heathrow?

Accepted Answer

If you book a flight to London Heathrow from Knoxville, you will be flying from McGhee Tyson, which is the city’s only airport. Knoxville McGhee Tyson (TYS) is located 11.3 mi from the center of Knoxville. There are 0 flights from McGhee Tyson to London Heathrow per day from 2 different airlines.

Question 12

Can I find deals for flights from Knoxville to Heathrow that include hotel bookings?

Accepted Answer

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

Question 13

How can I find direct flights from Knoxville to Heathrow?

Accepted Answer

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

Question 14

Can I find deals for business class flights from Knoxville to Heathrow?

Accepted Answer

Yes. Cheapflights offers flight deals from Knoxville 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.

Question 15

How does Cheapflights help users find flights from Knoxville to Heathrow?

Accepted Answer

Deals for Knoxville to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

Of course! You can now track prices for flights from Knoxville to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

Round-trip from	£489
One-way from	£192
Popular in	June
Cheapest in	February
Average price	£969

Airline	Cheapest	Average	Flexibility	On-time
Scandinavian Airlines	Cheapest£505	Average£505	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
British Airways	Cheapest£518	Average£658	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Cheap flights from Knoxville to London Heathrow Airport from £192

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 19/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Knoxville McGhee Tyson to London Heathrow are usually found in February or September, booked 59 days in advance, depart on a Tuesday or Monday and return on a Monday

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Cheapest flights from Knoxville to HeathrowExplore the most affordable flight options available from Knoxville to Heathrow. 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 Knoxville to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 June 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Knoxville to London Heathrow Airport that are best for you.

Best time to book a flight from Knoxville to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Knoxville with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Knoxville to London Heathrow Airport

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

Use this chart to determine the optimal time to book a return flight from Knoxville to Heathrow. Price data was last updated on 13 June 2025.

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

What is the cheapest time of day to fly from TYS to LHR?

Find hourly flight availability from Knoxville 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 19 June 2025.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

Reviews of airlines servicing Heathrow

Read through reviews of airlines operating flights from Knoxville to London, such as Delta, KLM and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Knoxville to London Heathrow?

What are the cheapest airlines flying from Knoxville to London Heathrow Airport round-trip?

Can I find deals for flights from Knoxville to Heathrow that include hotel bookings?

How can I find direct flights from Knoxville to Heathrow?

Can I find deals for business class flights from Knoxville to Heathrow?

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

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Alternative routes for Knoxville to Heathrow

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Top 2 airlines flying from Knoxville to Heathrow

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How does Cheapflights help users find flights from Knoxville to Heathrow?

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

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

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

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