TYS - LHR

£247 Find Cheap Flights from Knoxville to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to Heathrow departing on 23/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to London, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Knoxville to Heathrow (TYS-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Knoxville to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Knoxville to Heathrow

Wed, 29 Oct - Wed, 5 Nov
Delta Logo
14:27 - 07:50TYS-LHR
13h 23m1 stop
Delta Logo
11:30 - 23:22LHR-TYS
16h 52m2 stops
£418Delta
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Mon, 13 Oct - Thu, 23 Oct
KLM Logo
20:10 - 13:30TYS-LHR
12h 20m1 stop
KLM Logo
15:15 - 23:46LHR-TYS
13h 31m1 stop
£424KLM
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Wed, 22 Oct - Fri, 31 Oct
Virgin Atlantic Logo
15:48 - 09:15TYS-LHR
12h 27m2 stops
Virgin Atlantic Logo
10:10 - 21:13LHR-TYS
15h 03m2 stops
£427Virgin Atlantic
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Sun, 8 Mar - Fri, 20 Mar
Delta Logo
10:05 - 09:00TYS-LHR
18h 55m1 stop
Delta Logo
08:55 - 23:44LHR-TYS
18h 49m1 stop
£430Delta
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Thu, 30 Oct - Thu, 6 Nov
Scandinavian Airlines Logo
15:48 - 16:00TYS-LHR
20h 12m2 stops
Scandinavian Airlines Logo
06:40 - 23:46LHR-TYS
22h 06m2 stops
£440Scandinavian Airlines
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Thu, 30 Oct - Thu, 6 Nov
Scandinavian Airlines Logo
15:48 - 17:40TYS-LHR
21h 52m2 stops
Scandinavian Airlines Logo
07:05 - 23:46LHR-TYS
21h 41m3 stops
£443Scandinavian Airlines
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Wed, 29 Oct - Wed, 5 Nov
Logo
05:45 - 11:20TYS-LHR
25h 35m2 stops
Logo
07:40 - 23:59LHR-TYS
21h 19m2 stops
£500
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Sun, 1 Mar - Fri, 13 Mar
United Airlines Logo
07:00 - 10:15TYS-LHR
22h 15m1 stop
United Airlines Logo
18:00 - 18:42LHR-TYS
28h 42m2 stops
£500United Airlines
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Mon, 13 Oct - Thu, 23 Oct
United Airlines Logo
19:26 - 09:35TYS-LHR
33h 09m2 stops
United Airlines Logo
15:50 - 14:45LHR-TYS
27h 55m2 stops
£504United Airlines
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Sun, 1 Mar - Fri, 13 Mar
Logo
18:16 - 09:15TYS-LHR
9h 59m1 stop
Logo
11:00 - 21:14LHR-TYS
14h 14m1 stop
£512
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from £418 (return)
Scandinavian Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 27% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£418
Overall average: £559
Delta
Wed 29/10Wed 5/11
TYS - LHR • 1 stop
Cheapest one-way flight
£247
Typical prices: £385-391
Multi-carrier
Tue 23/9
TYS - LHR • 2 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Booking Insights

KAYAK's insights & trends for Knoxville to Heathrow flights

Get data-powered insights and trends into flights from Knoxville to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Knoxville to London Heathrow Airport?

The average price of all round-trip flights from Knoxville to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Knoxville to London Heathrow Airport, look for departures on Wednesdays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from London Heathrow Airport, Monday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Knoxville to London Heathrow Airport is February, where tickets cost £499 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is £988 and £929 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Knoxville to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Knoxville to London Heathrow Airport, you should book around 2 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

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Good to know - Cheap tickets from Knoxville to London Heathrow Airport

Low seasonJanuary
Cheapest flight£247
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly (6% more expensive on average)
Flight from Knoxville to London Heathrow Airport

When to book flights from Knoxville to Heathrow

Are your dates flexible? Find out the best times to travel from Knoxville to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Knoxville to London Heathrow Airport flights

  • What is the cheapest flight from Knoxville to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Knoxville to London Heathrow Airport was £335 for a one-way ticket and £568 for a return.

  • Which airports will I be using when flying from Knoxville to London Heathrow Airport?

    Knoxville and London Heathrow Airport are both served by 1 main airport. You will leave Knoxville from Knoxville McGhee Tyson and will be arriving at London Heathrow.

  • Which aircraft models fly most regularly from Knoxville to London Heathrow Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Knoxville to London Heathrow Airport?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Knoxville and London Heathrow Airport, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Knoxville to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Knoxville to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Knoxville to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Knoxville is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Knoxville to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to Knoxville with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Knoxville to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Knoxville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Knoxville to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Knoxville to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Scandinavian AirlinesOverall score based on 1484 reviews
6.7Entertainment
7.3Comfort
8.0Crew
7.7Boarding
6.7Food
Airline reviews

Will not recommend SAS for business travel. Food was so-so. Service was very good. First leg was very good. Second leg from Copenhagen to Barcelona was terrible. We paid a LOT for business class and to have seats worse than most coach seats with no entertainment and no charging available for 1/3rd of the whole trip was not acceptable. Very disappointing. I thought they were coming back in the U.S. with style, NOT YET.

6.0 GoodArt, Aug 2025SEA - CPH
Read more Scandinavian Airlines reviews

Will not recommend SAS for business travel. Food was so-so. Service was very good. First leg was very good. Second leg from Copenhagen to Barcelona was terrible. We paid a LOT for business class and to have seats worse than most coach seats with no entertainment and no charging available for 1/3rd of the whole trip was not acceptable. Very disappointing. I thought they were coming back in the U.S. with style, NOT YET.

I do not have a problem with the airline but both my two suitcases that were supposed to go from Hawaii to Copenhagen didn’t get on the plane in Seattle. I arrive on Monday the 21st at 10:30 in the morning. I did not get my two suitcases before Friday late afternoon that is unacceptable.

No choice of food. Needed to pay more even for a can of coke!!!

The seats were really close together and hard to get comfortable. The food was okay. The cheese was amazing! I loved the cold towels they gave us.

When my flight was changed from delays they were quick to rebook me.

I really enjoyed how clean and big the aircraft was, as well as how friendly the crew was.

Airline left me stranded in the U.S. gave me an unrequested refund of 40% of booking and canceled my trip back! When I asked why, the said “we don’t have to tell you why”. “But you can rebook”. Never again! Paid 2x and rebooked on Austrian. What a joke!

Painful seats for a 10 hour flight. There’s a very hard flat board in the seat that goes up to half the back and after 7 hours it gets impossible to find the right position to avoid the pain.

I paid for the seat with more leg room but on the day of my departure my seat was changed. I brought it to the airline costumer service and he was able to change it back. The person sitting next to me had the same exact issue.

Food could have been better. My pasta was microwaved into a solid block. Inedible.

Everything you need to know for your flight from Knoxville to Heathrow

Information on your arrival and departure airports

Knoxville (TYS)
Heathrow (LHR)

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