TYS - LHR

£256 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 6/8. 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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Flights 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

Tue, 26 Aug - Tue, 9 Sep
KLM Logo
18:14 - 11:10TYS-LHR
11h 56m1 stop
KLM Logo
13:05 - 20:06LHR-TYS
12h 01m1 stop
£425KLM
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Tue, 26 Aug - Tue, 9 Sep
KLM Logo
13:53 - 06:45TYS-LHR
11h 52m1 stop
KLM Logo
13:05 - 20:06LHR-TYS
12h 01m1 stop
£426KLM
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Wed, 20 Aug - Tue, 26 Aug
Delta Logo
16:19 - 13:30TYS-LHR
16h 11m1 stop
Delta Logo
06:15 - 20:06LHR-TYS
18h 51m2 stops
£427Delta
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Wed, 20 Aug - Tue, 26 Aug
Delta Logo
12:25 - 08:55TYS-LHR
15h 30m1 stop
Delta Logo
06:15 - 20:06LHR-TYS
18h 51m2 stops
£428Delta
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Tue, 18 Nov - Tue, 25 Nov
Delta Logo
14:30 - 06:25TYS-LHR
10h 55m1 stop
Delta Logo
06:20 - 17:17LHR-TYS
15h 57m2 stops
£428Delta
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Tue, 18 Nov - Thu, 27 Nov
Delta Logo
14:30 - 06:25TYS-LHR
10h 55m1 stop
Delta Logo
06:30 - 18:53LHR-TYS
17h 23m2 stops
£429Delta
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Tue, 18 Nov - Thu, 27 Nov
Air Canada Logo
05:45 - 07:10TYS-LHR
20h 25m2 stops
Air Canada Logo
13:25 - 14:43LHR-TYS
30h 18m2 stops
£474Air Canada
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Mon, 22 Sep - Fri, 3 Oct
Scandinavian Airlines Logo
16:25 - 18:30TYS-LHR
21h 05m2 stops
Scandinavian Airlines Logo
06:40 - 23:44LHR-TYS
22h 04m3 stops
£540Scandinavian Airlines
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Tue, 18 Nov - Fri, 28 Nov
Air Canada Logo
09:50 - 07:10TYS-LHR
16h 20m2 stops
Air Canada Logo
13:25 - 23:59LHR-TYS
39h 34m2 stops
£543Air Canada
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Thu, 18 Sep - Thu, 2 Oct
British Airways Logo
18:10 - 08:05TYS-LHR
32h 55m1 stop
British Airways Logo
06:10 - 17:43LHR-TYS
40h 33m2 stops
£561British Airways
Find Deal
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.

How much is a round-trip flight from Knoxville to London Heathrow Airport?

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 £512 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is £1,032 and £864 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 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.


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

Low seasonJanuary
Cheapest flight£256
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly (1% 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 £339 for a one-way ticket and £563 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.

  • Which is the best airline for flights from Knoxville to London, Scandinavian Airlines or British Airways?

    The two airlines most popular with KAYAK users for flights from Knoxville to London are Scandinavian Airlines and British Airways. With an average price for the route of £513 and an overall rating of 7.3, Scandinavian Airlines is the most popular choice. British Airways is also a great choice for the route, with an average price of £713 and an overall rating of 6.6.

  • 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 airlines 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.
7.3
Scandinavian AirlinesOverall score based on 1457 reviews
7.3Comfort
7.6Boarding
8.0Crew
6.6Entertainment
6.6Food
Airline reviews

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

6.0 GoodAnonymous, Jul 2025ATL - CPH
Read more Scandinavian Airlines reviews

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.

SAS is very good at service, the lounge was great, and flights were on time. Boarding is fast and efficient!

Great experience. Typically do klm to Amsterdam but may start taking this flight in future - greatxexperience.

Flight was delayed. Though I checked in with BA live chat three times, our special meals were not provided.

My experience with British Airways is excellent, thanks for all 🫶🏻✈️

The crew is very friendly and helpful. The food is good for airplane food. The flight is long and hard to sleep. The leg space is great. The plane arrived in plenty of time.

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

Captain sick. Unable to get replacement so delayed me 30 hours, many others delayed 54 hours. TOTALLY DESTROYED ALL MY PLANS, including lost my rental car which would now cost over 5 times what I paid so stuck with buses n trains... lost hotel reservations.... HORRIBLE!!!

They’ve lost my bag and I have no way of really getting in touch with anyone and have received no updates.

Very crowded, no real explanation of food "chicken or pasta?" After dinner no drinks service. Plane was clean, but little help with finding soaces fir luggage to get into overhead bins. Many passengers putting 2 bags, hats, duty free in overhead bins so no space for roll ons

Flight was good but seat in 12D was not comfortable, better on the Airbus 321 from Tampa to Charlotte. No breakfast was served before landing in zLonfon only a coffee and orange juice.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

The entertainment selection was ok, but overall not bad! The crew was great.

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

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