TYS - LHR

£301 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 23/2. 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, 0 bags

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
Travellers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
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, 3 Dec - Mon, 8 Dec
Delta Logo
06:29 - 07:05TYS-LHR
19h 36m1 stop
Delta Logo
06:30 - 18:52LHR-TYS
17h 22m2 stops
£452Delta
Find Deal
Fri, 28 Nov - Wed, 3 Dec
Multiple Airlines Logo
05:45 - 07:10TYS-LHR
20h 25m2 stops
Multiple Airlines Logo
08:45 - 19:29LHR-TYS
39h 44m2 stops
£462Multiple Airlines
Find Deal
Fri, 28 Nov - Wed, 3 Dec
United Airlines Logo
05:45 - 06:40TYS-LHR
19h 55m1 stop
United Airlines Logo
06:35 - 21:04LHR-TYS
19h 29m2 stops
£469United Airlines
Find Deal
Sun, 9 Nov - Tue, 25 Nov
United Airlines Logo
05:45 - 06:40TYS-LHR
19h 55m1 stop
United Airlines Logo
13:30 - 23:59LHR-TYS
15h 29m2 stops
£471United Airlines
Find Deal
Fri, 28 Nov - Wed, 3 Dec
KLM Logo
14:49 - 09:00TYS-LHR
13h 11m1 stop
KLM Logo
08:55 - 16:53LHR-TYS
12h 58m1 stop
£474KLM
Find Deal
Fri, 12 Dec - Mon, 15 Dec
United Airlines Logo
10:50 - 06:40TYS-LHR
14h 50m2 stops
United Airlines Logo
09:00 - 13:17LHR-TYS
33h 17m2 stops
£474United Airlines
Find Deal
Fri, 12 Dec - Mon, 15 Dec
KLM Logo
19:59 - 11:40TYS-LHR
10h 41m1 stop
KLM Logo
08:55 - 18:52LHR-TYS
14h 57m1 stop
£493KLM
Find Deal
Thu, 27 Nov - Thu, 4 Dec
American Airlines Logo
08:59 - 09:15TYS-LHR
19h 16m1 stop
American Airlines Logo
11:45 - 19:43LHR-TYS
12h 58m1 stop
£512American Airlines
Find Deal
Thu, 8 Jan - Wed, 14 Jan
British Airways Logo
07:44 - 06:35TYS-LHR
17h 51m1 stop
British Airways Logo
11:00 - 22:09LHR-TYS
16h 09m1 stop
£515British Airways
Find Deal
Mon, 26 Jan - Mon, 16 Feb
British Airways Logo
16:00 - 07:20TYS-LHR
10h 20m1 stop
British Airways Logo
14:45 - 22:00LHR-TYS
12h 15m1 stop
£518British Airways
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from £452 (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 50% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 26% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£452
Overall average: £941
Delta
Wed 3/12Mon 8/12
TYS - LHR • 1 stop
Cheapest one-way flight
£301
Overall average: £374
Lufthansa
Mon 23/2
TYS - LHR • 1 stop
Start a new search
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 £515 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is £1,003 and £941 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 50% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Find deals

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

Low seasonNovember
Cheapest flight£301
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (12% 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 £301 for a one-way ticket and £452 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?

    SkyTeam is the only airline alliance operating flights between Knoxville and London Heathrow Airport.

  • 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 1548 reviews
7.3Comfort
6.6Entertainment
6.6Food
8.0Crew
7.6Boarding
Airline reviews

No vegetarian option was provided for the regular meal or the pre-landing snack.

2.0 MediocreAnonymous, Oct 2025LAX - CPH
Read more Scandinavian Airlines reviews

No vegetarian option was provided for the regular meal or the pre-landing snack.

The Scandinavian flight was excellent, however the second flight was partnered with TAP Portugal which was not so good. crowded gate area with no chairs, delayed flight, bad boarding process, no entertainment system onboard, and the baggage didn’t get to the carousel until well over an hour which caused our taxi that was waiting to leave. Love SAS, hate TAP.

Great logistics and timeliness as we arrived quite early. Flight smooth and fast. Excellent entertainment. Plane itself was a bit tired and the crew mostly indifferent. Baggage took forever but that’s on CPH. Would use SAS again for sure.

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!

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

Information on your arrival and departure airports

Knoxville (TYS)
Heathrow (LHR)

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.