LHR - TYS

£372 Find Cheap Flights from London Heathrow Airport to Knoxville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Knoxville departing on 27/5. 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 Knoxville

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

Cheapest return fare
£589
Overall average: £610
British Airways
Mon 13/4Mon 27/4
LHR - TYS • 1 stop
Cheapest one-way flight
£372
Multiple Airlines
Wed 27/5
LHR - TYS • 3 stops
Top airlines
British Airways
Cheapest • from £589 (return)
Finnair
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Heathrow and Knoxville. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Chicago (ORD)
Cheapest • Avg £683 (return)
Charlotte (CLT)
Shortest trip • 12h 17m (one-way)
Insights
Insights
Insights
Insights
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 28% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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 Knoxville!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Heathrow to Knoxville (LHR-TYS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Knoxville 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 Heathrow to Knoxville

Mon, 13 Apr - Mon, 27 Apr
British Airways Logo
12:15 - 20:18
LHR
-
TYS
13h 03m
1 stop
British Airways Logo
17:06 - 10:30
TYS
-
LHR
12h 24m
1 stop
£589British Airways
Tue, 14 Apr - Tue, 21 Apr
United Airlines Logo
10:50 - 22:43
LHR
-
TYS
16h 53m
2 stops
United Airlines Logo
10:49 - 07:15
TYS
-
LHR
15h 26m
2 stops
£596United Airlines
Mon, 13 Apr - Mon, 27 Apr
United Airlines Logo
10:50 - 22:29
LHR
-
TYS
16h 39m
2 stops
United Airlines Logo
13:52 - 10:40
TYS
-
LHR
15h 48m
2 stops
£596United Airlines
Tue, 14 Apr - Tue, 21 Apr
British Airways Logo
12:00 - 21:26
LHR
-
TYS
14h 26m
1 stop
British Airways Logo
14:49 - 10:20
TYS
-
LHR
14h 31m
1 stop
£609British Airways
Sun, 12 Apr - Sun, 19 Apr
Lufthansa Logo
19:10 - 22:34
LHR
-
TYS
32h 24m
2 stops
Lufthansa Logo
19:20 - 06:55
TYS
-
LHR
30h 35m
1 stop
£639Lufthansa
Sun, 12 Apr - Sun, 19 Apr
Lufthansa Logo
11:05 - 22:34
LHR
-
TYS
16h 29m
1 stop
Lufthansa Logo
19:20 - 06:55
TYS
-
LHR
30h 35m
1 stop
£646Lufthansa
Sun, 12 Apr - Sun, 19 Apr
Virgin Atlantic Logo
12:25 - 23:03
LHR
-
TYS
15h 38m
1 stop
Virgin Atlantic Logo
19:00 - 07:15
TYS
-
LHR
31h 15m
1 stop
£649Virgin Atlantic
Thu, 19 Mar - Mon, 23 Mar
Delta Logo
08:40 - 21:06
LHR
-
TYS
16h 26m
2 stops
Delta Logo
10:04 - 06:25
TYS
-
LHR
16h 21m
1 stop
£657Delta
Thu, 19 Mar - Mon, 23 Mar
Delta Logo
06:30 - 19:27
LHR
-
TYS
16h 57m
2 stops
Delta Logo
11:18 - 08:45
TYS
-
LHR
17h 27m
1 stop
£657Delta
Thu, 19 Mar - Mon, 23 Mar
Delta Logo
06:30 - 17:45
LHR
-
TYS
15h 15m
2 stops
Delta Logo
10:04 - 11:40
TYS
-
LHR
21h 36m
1 stop
£659Delta
Booking Insights

KAYAK’s insights & trends for Heathrow to Knoxville flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Knoxville, 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 London Heathrow Airport to Knoxville is September, where tickets cost £520 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is £1,031 and £879 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Knoxville, 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 London Heathrow Airport to Knoxville, you should book around 2 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

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

Low seasonJanuary
Cheapest flight£372
Best time to beat the crowds but there is an average 21% increase in price.
Most popular time to fly and prices are also 29% lower on average.
Flight from London Heathrow Airport to Knoxville

When to book flights from Heathrow to Knoxville

Are your dates flexible? Find out the best times to travel from Heathrow to Knoxville 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 London Heathrow Airport to Knoxville flights

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

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Knoxville was £372 for a one-way ticket and £589 for a return.

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

    London Heathrow Airport airport is called London Heathrow and the only airport in Knoxville is Knoxville McGhee Tyson.

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

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

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

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

  • Which is the best airline for flights from London to Knoxville, Finnair or Virgin Atlantic?

    The two airlines most popular with KAYAK users for flights from London to Knoxville are Finnair and Virgin Atlantic. With an average price for the route of £611 and an overall rating of 7.6, Finnair is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of £670 and an overall rating of 7.5.

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

    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 London Heathrow Airport to Knoxville.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Knoxville from London Heathrow Airport 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 London Heathrow Airport to Knoxville?

    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 Knoxville with an airline and back to London Heathrow Airport with another airline.

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

    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 Knoxville from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines flying from Heathrow to Knoxville

 
See real verified KAYAK customer reviews for airlines flying from London to Knoxville. 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 Heathrow to Knoxville? 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.
7.6
FinnairOverall score based on 1369 reviews
6.9Entertainment
6.7Food
7.4Comfort
7.7Boarding
8.2Crew
Airline reviews

Positive: It was refreshingly easy and polite check-in and boarding staff. Flight was on time and Helsinki is a very well-signposted airport. Shopping was nice as well. Flight was not full and I had lots of space in economy. Flight was perfectly on time. Negative: Food and drink not very good, but that it is normal on any airline. Didn't expect anything else.

8.0 ExcellentFiruz, Feb 2026
HEL - ICN
Read more Finnair reviews

Positive: It was refreshingly easy and polite check-in and boarding staff. Flight was on time and Helsinki is a very well-signposted airport. Shopping was nice as well. Flight was not full and I had lots of space in economy. Flight was perfectly on time. Negative: Food and drink not very good, but that it is normal on any airline. Didn't expect anything else.

Very good seat, very comfortable, good food, and good service.

It was a good flight, very comfortable seats for sleeping in business class. Probably the most comfortable business class seat I've ever had (20+ times in business class on various airlines). Service was good, but the only downside is my screen didn't work and it had to be reset multiple times to get it to shut off. I had to block my eyes because the screen was white almost the entire flight and I wore an eye mask when I slept. But when eating and reading in my seat, my eyes hurt because the only way to turn the screen off was reset it and the screen would only be off for a few minutes at a time.

All reviews good because...flight from BWI to London ,economy seats was miserable. I usually book 1,step up from economy but this would have added 1500 bucks 1 way. Bit the bullet and upgraded for retun flight, otherwise all ratings would have been rock bottom.

Great. It was awesome to have boarding from the front and back of the plane as it made the process go very quickly

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

We had an excellent trip with Finnair. This was our first time and we’re very pleased. The only issue was with the boarding - it was a little bit confusing and needs a little bit of streamlining.

Flight delayed over an hour. They said they would hold our connection but then did not.

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

There was no WiFi available, there were mechanical problems with the plane and we landed at C 124, then the gate was switched to A 26, then all the way back to C126! For a 75 yo woman traveling alone, this was a difficult journey, indeed!

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Poor. Crew allowed children to run around and scream and disturb passanger’s seats.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

Crew was tired as we all were. Pretty abrupt. Flight was delayed. Not as enjoyable as the other 3 legs we flew.

Flight attendants were friendly & good service, food sucks, seats uncomfortable, not many Asian movies or shows flying from Hong Kong

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

It was good. The seats in economy weren’t bad

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Excellent service; they helped me reschedule so I can fly in an earlier flight

Wonderful staff. The boarding process can be improved a little better by adequate prior communication but all in all they did fine. However the boarding gate was quite unfreindly to elderly and who needs help with sevral stairs.

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Very good. Comfortable and I felt well taken care of from start to finish

Bulkhead seats should not be an extra charge. They are extremely uncomfortable. And we missed our connecting flight due to slow luggage retreaval.

Not great - seats were very narrow and food was terrible.

Some of the crew was sassy and not super helpful. The food was okay, but it seems like they were all unprepared compared to my flight I did from JFK to Frankfurt

Late takeoff, but on time landing. Lost bags, 3 days to find them, still in transit to my location. Power outlets broken, Wi-Fi not working, so much for working on the long flight.

Good. For a long flight. The comfort of the seat could be better. Also, the food was « normal » plane food. Not indian plane food unfortunately! Everything else was smooth and great.

The seats were comfortable. So many empty seats allowed for stretching out and sleeping. The onboard entertainment was pretty good. The cabin crew were so kind and kept the passengers well- hydrated, and well fed.

We had American Airlines on our return and it was confusing if we were going with Aa or BA I had 2 different flight numbers and didn’t get our gate until it was boarding. So we were a bit nervous as the which it was

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Entertainment devices on A380 need to be fixed, the seats might do with updates.

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

Information on your arrival and departure airports