LHR - TYS

$530 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 3/17. 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$776
Overall average: $753
Lufthansa
Mon 3/16Mon 3/23
LHR - TYS • 2 stops
Cheapest one-way
$530
Multiple Airlines
Tue 3/17
LHR - TYS • 2 stops
Top airlines
Lufthansa
Cheapest • from $776 (round-trip)
British Airways
Best reviews • 6.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 35% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 28% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s 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 round-trip 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 round-trip flight deals from Heathrow to Knoxville

Mon, Mar 16 - Mon, Mar 23
Lufthansa Logo
8:15 pm - 8:47 pm
LHR
-
TYS
28h 32m
2 stops
Lufthansa Logo
7:25 pm - 10:50 am
TYS
-
LHR
11h 25m
1 stop
$776Lufthansa
Mon, Mar 16 - Mon, Mar 23
Lufthansa Logo
1:30 pm - 10:19 am
LHR
-
TYS
24h 49m
2 stops
Lufthansa Logo
7:00 am - 9:10 am
TYS
-
LHR
22h 10m
2 stops
$788Lufthansa
Tue, Mar 10 - Tue, Mar 17
Multiple Airlines Logo
6:50 am - 7:29 pm
LHR
-
TYS
16h 39m
2 stops
Multiple Airlines Logo
5:43 pm - 11:15 am
TYS
-
LHR
13h 32m
1 stop
$789Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Multiple Airlines Logo
6:50 am - 7:29 pm
LHR
-
TYS
16h 39m
2 stops
Multiple Airlines Logo
5:43 pm - 3:50 pm
TYS
-
LHR
18h 07m
2 stops
$794Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
British Airways Logo
2:45 pm - 10:48 pm
LHR
-
TYS
12h 03m
1 stop
British Airways Logo
5:47 pm - 12:00 pm
TYS
-
LHR
14h 13m
1 stop
$803British Airways
Mon, Mar 16 - Mon, Mar 23
Virgin Atlantic Logo
10:45 am - 11:57 pm
LHR
-
TYS
17h 12m
1 stop
Virgin Atlantic Logo
12:03 pm - 6:25 am
TYS
-
LHR
14h 22m
1 stop
$812Virgin Atlantic
Wed, Mar 25 - Mon, Mar 30
Multiple Airlines Logo
6:30 am - 8:47 pm
LHR
-
TYS
18h 17m
2 stops
Multiple Airlines Logo
5:48 pm - 2:20 pm
TYS
-
LHR
15h 32m
2 stops
$819Multiple Airlines
Thu, Mar 19 - Mon, Mar 23
United Airlines Logo
7:30 am - 7:29 pm
LHR
-
TYS
15h 59m
2 stops
United Airlines Logo
9:40 am - 5:55 am
TYS
-
LHR
16h 15m
2 stops
$838United Airlines
Thu, Mar 19 - Mon, Mar 23
United Airlines Logo
1:30 pm - 10:49 am
LHR
-
TYS
25h 19m
2 stops
United Airlines Logo
10:55 am - 5:55 am
TYS
-
LHR
15h 00m
1 stop
$839United Airlines
Thu, Mar 19 - Mon, Mar 23
United Airlines Logo
6:30 am - 7:29 pm
LHR
-
TYS
16h 59m
2 stops
United Airlines Logo
10:55 am - 5:55 am
TYS
-
LHR
15h 00m
1 stop
$840United Airlines
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 $697 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $1,390 and $1,185 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 3 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$530
Best time to beat the crowds but there is an average 22% increase in price.
Most popular time to fly and prices are also 22% 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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 $530 for a one-way ticket and $776 for a round-trip.

  • Do I need a passport to fly between London Heathrow Airport and Knoxville?

    Yes

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

    On your way to Knoxville, you’ll fly out from London Heathrow. You’ll be landing at 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?

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

  • 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 travelers 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 round-trip ticket. You could then fly to Knoxville with an airline and back to London Heathrow Airport with another airline. Booking your flights between London Heathrow Airport and TYS can sometimes prove cheaper using this method.

  • 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 airline 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.
6.7
British AirwaysOverall score based on 7736 reviews
7.6Crew
6.8Comfort
6.4Entertainment
6.9Boarding
6.4Food
Airline reviews

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.

10.0 ExcellentAnonymous, Feb 2026
LHR - PIT
Read more British Airways reviews

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. Employees offered to help me because I had to use a cane.

Check-in and boarding were great. On flight staff were rude and disrespectful. Paid for extra room and found it incredibly cramped. Bathrooms kept in poor condition. Overall negative experience.

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

Information on your arrival and departure airports

London Heathrow Airport (LHR)
Knoxville (TYS)