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Cheap flights from Knoxville to London from $299

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to London departing on 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Knoxville to London (TYS-LON)

Cheap round-trip flights

Delta Logo
6:14 pm - 1:30 pmTYS-LHR
14h 16m1 stop
Delta Logo
11:30 am - 11:55 pmLHR-TYS
17h 25m2 stops
$564Delta
Find Deal
Tue, Aug 26 - Tue, Sep 9
Delta Logo
11:58 am - 7:15 amTYS-LHR
14h 17m1 stop
Delta Logo
6:30 am - 8:06 pmLHR-TYS
18h 36m2 stops
$565Delta
Find Deal
Wed, Aug 20 - Tue, Aug 26
Delta Logo
6:03 pm - 1:10 pmTYS-LHR
14h 07m1 stop
Delta Logo
6:30 am - 5:19 pmLHR-TYS
15h 49m2 stops
$566Delta
Find Deal
Wed, Aug 20 - Tue, Aug 26
United Airlines Logo
7:25 pm - 10:40 amTYS-LHR
10h 15m1 stop
United Airlines Logo
7:25 am - 8:56 pmLHR-TYS
18h 31m2 stops
$625United Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 9
Virgin Atlantic Logo
12:01 pm - 6:45 amTYS-LHR
13h 44m2 stops
Virgin Atlantic Logo
11:20 am - 9:26 pmLHR-TYS
15h 06m1 stop
$627Virgin Atlantic
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Fri, Sep 19 - Fri, Sep 26
United Airlines Logo
9:55 am - 8:35 amTYS-LHR
17h 40m2 stops
United Airlines Logo
8:40 am - 10:28 amLHR-TYS
30h 48m2 stops
$630United Airlines
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Wed, Aug 27 - Thu, Sep 4
British Airways Logo
5:52 pm - 11:35 amTYS-LHR
12h 43m1 stop
British Airways Logo
7:15 pm - 8:40 pmLHR-TYS
30h 25m2 stops
$678British Airways
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Wed, Nov 26 - Tue, Dec 2
American Airlines Logo
4:49 pm - 9:10 amTYS-LHR
11h 21m1 stop
American Airlines Logo
9:15 am - 3:53 pmLHR-TYS
11h 38m1 stop
$691American Airlines
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Wed, Oct 1 - Fri, Oct 10
British Airways Logo
3:56 pm - 11:05 amTYS-LHR
14h 09m1 stop
British Airways Logo
1:30 pm - 5:48 pmLHR-TYS
33h 18m1 stop
$696British Airways
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Wed, Oct 1 - Thu, Oct 9
American Airlines Logo
8:23 am - 8:10 amTYS-LGW
18h 47m2 stops
American Airlines Logo
10:40 am - 11:50 pmLGW-TYS
18h 10m2 stops
$724American Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 24

American Airlines flights from Knoxville to London

Our best American Airlines deals on Knoxville to London flight tickets
American Airlines
Oct 1
TYS4:49 pmKnoxville McGhee Tyson
11h 21m
1 stop
LHR9:10 amLondon Heathrow
Oct 10
LHR9:15 amLondon Heathrow
11h 38m
1 stop
TYS3:53 pmKnoxville McGhee Tyson
$691
Find similar
American Airlines
Sep 17
TYS8:23 amKnoxville McGhee Tyson
18h 47m
2 stops
LGW8:10 amLondon Gatwick
Sep 24
LGW10:40 amLondon Gatwick
18h 10m
2 stops
TYS11:50 pmKnoxville McGhee Tyson
$724
Find similar
American Airlines
Aug 18
TYS12:56 pmKnoxville McGhee Tyson
12h 54m
1 stop
LHR6:50 amLondon Heathrow
Aug 25
LHR11:00 amLondon Heathrow
12h 54m
1 stop
TYS6:54 pmKnoxville McGhee Tyson
$5,415
Find similar

Delta flights from Knoxville to London

Our best Delta deals on Knoxville to London flight tickets
Delta
Aug 26
TYS6:14 pmKnoxville McGhee Tyson
14h 16m
1 stop
LHR1:30 pmLondon Heathrow
Sep 9
LHR11:30 amLondon Heathrow
17h 25m
2 stops
TYS11:55 pmKnoxville McGhee Tyson
$564
Find similar
Delta
Aug 20
TYS11:58 amKnoxville McGhee Tyson
14h 17m
1 stop
LHR7:15 amLondon Heathrow
Aug 26
LHR6:30 amLondon Heathrow
18h 36m
2 stops
TYS8:06 pmKnoxville McGhee Tyson
$565
Find similar
Delta
Aug 20
TYS6:03 pmKnoxville McGhee Tyson
14h 07m
1 stop
LHR1:10 pmLondon Heathrow
Aug 26
LHR6:30 amLondon Heathrow
15h 49m
2 stops
TYS5:19 pmKnoxville McGhee Tyson
$566
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 5, 2025.
Use the filters below to find and compare flights from Knoxville to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Tue 8/26

6:14 pm-1:30 pm

1 stop14h 16m

London Heathrow

Tue 9/9

11:30 am-11:55 pm

2 stops17h 25m

$564

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 8/20

11:58 am-7:15 am

1 stop14h 17m

London Heathrow

Tue 8/26

6:30 am-8:06 pm

2 stops18h 36m

$565

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 8/20

6:03 pm-1:10 pm

1 stop14h 07m

London Heathrow

Tue 8/26

6:30 am-5:19 pm

2 stops15h 49m

$566

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Tue 8/26

7:25 pm-10:40 am

1 stop10h 15m

London Heathrow

Tue 9/9

7:25 am-8:56 pm

2 stops18h 31m

$625

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Fri 9/19

12:01 pm-6:45 am

2 stops13h 44m

London Heathrow

Fri 9/26

11:20 am-9:26 pm

1 stop15h 06m

$627

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 8/27

9:55 am-8:35 am

2 stops17h 40m

London Heathrow

Thu 9/4

8:40 am-10:28 am

2 stops30h 48m

$630

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 11/26

5:52 pm-11:35 am

1 stop12h 43m

London Heathrow

Tue 12/2

7:15 pm-8:40 pm

2 stops30h 25m

$678

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 10/1

4:49 pm-9:10 am

1 stop11h 21m

London Heathrow

Fri 10/10

9:15 am-3:53 pm

1 stop11h 38m

$691

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 10/1

3:56 pm-11:05 am

1 stop14h 09m

London Heathrow

Thu 10/9

1:30 pm-5:48 pm

1 stop33h 18m

$696

KnoxvilleLondon

TYS - LGW

TYSLGW

Knoxville McGhee Tyson

Wed 9/17

8:23 am-8:10 am

2 stops18h 47m

London Gatwick

Wed 9/24

10:40 am-11:50 pm

2 stops18h 10m

$724

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Knoxville to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London?

The cheapest month to fly to London from Knoxville is in November. Flight prices, which tend to average around $782, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Knoxville averaging around $787.

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from Knoxville to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $820. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,166. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

What is the cheapest time of day to depart on your flight to London?

Flying to London from Knoxville in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $882 when looking at flights departing in the afternoon. Flights to London are more costly at noon, with an average ticket price of $1,015. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $912 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Knoxville for as low as $731 on momondo.

Can stopping save me money on Knoxville to London flights?

You could potentially save up to 4% on your flight if you consider stops on a Knoxville to London flight.

When to book flights from Knoxville to London

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to London according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Knoxville to London (TYS to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to London

Best Price Found

$299

Fastest flight time

9h 56m

Direct flights

None

Airports in London

3 airports
The best one-way flight to London from Knoxville in the past 72 hours is $299. The best round-trip flight deal from Knoxville to London found on momondo in the last 72 hours is $564.
The fastest flight from Knoxville to London takes 9h 56m
There are no direct flights from Knoxville to London. Popular non-direct routes for this connection are Knoxville McGhee Tyson Airport - London Gatwick Airport, Knoxville McGhee Tyson Airport - London Heathrow Airport and Knoxville McGhee Tyson Airport - London City Airport.
There are 3 airports near London: London City (LCY), London Heathrow (LHR), London Gatwick (LGW)
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  • How far is Knoxville McGhee Tyson to London by plane?

    A flight from Knoxville McGhee Tyson to London will travel around 4078.3 mi. In terms of flight time, this usually takes a little over 9h 56m.

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to London?

    Prices for flights from Knoxville McGhee Tyson Airport to London are updated daily.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to London?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to London?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to London.

  • What documentation or ID do you need to fly to London?

    The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Knoxville to London?

Best airlines flying from Knoxville to London

Compare and see reviews for airlines that fly from Knoxville to London with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom $577Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $661Free CancellationRating
6.6
7,237 reviews
Search British Airways flights
American AirlinesPriceFrom $661Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $676Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
DeltaPriceFrom $688Free CancellationRating
8.0
7,985 reviews
Search Delta flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Dover
Slough
Luton
Guildford
Milton Keynes
Dartford
Crawley
Hayes
Chelmsford
Stansted
Ilford
Brentwood
Colchester
Folkestone
Watford
Canterbury
Richmond
Wembley

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to London?

Finding the right flight to London from Knoxville is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

Can I find flights from Knoxville to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Knoxville to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Knoxville to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Knoxville.

I’m not ready to book a flight from Knoxville to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Knoxville and alert you when they change.

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport