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Cheap flights from Knoxville to London from $348

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 10/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Knoxville to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
4:57 pm - 10:25 am
TYS
-
LHR
13h 28m
1 stop
Iberia Logo
7:35 am - 10:40 pm
LHR
-
TYS
20h 05m
2 stops
$878Iberia
Wed, Oct 28 - Wed, Nov 4
Iberia Logo
11:35 am - 10:25 am
TYS
-
LHR
17h 50m
1 stop
Iberia Logo
7:35 am - 10:40 pm
LHR
-
TYS
20h 05m
2 stops
$879Iberia
Wed, Nov 11 - Wed, Nov 18
United Airlines Logo
6:00 am - 6:45 am
TYS
-
LHR
19h 45m
1 stop
United Airlines Logo
6:50 am - 5:08 pm
LHR
-
TYS
15h 18m
2 stops
$883United Airlines
Tue, Sep 22 - Tue, Oct 13
United Airlines Logo
10:45 am - 7:15 am
TYS
-
LHR
15h 30m
2 stops
United Airlines Logo
6:50 am - 5:08 pm
LHR
-
TYS
15h 18m
2 stops
$887United Airlines
Tue, Sep 22 - Tue, Oct 13
Multiple Airlines Logo
5:45 am - 6:30 am
TYS
-
LHR
19h 45m
2 stops
Multiple Airlines Logo
8:25 pm - 11:59 pm
LHR
-
TYS
32h 34m
2 stops
$888Multiple Airlines
Wed, Oct 7 - Mon, Oct 19
British Airways Logo
3:53 pm - 6:55 am
TYS
-
LHR
10h 02m
1 stop
British Airways Logo
7:50 am - 11:59 pm
LHR
-
TYS
21h 09m
2 stops
$895British Airways
Wed, Sep 30 - Wed, Oct 14
United Airlines Logo
7:00 am - 5:55 am
TYS
-
LHR
17h 55m
1 stop
United Airlines Logo
7:30 am - 9:05 pm
LHR
-
TYS
18h 35m
2 stops
$903United Airlines
Mon, Nov 30 - Fri, Dec 11
United Airlines Logo
7:00 am - 5:55 am
TYS
-
LHR
17h 55m
1 stop
United Airlines Logo
7:30 am - 9:05 pm
LHR
-
TYS
18h 35m
2 stops
$904United Airlines
Mon, Nov 30 - Fri, Dec 11
United Airlines Logo
7:00 am - 5:55 am
TYS
-
LHR
17h 55m
1 stop
United Airlines Logo
7:30 am - 9:05 pm
LHR
-
TYS
18h 35m
2 stops
$905United Airlines
Mon, Nov 30 - Fri, Dec 11
British Airways Logo
3:53 pm - 6:55 am
TYS
-
LHR
10h 02m
1 stop
British Airways Logo
7:55 am - 8:13 pm
LHR
-
TYS
17h 18m
2 stops
$908British Airways
Mon, Sep 21 - Fri, Oct 2

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United Airlines flights from Knoxville to London Heathrow Airport

Our best United Airlines deals on Knoxville to London Heathrow Airport flight tickets
United Airlines
Sep 22
TYS6:00 amKnoxville McGhee Tyson
19h 45m
1 stop
LHR6:45 amLondon Heathrow
Oct 13
LHR6:50 amLondon Heathrow
15h 18m
2 stops
TYS5:08 pmKnoxville McGhee Tyson
$883
United Airlines
Sep 22
TYS10:45 amKnoxville McGhee Tyson
15h 30m
2 stops
LHR7:15 amLondon Heathrow
Oct 13
LHR6:50 amLondon Heathrow
15h 18m
2 stops
TYS5:08 pmKnoxville McGhee Tyson
$887
United Airlines
Nov 30
TYS7:00 amKnoxville McGhee Tyson
17h 55m
1 stop
LHR5:55 amLondon Heathrow
Dec 11
LHR7:30 amLondon Heathrow
18h 35m
2 stops
TYS9:05 pmKnoxville McGhee Tyson
$904

Iberia flights from Knoxville to London Heathrow Airport

Our best Iberia deals on Knoxville to London Heathrow Airport flight tickets
Iberia
Oct 28
TYS4:57 pmKnoxville McGhee Tyson
13h 28m
1 stop
LHR10:25 amLondon Heathrow
Nov 4
LHR7:35 amLondon Heathrow
20h 05m
2 stops
TYS10:40 pmKnoxville McGhee Tyson
$878
Iberia
Nov 11
TYS11:35 amKnoxville McGhee Tyson
17h 50m
1 stop
LHR10:25 amLondon Heathrow
Nov 18
LHR7:35 amLondon Heathrow
20h 05m
2 stops
TYS10:40 pmKnoxville McGhee Tyson
$879
Iberia
Sep 14
TYS1:22 pmKnoxville McGhee Tyson
16h 28m
1 stop
LHR10:50 amLondon Heathrow
Sep 23
LHR6:15 amLondon Heathrow
18h 28m
2 stops
TYS7:43 pmKnoxville McGhee Tyson
$957

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to London Heathrow Airport 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 July 6, 2026.
Use the filters below to find and compare flights from Knoxville to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 10/28

4:57 pm-10:25 am

1 stop13h 28m

London Heathrow

Wed 11/4

7:35 am-10:40 pm

2 stops20h 05m

$878

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 11/11

11:35 am-10:25 am

1 stop17h 50m

London Heathrow

Wed 11/18

7:35 am-10:40 pm

2 stops20h 05m

$879

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Tue 9/22

6:00 am-6:45 am

1 stop19h 45m

London Heathrow

Tue 10/13

6:50 am-5:08 pm

2 stops15h 18m

$883

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Tue 9/22

10:45 am-7:15 am

2 stops15h 30m

London Heathrow

Tue 10/13

6:50 am-5:08 pm

2 stops15h 18m

$887

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 10/7

5:45 am-6:30 am

2 stops19h 45m

London Heathrow

Mon 10/19

8:25 pm-11:59 pm

2 stops32h 34m

$888

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 9/30

3:53 pm-6:55 am

1 stop10h 02m

London Heathrow

Wed 10/14

7:50 am-11:59 pm

2 stops21h 09m

$895

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 11/30

7:00 am-5:55 am

1 stop17h 55m

London Heathrow

Fri 12/11

7:30 am-9:05 pm

2 stops18h 35m

$903

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 11/30

7:00 am-5:55 am

1 stop17h 55m

London Heathrow

Fri 12/11

7:30 am-9:05 pm

2 stops18h 35m

$904

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 11/30

7:00 am-5:55 am

1 stop17h 55m

London Heathrow

Fri 12/11

7:30 am-9:05 pm

2 stops18h 35m

$905
Quickest round-trip

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 9/21

3:53 pm-6:55 am

1 stop10h 02m

London Heathrow

Fri 10/2

7:55 am-8:13 pm

2 stops17h 18m

$908

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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2

See travel insights to London from

How to get the cheapest flight ticket from Knoxville to London Heathrow Airport

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 Heathrow Airport?

The month of November is, on average, the cheapest month to fly to London Heathrow Airport from Knoxville, with most prices found around $798. If you’re not able to fly to London Heathrow Airport in November, then August is your next best option. Flight prices from Knoxville to London Heathrow Airport during August average around $820.

Can stopping save me money on Knoxville to London Heathrow Airport flights?

You could potentially save up to 14% on your flight if you consider stops on a Knoxville to London Heathrow Airport flight.

When to book flights from Knoxville to London Heathrow Airport

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

Cheap Knoxville to London Heathrow Airport (TYS to LHR) flight deals and tips

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

Fastest flight time

10h 15m

Direct flights

None
The fastest flight from Knoxville to London Heathrow Airport takes 10h 15m
There are no direct flights from Knoxville to London Heathrow Airport. There are no popular flight routes from Knoxville to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from Knoxville to London Heathrow Airport

  • How far is Knoxville McGhee Tyson to London Heathrow by plane?

    London Heathrow is 4065.6 mi away from Knoxville McGhee Tyson. In terms of flight time, this usually takes a little over 10h 15m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to London Heathrow Airport.

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

    The required travel and health documents for your London Heathrow Airport 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 Heathrow Airport. 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 Heathrow Airport?

Best airlines flying from Knoxville to London Heathrow Airport

Compare and see reviews for airlines that fly from Knoxville to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom $572Free CancellationRating
7.5
691 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $624Free CancellationRating
7.8
8,451 reviews
Search Delta flights
American AirlinesPriceFrom $674Free CancellationRating
7.1
11,783 reviews
Search American Airlines flights
United AirlinesPriceFrom $677Free CancellationRating
7.4
9,945 reviews
Search United Airlines flights
British AirwaysPriceFrom $734Free CancellationRating
6.7
8,099 reviews
Search British Airways flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Luton
Hayes
Dover
Crawley
Croydon
Wembley
Stansted
Stratford-upon-Avon
Harrow
Slough
Watford
Ilford
Cobham
Brentwood
Folkestone
Guildford
Romford

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Knoxville to London for you.

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?

Price alerts on flights to London from Knoxville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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