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Cheap flights from Knoxville to London Heathrow Airport from £262

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/7. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LHR
28 Apr — 5 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Knoxville to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Knoxville to Heathrow
Explore the most affordable flight options available from Knoxville to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 March 2026.

Mon 28/916:00
TYS
-
LHR
2 stops21h 30m
Scandinavian Airlines
Tue 13/1006:40
LHR
-
TYS
2 stops20h 05m
Scandinavian Airlines
Deal found 24/3£627
Tue 31/319:20
TYS
-
LHR
2 stops15h 20m
Lufthansa
Tue 7/409:00
LHR
-
TYS
2 stops18h 34m
Lufthansa
Deal found 24/3£630
Wed 12/817:57
TYS
-
LHR
2 stops18h 43m
Lufthansa
Fri 21/809:00
LHR
-
TYS
2 stops19h 57m
Lufthansa
Deal found 24/3£638
Tue 1/920:25
TYS
-
LHR
1 stop29h 30m
British Airways
Tue 15/906:15
LHR
-
TYS
2 stops20h 39m
British Airways
Deal found 24/3£645
Tue 21/416:38
TYS
-
LHR
2 stops20h 52m
Scandinavian Airlines
Tue 28/406:40
LHR
-
TYS
2 stops22h 14m
Scandinavian Airlines
Deal found 25/3£648
Wed 19/817:37
TYS
-
LHR
1 stop11h 53m
Iberia
Wed 2/920:00
LHR
-
TYS
2 stops30h 23m
Iberia
Deal found 24/3£648
Wed 11/1117:57
TYS
-
LHR
2 stops17h 03m
Scandinavian Airlines
Thu 19/1121:05
LHR
-
TYS
3 stops29h 40m
Scandinavian Airlines
Deal found 26/3£654
Wed 19/819:19
TYS
-
LHR
2 stops15h 21m
Lufthansa
Wed 2/910:50
LHR
-
TYS
2 stops18h 07m
Lufthansa
Deal found 25/3£654
Wed 19/814:54
TYS
-
LHR
1 stop16h 56m
British Airways
Wed 2/909:15
LHR
-
TYS
2 stops17h 29m
British Airways
Deal found 24/3£657
Mon 10/815:01
TYS
-
LHR
1 stop13h 04m
British Airways
Thu 27/809:15
LHR
-
TYS
2 stops17h 29m
British Airways
Deal found 25/3£657
Wed 15/417:53
TYS
-
LHR
2 stops18h 47m
Lufthansa
Mon 20/419:30
LHR
-
TYS
2 stops32h 04m
Lufthansa
Deal found 24/3£659
Wed 2/920:25
TYS
-
LHR
1 stop11h 25m
Multiple Airlines
Wed 9/906:30
LHR
-
TYS
2 stops20h 24m
Multiple Airlines
Deal found 25/3£660

Find flight deals from Knoxville to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 March 2026.

Round-trip from

£638

One-way from

£262

Popular in

December

Cheapest in

January

Average price

£664
Lufthansa
  • Lufthansa
  • 12/8-21/8
  • 4 total stops
  • 38h 40m total
  • Knoxville to London
Search Deals
British Airways
  • British Airways
  • 19/7
  • 1 total stop
  • 11h 45m total
  • Knoxville to London
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Knoxville to Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 29 March 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 return flight

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 15/4

10:49-06:45

1 stop14h 56m

London Heathrow

Mon 20/4

17:50-17:01

2 stops28h 11m

£672

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 17/8

13:48-06:45

1 stop11h 57m

London Heathrow

Fri 21/8

06:50-20:28

2 stops18h 38m

£718
Fastest return journey

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Tue 1/9

12:00-06:45

2 stops13h 45m

London Heathrow

Tue 15/9

06:30-18:17

2 stops16h 47m

£731

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 17/8

16:00-16:00

2 stops19h 00m

London Heathrow

Fri 21/8

06:40-21:46

2 stops20h 06m

£887

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Fri 11/9

16:00-16:00

2 stops19h 00m

London Heathrow

Fri 18/9

19:50-20:42

3 stops29h 52m

£904

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 8/6

13:35-09:20

2 stops14h 45m

London Heathrow

Wed 17/6

07:30-20:56

2 stops18h 26m

£914

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 8/7

17:25-12:05

2 stops13h 40m

London Heathrow

Sat 18/7

08:55-22:39

2 stops18h 44m

£917

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 27/5

10:45-06:55

2 stops15h 10m

London Heathrow

Fri 5/6

09:30-23:54

2 stops19h 24m

£927
Cheapest one-way

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Sun 19/7

20:05-12:50

1 stop11h 45m

£262

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Sun 19/7

18:26-17:15

2 stops41h 49m

£277

Flights are sorted by cheapest return flights first.

Deals found on 26/3

Showing 1-10 of 15 resultsSorted by cheapest first
1
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Best time to book a flight from Knoxville to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Knoxville with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Knoxville to London Heathrow Airport

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

Use this chart to determine the optimal time to book a return flight from Knoxville to Heathrow. Price data was last updated on 13 March 2026.

The price you pay for your flight from Knoxville to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 85 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Knoxville to London Heathrow Airport?

Currently, July is the cheapest month in which you can book a flight from Knoxville to London Heathrow Airport (average of £405). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of £666). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Knoxville to London Heathrow Airport?

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Knoxville to London Heathrow?

    If you book a flight to London Heathrow from Knoxville, you will be flying from McGhee Tyson, which is the city’s only airport. Knoxville McGhee Tyson (TYS) is located 11.3 mi from the center of Knoxville. There are 0 flights from McGhee Tyson to London Heathrow per day from 0 different airlines.

  • How long is the flight from Knoxville to London Heathrow Airport?

    For as low as £731, United Airlines can have you in London Heathrow Airport from Knoxville in 13h 45m. There are 4076 mi between Knoxville and London Heathrow Airport. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Knoxville to Heathrow that include hotel bookings?

    Yes. In addition to deals on Knoxville to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Heathrow.

  • Can I find deals for business class flights from Knoxville to Heathrow?

    Yes. Cheapflights offers flight deals from Knoxville to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, July is the cheapest month in which you can book a flight from Knoxville to London Heathrow Airport (average of £405). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of £666). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Eastbourne
Guildford
Watford
Kingston upon Thames
Romford
Ipswich
Swindon
Bedford

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How does Cheapflights help users find flights from Knoxville to Heathrow?

Deals for Knoxville to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Knoxville to Heathrow?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Knoxville to Heathrow for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Knoxville to Heathrow with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Knoxville to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Knoxville to Heathrow become cheaper?

Of course! You can now track prices for flights from Knoxville to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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