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Cheap flights from Knoxville to London Heathrow Airport from £209

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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LHR
6 fev — 13 fev1
1 adult
1 adult, Economy, 0 bags

Cheap 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 7 janeiro 2026.

Round-trip from

£433

One-way from

£209

Popular in

June

Cheapest in

October

Average price

£589
British Airways
  • British Airways
  • 7/4-21/4
  • 3 total stops
  • 29h 24m total
  • Knoxville to London
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1/3
  • 1/3
  • 3 total stops
  • 58h 42m total
  • Knoxville to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£118 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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Find 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 7 janeiro 2026.

ter 7/419:33TYS - LHR
1 stop11h 42mBritish Airways
ter 21/409:15LHR - TYS
2 stops17h 42mBritish Airways
Deal found 6/1£433
ter 13/117:17TYS - LHR
1 stop10h 58mBritish Airways
ter 20/111:45LHR - TYS
1 stop14h 36mBritish Airways
Deal found 6/1£435
qua 18/213:50TYS - LHR
1 stop13h 05mLufthansa
seg 23/206:35LHR - TYS
2 stops17h 54mLufthansa
Deal found 6/1£444
ter 31/306:10TYS - LHR
1 stop20h 40mBritish Airways
ter 14/419:25LHR - TYS
2 stops31h 32mBritish Airways
Deal found 6/1£445
qua 22/417:06TYS - LHR
1 stop14h 09mBritish Airways
qua 6/516:30LHR - TYS
2 stops34h 27mBritish Airways
Deal found 6/1£448
ter 13/114:37TYS - LHR
2 stops13h 08mDelta
ter 20/111:30LHR - TYS
2 stops17h 15mDelta
Deal found 6/1£449
sex 13/213:50TYS - LHR
1 stop11h 05mLufthansa
seg 16/207:30LHR - TYS
2 stops16h 59mLufthansa
Deal found 5/1£452
qua 18/216:02TYS - LHR
1 stop11h 13mMultiple Airlines
seg 23/219:40LHR - TYS
2 stops28h 32mMultiple Airlines
Deal found 6/1£452
ter 31/313:53TYS - LHR
1 stop11h 52mLufthansa
ter 14/409:00LHR - TYS
2 stops18h 29mLufthansa
Deal found 5/1£455
sex 13/216:02TYS - LHR
1 stop13h 23mIberia
seg 16/218:45LHR - TYS
2 stops30h 55mIberia
Deal found 5/1£456

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 7 janeiro 2026.
Use the filters below to find and compare flights from Knoxville to London Heathrow Airport that are best for you.

Fly from

Knoxville

Fly to

Heathrow

Route

Depart

Return

Price

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

ter 31/3

16:02-07:40

1 stop10h 38m

London Heathrow

ter 14/4

09:45-21:35

1 stop16h 50m

£447

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

qua 22/4

17:06-12:15

1 stop14h 09m

London Heathrow

qua 6/5

16:30-21:57

2 stops34h 27m

£448

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

ter 7/4

11:18-08:50

2 stops16h 32m

London Heathrow

ter 21/4

06:30-16:49

2 stops15h 19m

£461

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

qua 18/2

12:21-11:40

1 stop18h 19m

London Heathrow

seg 23/2

11:15-23:59

1 stop17h 44m

£461

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

qua 22/4

17:30-13:05

2 stops14h 35m

London Heathrow

qua 6/5

06:15-16:54

2 stops15h 39m

£461

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

qua 6/5

17:30-12:05

2 stops13h 35m

London Heathrow

qua 20/5

10:45-21:28

1 stop15h 43m

£465

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

sex 20/2

10:55-05:55

1 stop14h 00m

London Heathrow

sex 27/2

06:50-20:37

2 stops18h 47m

£466

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

sex 6/2

14:25-06:40

1 stop11h 15m

London Heathrow

seg 9/2

06:50-16:53

2 stops15h 03m

£466

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

qui 19/2

13:50-05:55

1 stop11h 05m

London Heathrow

qui 26/2

06:50-19:29

2 stops17h 39m

£466

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

qua 25/3

06:10-06:35

1 stop20h 25m

£269

Flights are sorted by cheapest return flights first.

Deals found on 6/1

Showing 1-10 of 19 results
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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 2 January 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 £399). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of £670). 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.

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 £447, British Airways can have you in London Heathrow Airport from Knoxville in 10h 38m. 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 £399). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of £670). 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
Luton
Croydon
Northampton
Slough
Hounslow
Gatwick
Ilford
Wembley
Brentford
Hayes
Colchester
Watford
Crawley
Swindon
Kingston upon Thames
Bedford
Chelmsford
Eastbourne
Romford

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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?

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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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