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Cheap flights from Knoxville to London Heathrow Airport from £298

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 25/3. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LHR
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Knoxville McGhee Tyson to London Heathrow are usually found in February or October, booked 85 days in advance, depart on a Tuesday or Monday and return on a Monday

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 12 December 2025.

Tue 30/1209:50TYS - LHR
2 stops42h 30mAir Canada
Fri 9/118:00LHR - TYS
2 stops30h 27mAir Canada
Deal found 10/12£519
Tue 30/1206:45TYS - LHR
1 stop20h 10mUnited Airlines
Fri 9/113:25LHR - TYS
2 stops26h 32mUnited Airlines
Deal found 10/12£534
Tue 30/1211:00TYS - LHR
1 stop13h 55mLufthansa
Fri 9/112:05LHR - TYS
1 stop12h 22mLufthansa
Deal found 10/12£535
Tue 30/1209:50TYS - LHR
2 stops42h 30mAir Canada
Thu 8/113:25LHR - TYS
2 stops32h 28mAir Canada
Deal found 10/12£562
Tue 30/1214:00TYS - LHR
1 stop11h 40mUnited Airlines
Wed 7/118:00LHR - TYS
2 stops25h 49mUnited Airlines
Deal found 10/12£564
Tue 30/1214:00TYS - LHR
1 stop11h 40mUnited Airlines
Thu 8/112:05LHR - TYS
1 stop12h 22mUnited Airlines
Deal found 10/12£577
Tue 30/1206:27TYS - LHR
1 stop19h 38mDelta
Wed 7/120:00LHR - TYS
1 stop20h 12mDelta
Deal found 10/12£608
Wed 31/1206:27TYS - LHR
1 stop19h 38mDelta
Wed 7/108:55LHR - TYS
1 stop16h 27mDelta
Deal found 10/12£627
Tue 30/1205:45TYS - LHR
2 stops21h 45mAir Canada
Tue 6/118:00LHR - TYS
2 stops25h 49mAir Canada
Deal found 10/12£681
Sun 28/1210:49TYS - LHR
2 stops29h 26mBritish Airways
Sun 11/107:00LHR - TYS
2 stops18h 56mBritish Airways
Deal found 10/12£695
Sun 28/1217:40TYS - LHR
1 stop10h 35mMultiple Airlines
Sun 11/109:55LHR - TYS
1 stop13h 51mMultiple Airlines
Deal found 10/12£702

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 12 December 2025.

Round-trip from

£419

One-way from

£298

Popular in

December

Cheapest in

February

Average price

£1,031
Lufthansa
  • Lufthansa
  • 7/1-14/1
  • 3 total stops
  • 27h 17m total
  • Knoxville to London
Search Deals
United Airlines
  • United Airlines
  • 25/3
  • 1 total stop
  • 23h 10m total
  • Knoxville to London
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£33 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 12 December 2025.
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

Tue 31/3

17:01-16:00

2 stops17h 59m

London Heathrow

Tue 14/4

06:40-23:46

2 stops22h 06m

£461

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Fri 16/1

09:05-10:15

1 stop20h 10m

London Heathrow

Tue 20/1

06:50-14:49

2 stops36h 59m

£468

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 7/1

11:10-06:40

2 stops14h 30m

London Heathrow

Wed 14/1

09:00-20:52

2 stops16h 52m

£472

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 26/1

14:25-10:25

2 stops15h 00m

London Heathrow

Mon 2/2

09:00-20:52

2 stops16h 52m

£472

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 26/1

09:30-07:10

3 stops16h 40m

London Heathrow

Mon 2/2

18:00-14:49

2 stops25h 49m

£485

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 26/1

16:00-07:20

1 stop10h 20m

London Heathrow

Mon 2/2

11:45-18:46

1 stop12h 01m

£488

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 7/1

11:54-06:20

1 stop13h 26m

London Heathrow

Sun 11/1

15:50-20:43

1 stop33h 53m

£490

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Thu 8/1

16:06-07:50

1 stop10h 44m

London Heathrow

Sun 11/1

20:00-11:12

1 stop20h 12m

£490

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 25/3

09:40-05:55

2 stops16h 15m

£298

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 6/4

17:01-12:50

3 stops38h 49m

£301

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 11 results
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 5 December 2025.

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 £401). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of £678). 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.

What is the cheapest time of day to fly from TYS to LHR?

Find hourly flight availability from Knoxville to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.

When flying from Knoxville to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 37% versus a flight in the morning.

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 £461, Scandinavian Airlines can have you in London Heathrow Airport from Knoxville in 17h 59m. 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 £401). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of £678). 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
Croydon
Slough
Northampton
Hounslow
Luton
Gatwick
Wembley
Ilford
Brentford
Colchester
Watford
Hayes
Crawley
Winchester
Swindon
Deal
Bedford
Romford
Chichester

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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?

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