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Cheap flights from London Heathrow Airport to Knoxville from £239

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 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
8 2月 — 15 2月1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Knoxville (TYS). 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 9 1月 2026.

Round-trip from

£503

One-way from

£239

Popular in

December

Cheapest in

September

Average price

£881
Lufthansa
  • Lufthansa
  • 5/2-27/2
  • 3 total stops
  • 27h 52m total
  • London to Knoxville
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21/4
  • 21/4
  • 2 total stops
  • 43h 45m total
  • London to Knoxville
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Highest demand for flights based on searches. 13% potential increase in price (£83 potential increase over avg. return price).
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Cheapest flight prices on average. 3% 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 Heathrow to Knoxville

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Knoxville
Explore the most affordable flight options available from Heathrow to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 1月 2026.

週二 10/209:00LHR - TYS
2 stops16h 52mUnited Airlines
週二 17/214:21TYS - LHR
1 stop11h 19mUnited Airlines
Deal found 7/1£509
週四 19/206:35LHR - TYS
2 stops17h 54mUnited Airlines
週一 23/209:10TYS - LHR
1 stop17h 20mUnited Airlines
Deal found 7/1£510
週日 22/206:50LHR - TYS
2 stops15h 02mUnited Airlines
週日 1/319:25TYS - LHR
1 stop10h 25mUnited Airlines
Deal found 8/1£512
週六 21/208:30LHR - TYS
2 stops17h 07mUnited Airlines
週六 28/210:55TYS - LHR
2 stops14h 25mUnited Airlines
Deal found 7/1£513
週二 10/209:55LHR - TYS
1 stop17h 59mBritish Airways
週二 17/216:02TYS - LHR
1 stop14h 33mBritish Airways
Deal found 7/1£518
週三 16/906:55LHR - TYS
2 stops32h 05mUnited Airlines
週三 23/910:50TYS - LHR
2 stops15h 05mUnited Airlines
Deal found 8/1£522
週四 16/407:25LHR - TYS
2 stops20h 04mUnited Airlines
週四 23/414:25TYS - LHR
2 stops38h 35mUnited Airlines
Deal found 7/1£527
週三 16/909:15LHR - TYS
1 stop11h 44mBritish Airways
週三 23/920:39TYS - LHR
1 stop10h 31mBritish Airways
Deal found 8/1£528
週四 16/407:25LHR - TYS
2 stops17h 17mLufthansa
週四 23/414:25TYS - LHR
1 stop11h 30mLufthansa
Deal found 7/1£529

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Knoxville 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 9 1月 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Knoxville that are best for you.

Fly from

Heathrow

Fly to

Knoxville

Route

Depart

Return

Price

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

週二 10/2

09:00-20:52

2 stops16h 52m

Knoxville McGhee Tyson

週二 17/2

14:21-06:40

1 stop11h 19m

£509

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

週四 19/2

06:35-19:29

2 stops17h 54m

Knoxville McGhee Tyson

週一 23/2

10:55-11:15

1 stop19h 20m

£510

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

週六 21/2

06:35-20:37

2 stops19h 02m

Knoxville McGhee Tyson

週六 28/2

19:25-06:40

1 stop30h 15m

£512

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

週日 22/2

06:50-16:52

2 stops15h 02m

Knoxville McGhee Tyson

週日 1/3

19:25-10:50

1 stop10h 25m

£512

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

週四 16/4

07:25-22:29

2 stops20h 04m

Knoxville McGhee Tyson

週四 23/4

14:25-10:00

2 stops38h 35m

£527

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

週四 16/4

07:25-19:42

2 stops17h 17m

Knoxville McGhee Tyson

週四 23/4

14:25-06:55

1 stop11h 30m

£529

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

週二 21/4

20:50-11:35

2 stops43h 45m

£239

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

週二 10/3

08:15-20:57

2 stops16h 42m

£397

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

週二 10/3

10:45-23:51

1 stop17h 06m

£400

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

週五 8/5

16:30-21:57

2 stops34h 27m

£451

Flights are sorted by cheapest return flights first.

Deals found on 7/1

Showing 1-10 of 11 results
1
2

Best time to book a flight from Heathrow to Knoxville

Have a flexible travel schedule? Discover the best time to fly to Knoxville from Heathrow 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 London Heathrow Airport to Knoxville

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

Use this chart to determine the optimal time to book a return flight from Heathrow to Knoxville. Price data was last updated on 2 January 2026.

The price you pay for your flight from London Heathrow Airport to Knoxville may vary depending on when you book. For the best chance of a lower fare, look to book 60 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 London Heathrow Airport to Knoxville?

Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £272). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of £559). 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 London Heathrow Airport to Knoxville?

Reviews of airlines servicing Knoxville

Get insights into the airlines that provide service to Knoxville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Knoxville. Reviews last updated 9 1月 2026.
Read reviews from past customers who have flown with Finnair, Virgin Atlantic, andUnited Airlines from London Heathrow Airport to Knoxville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,346 reviews
Check prices

Boarding

7.7

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,346 reviews
Finnair
7.6
Good
1,346 reviews
Check prices

Boarding

7.7

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Virgin Atlantic
7.5
Good
678 reviews
Finnair
7.6
Good
1,346 reviews
Check prices

Boarding

7.7

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
United Airlines
7.4
Good
9,141 reviews
Finnair
7.6
Good
1,346 reviews
Check prices

Boarding

7.7

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Lufthansa
6.8
Okay
7,697 reviews
Finnair
7.6
Good
1,346 reviews
Check prices

Boarding

7.7

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,659 reviews
Finnair
7.6
Good
1,346 reviews
Check prices

Boarding

7.7

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Knoxville. 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 into for flights to Knoxville from London Heathrow?

    If you book a flight to Knoxville from London Heathrow, you will be flying to 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 London Heathrow to McGhee Tyson per day from 6 different airlines.

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

    United Airlines can get you from London Heathrow Airport to Knoxville in just under 16h 52m. Your travel time can differ by up to . The distance from London Heathrow Airport to Knoxville is about 4076 mi.

  • What are the cheapest airlines flying from London Heathrow Airport to Knoxville round-trip?

    Currently priced at £455, Lufthansa will fly you from London Heathrow Airport to Knoxville and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and British Airways - these airlines can fly you to your destination from £466 and £478, respectively. These flights start at 36% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Knoxville 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 London Heathrow Airport to Knoxville?

    Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £272). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of £559). 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 Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Cherokee

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Top 6 airlines flying from Heathrow to Knoxville

Discover the top 6 airlines that operate flights from Heathrow to Knoxville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 9 1月 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£455Average£649FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£466Average£618FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£478Average£622FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£497Average£610FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£506Average£627FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£587Average£725FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Heathrow to Knoxville via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights helps you find that perfect flight to Knoxville from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Heathrow to Knoxville with no change fees.

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

Yes, Cheapflights offers price alerts on Heathrow to Knoxville flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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