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Cheap flights from London Heathrow Airport to Knoxville from £398

LHR — TYS
20 Sep — 27 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Knoxville

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Knoxville

Thu 3/1218:40 -
2 stops34h 17m
Mon 7/1218:09 -
2 stops16h 51m
Deal found 16/8£597
Sun 25/1006:40 -
2 stops21h 19m
Sun 15/1116:03 -
2 stops24h 37m
Deal found 19/8£616
Wed 16/907:45 -
2 stops20h 04m
Wed 23/909:45 -
1 stop19h 55m
Deal found 18/8£633
Mon 14/907:30 -
2 stops21h 29m
Mon 28/919:25 -
1 stop10h 15m
Deal found 16/8£640
Sun 25/1007:30 -
2 stops20h 29m
Sun 15/1117:40 -
1 stop31h 15m
Deal found 19/8£651
Sun 22/1112:50 -
2 stops16h 09m
Mon 30/1106:45 -
1 stop18h 10m
Deal found 18/8£660
Wed 30/918:00 -
2 stops21h 37m
Wed 7/1012:05 -
1 stop18h 30m
Deal found 16/8£662
Wed 16/911:30 -
2 stops17h 29m
Mon 21/918:02 -
1 stop12h 53m
Deal found 19/8£666
Tue 15/918:00 -
2 stops20h 54m
Tue 22/906:00 -
2 stops23h 40m
Deal found 17/8£667
Tue 15/915:15 -
1 stop12h 27m
Tue 22/920:14 -
1 stop11h 01m
Deal found 17/8£669

Find flight deals from Heathrow to Knoxville

Round-trip from

£597

One-way from

£398

Popular in

December

Cheapest in

March

Average price

£820
Scandinavian Airlines
  • Scandinavian Airlines
  • 3/12-7/12
  • 4 total stops
  • 51h 08m total
  • London to Knoxville
Search Deals
1/11
  • 1/11
  • 2 total stops
  • 46h 27m total
  • London to Knoxville
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£65 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Thu 3/12

18:40-23:57

2 stops34h 17m

Knoxville McGhee Tyson

Mon 7/12

18:09-16:00

2 stops16h 51m

£597

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Sun 25/10

06:40-23:59

2 stops21h 19m

Knoxville McGhee Tyson

Sun 15/11

16:03-21:40

2 stops24h 37m

£616

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Tue 9/2

07:40-21:05

1 stop18h 25m

Knoxville McGhee Tyson

Tue 16/2

10:16-10:50

1 stop19h 34m

£669

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Sun 22/11

12:05-23:59

2 stops40h 54m

Knoxville McGhee Tyson

Mon 30/11

16:30-10:50

2 stops13h 20m

£680

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Tue 15/9

10:50-23:59

2 stops18h 09m

Knoxville McGhee Tyson

Tue 22/9

13:10-09:20

2 stops15h 10m

£683

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Sun 22/11

08:30-20:54

2 stops17h 24m

Knoxville McGhee Tyson

Tue 1/12

16:16-08:25

1 stop11h 09m

£693

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Wed 2/9

08:40-23:59

2 stops20h 19m

Knoxville McGhee Tyson

Mon 7/9

19:20-21:25

2 stops21h 05m

£693

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Sun 4/10

15:30-20:19

2 stops33h 49m

Knoxville McGhee Tyson

Sun 11/10

16:16-20:40

1 stop23h 24m

£700

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Mon 31/8

08:40-20:53

2 stops17h 13m

Knoxville McGhee Tyson

Mon 14/9

10:45-07:15

2 stops15h 30m

£707

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Sun 6/9

17:55-16:58

2 stops28h 03m

Knoxville McGhee Tyson

Sun 13/9

19:20-21:35

2 stops21h 15m

£708

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 23 resultsSorted by cheapest first
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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

Cheapflights Insights

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

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

Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £585). Flying from London Heathrow Airport to Knoxville in December is currently the most expensive (average of £1,038). 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?

Airfare is below average for this route at the moment.

London Heathrow Airport to Knoxville flights typically cost between £639 and £805 in December.
The cheapest return price found within the last 5 days was £597 on Scandinavian Airlines (3 Dec–7 Dec).

Reviews of airlines servicing Knoxville

Read reviews from past customers who have flown with United Airlines,Virgin Atlantic, andLufthansa 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.
United Airlines
7.4
Good
10,107 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.7

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
United Airlines
7.4
Good
10,107 reviews
United Airlines
7.4
Good
10,107 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.7

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Virgin Atlantic
7.4
Good
695 reviews
United Airlines
7.4
Good
10,107 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.7

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Lufthansa
6.8
Okay
8,203 reviews
United Airlines
7.4
Good
10,107 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.7

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
British Airways
6.7
Okay
8,181 reviews
United Airlines
7.4
Good
10,107 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.7

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!

Related info for your journey

  • 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 4 different airlines.

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

    Scandinavian Airlines, Lufthansa, and United Airlines can get you from London Heathrow Airport to Knoxville in just under 18h 25m. Your travel time can differ by up to 22h 29m. The distance from London Heathrow Airport to Knoxville is about 4076 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Currently priced at £364, Virgin Atlantic will fly you from London Heathrow Airport to Knoxville and back. In addition to Virgin Atlantic, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and United Airlines - these airlines can fly you to your destination from £450 and £459, respectively. These flights start at 51% 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £585). Flying from London Heathrow Airport to Knoxville in December is currently the most expensive (average of £1,038). 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

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Heathrow to Knoxville

AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£364Average£818FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£450Average£789FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£459Average£610FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£471Average£783FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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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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