Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Knoxville from £433

LHR — TYS
5 Oct — 12 Oct1
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 1/1010:25 -
1 stop15h 20m
Wed 21/1010:42 -
1 stop15h 03m
Deal found 3/9£549
Tue 20/1006:40 -
2 stops20h 42m
Sat 24/1016:11 -
2 stops19h 49m
Deal found 31/8£586
Thu 1/1006:40 -
2 stops22h 15m
Wed 28/1018:23 -
2 stops17h 37m
Deal found 4/9£591
Wed 30/919:30 -
2 stops33h 25m
Wed 18/1114:40 -
2 stops20h 20m
Deal found 4/9£601
Mon 19/1019:30 -
2 stops31h 52m
Fri 30/1016:11 -
2 stops22h 19m
Deal found 31/8£631
Tue 17/1109:30 -
2 stops15h 06m
Tue 1/1213:55 -
1 stop11h 45m
Deal found 4/9£679
Tue 17/1109:00 -
2 stops16h 54m
Tue 1/1210:57 -
2 stops14h 43m
Deal found 4/9£683
Tue 17/1114:10 -
1 stop13h 38m
Tue 1/1218:05 -
1 stop12h 55m
Deal found 4/9£688
Wed 28/1012:15 -
2 stops27h 14m
Sat 14/1106:00 -
1 stop20h 50m
Deal found 2/9£695
Sun 22/1106:30 -
2 stops19h 24m
Tue 1/1219:35 -
1 stop10h 15m
Deal found 4/9£696

Find flight deals from Heathrow to Knoxville

Round-trip from

£549

One-way from

£433

Popular in

December

Cheapest in

March

Average price

£680
United Airlines
  • United Airlines
  • 1/10-21/10
  • 2 total stops
  • 30h 23m total
  • London to Knoxville
Search Deals
20/2-31/12
  • 20/2-31/12
  • 2 total stops
  • 32h 38m total
  • London to Knoxville
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£68 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 September 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

Sat 20/2

10:00-13:38

2 stops32h 38m

Knoxville McGhee Tyson

Wed 31/12

00:00-06:00

Nonstop0h 00m

£433
Fastest return journey

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Sat 20/2

13:10-21:47

1 stop13h 37m

Knoxville McGhee Tyson

Wed 31/12

00:00-06:00

Nonstop0h 00m

£508

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Tue 20/10

06:40-22:22

2 stops20h 42m

Knoxville McGhee Tyson

Sat 24/10

16:11-17:00

2 stops19h 49m

£586

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Thu 28/1

06:40-23:46

2 stops22h 06m

Knoxville McGhee Tyson

Mon 1/2

17:57-09:20

2 stops34h 23m

£601

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

13:54-05:55

1 stop11h 01m

£696

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Thu 1/10

07:30-20:19

2 stops17h 49m

Knoxville McGhee Tyson

Thu 8/10

05:45-06:30

2 stops19h 45m

£716

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Sat 3/10

06:50-20:19

2 stops18h 29m

Knoxville McGhee Tyson

Sun 18/10

08:30-21:35

1 stop32h 05m

£717

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Sun 18/10

11:05-17:08

2 stops35h 03m

Knoxville McGhee Tyson

Sun 25/10

11:20-21:20

1 stop30h 00m

£726

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Thu 28/1

06:50-19:17

2 stops17h 27m

Knoxville McGhee Tyson

Mon 1/2

12:20-06:20

1 stop13h 00m

£726

Flights are sorted by cheapest return flights first.

Deals found on 3/9

Sorted by cheapest first

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 £589). Flying from London Heathrow Airport to Knoxville in December is currently the most expensive (average of £1,045). 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 typical for this route at the moment.

London Heathrow Airport to Knoxville flights typically cost between £547 and £707 in October.
The cheapest return price found within the last 5 days was £549 on United Airlines (1 Oct–21 Oct).

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
10,172 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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
10,172 reviews
United Airlines
7.4
Good
10,172 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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
696 reviews
United Airlines
7.4
Good
10,172 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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
8,223 reviews
United Airlines
7.4
Good
10,172 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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
8,206 reviews
United Airlines
7.4
Good
10,172 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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 and Lufthansa can get you from London Heathrow Airport to Knoxville in just under 17h 24m. Your travel time can differ by up to 3h 18m. 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 £367, 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 £453 and £457, 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 £589). Flying from London Heathrow Airport to Knoxville in December is currently the most expensive (average of £1,045). 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£367Average£825FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£453Average£794FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£457Average£647FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£475Average£787FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.