Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Knoxville from £431

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
5 May — 12 May1
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
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 5 April 2026.

Fri 30/1017:05
LHR
-
TYS
2 stops21h 22m
American Airlines
Mon 9/1116:15
TYS
-
LHR
1 stop10h 05m
American Airlines
Deal found 5/4£664
Mon 7/906:55
LHR
-
TYS
2 stops18h 33m
Lufthansa
Sun 13/919:19
TYS
-
LHR
1 stop30h 36m
Lufthansa
Deal found 2/4£672
Wed 29/412:30
LHR
-
TYS
1 stop14h 27m
British Airways
Wed 6/517:06
TYS
-
LHR
1 stop12h 24m
British Airways
Deal found 31/3£675
Wed 29/408:40
LHR
-
TYS
2 stops19h 28m
United Airlines
Wed 6/507:00
TYS
-
LHR
2 stops17h 55m
United Airlines
Deal found 31/3£684
Mon 7/908:40
LHR
-
TYS
2 stops20h 17m
United Airlines
Sun 13/919:19
TYS
-
LHR
1 stop30h 36m
United Airlines
Deal found 2/4£688
Sun 3/511:05
LHR
-
TYS
2 stops34h 49m
United Airlines
Sun 10/518:01
TYS
-
LHR
1 stop33h 29m
United Airlines
Deal found 5/4£699
Fri 30/1007:40
LHR
-
TYS
1 stop17h 25m
Lufthansa
Sun 8/1119:35
TYS
-
LHR
1 stop30h 05m
Lufthansa
Deal found 5/4£714
Sat 2/507:25
LHR
-
TYS
2 stops17h 47m
Lufthansa
Wed 6/514:25
TYS
-
LHR
1 stop11h 30m
Lufthansa
Deal found 1/4£715
Sat 2/507:25
LHR
-
TYS
2 stops18h 20m
United Airlines
Wed 6/510:49
TYS
-
LHR
2 stops15h 26m
United Airlines
Deal found 1/4£718
Mon 7/906:30
LHR
-
TYS
2 stops15h 47m
Delta
Sun 13/919:20
TYS
-
LHR
2 stops14h 15m
Delta
Deal found 2/4£719
Sun 22/1107:30
LHR
-
TYS
2 stops31h 30m
United Airlines
Sun 29/1119:35
TYS
-
LHR
2 stops30h 35m
United Airlines
Deal found 4/4£722

Find 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 5 April 2026.

Round-trip from

£672

One-way from

£431

Popular in

December

Cheapest in

September

Average price

£685
Lufthansa
  • Lufthansa
  • 7/9-13/9
  • 3 total stops
  • 49h 09m total
  • London to Knoxville
Search Deals
4/6
  • 4/6
  • 2 total stops
  • 43h 51m total
  • London to Knoxville
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£91 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 5 April 2026.
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 - TYS

LHRTYS

London Heathrow

Wed 29/4

08:40-23:08

2 stops19h 28m

Knoxville McGhee Tyson

Wed 6/5

19:18-10:40

1 stop10h 22m

£684

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 2/5

07:25-20:45

2 stops18h 20m

Knoxville McGhee Tyson

Wed 6/5

10:49-07:15

2 stops15h 26m

£718

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 29/9

09:15-21:54

1 stop17h 39m

Knoxville McGhee Tyson

Sat 3/10

16:01-06:55

1 stop9h 54m

£733

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Thu 10/9

08:45-20:48

2 stops17h 03m

Knoxville McGhee Tyson

Sat 19/9

17:57-06:45

1 stop31h 48m

£744

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 24/4

13:10-20:18

1 stop12h 08m

Knoxville McGhee Tyson

Mon 27/4

07:00-07:50

1 stop19h 50m

£772

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 18/5

06:55-20:12

2 stops18h 17m

Knoxville McGhee Tyson

Wed 3/6

19:19-10:40

1 stop10h 21m

£780

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Wed 1/7

16:40-10:42

1 stop23h 02m

Knoxville McGhee Tyson

Wed 15/7

06:30-09:35

2 stops22h 05m

£800
Fastest return journey

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 12/5

12:15-20:12

1 stop12h 57m

Knoxville McGhee Tyson

Sat 6/6

19:19-10:40

1 stop10h 21m

£809
Cheapest one-way

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Thu 4/6

21:25-12:16

2 stops43h 51m

£431

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 12/5

07:25-20:12

2 stops17h 47m

£451

Flights are sorted by cheapest return flights first.

Deals found on 31/3

Showing 1-10 of 13 resultsSorted by cheapest first
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 3 April 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 66 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £463). Flying from London Heathrow Airport to Knoxville in January is currently the most expensive (average of £604). 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 5 April 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
7.7
Good
1,379 reviews
Check prices

Overall

7.7

Crew

8.2

Food

6.7

Comfort

7.5

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Finnair
7.7
Good
1,379 reviews
Finnair
7.7
Good
1,379 reviews
Check prices

Overall

7.7

Crew

8.2

Food

6.7

Comfort

7.5

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Virgin Atlantic
7.5
Good
685 reviews
Finnair
7.7
Good
1,379 reviews
Check prices

Overall

7.7

Crew

8.2

Food

6.7

Comfort

7.5

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
United Airlines
7.4
Good
9,546 reviews
Finnair
7.7
Good
1,379 reviews
Check prices

Overall

7.7

Crew

8.2

Food

6.7

Comfort

7.5

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Lufthansa
6.8
Okay
7,892 reviews
Finnair
7.7
Good
1,379 reviews
Check prices

Overall

7.7

Crew

8.2

Food

6.7

Comfort

7.5

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
British Airways
6.7
Okay
7,857 reviews
Finnair
7.7
Good
1,379 reviews
Check prices

Overall

7.7

Crew

8.2

Food

6.7

Comfort

7.5

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

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 5 different airlines.

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

    United Airlines and British Airways can get you from London Heathrow Airport to Knoxville in just under 17h 39m. Your travel time can differ by up to 1h 49m. 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 £463, 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 £474 and £483, 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £463). Flying from London Heathrow Airport to Knoxville in January is currently the most expensive (average of £604). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from Heathrow to Knoxville

Discover the top 5 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 5 April 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£463Average£661FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£474Average£629FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£483Average£682FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£515Average£684FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£518Average£656FlexibilityNo cancel feeOn-time76%
Search Finnair 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.

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.