Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Knoxville from £421

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 14/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
22 Aug — 29 Aug1
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 23 July 2026.

Mon 31/806:40
LHR
-
TYS
2 stops22h 12m
Scandinavian Airlines
Mon 7/916:38
TYS
-
LHR
2 stops18h 22m
Scandinavian Airlines
Deal found 19/7£568
Mon 14/906:40
LHR
-
TYS
2 stops20h 10m
Scandinavian Airlines
Thu 24/914:08
TYS
-
LHR
2 stops20h 52m
Scandinavian Airlines
Deal found 21/7£569
Thu 3/906:40
LHR
-
TYS
2 stops22h 12m
Scandinavian Airlines
Sun 6/917:00
TYS
-
LHR
2 stops20h 30m
Scandinavian Airlines
Deal found 21/7£591
Fri 4/906:40
LHR
-
TYS
3 stops20h 20m
Scandinavian Airlines
Fri 11/917:45
TYS
-
LHR
2 stops14h 50m
Scandinavian Airlines
Deal found 22/7£596
Mon 7/906:40
LHR
-
TYS
3 stops22h 12m
Scandinavian Airlines
Mon 21/916:40
TYS
-
LHR
2 stops24h 00m
Scandinavian Airlines
Deal found 22/7£626
Mon 31/814:25
LHR
-
TYS
1 stop12h 52m
Finnair
Mon 7/918:32
TYS
-
LHR
2 stops34h 08m
Finnair
Deal found 18/7£641
Mon 7/908:30
LHR
-
TYS
2 stops20h 29m
Lufthansa
Mon 21/919:20
TYS
-
LHR
1 stop10h 20m
Lufthansa
Deal found 22/7£664
Mon 14/909:30
LHR
-
TYS
2 stops19h 29m
Lufthansa
Thu 24/918:03
TYS
-
LHR
1 stop12h 52m
Lufthansa
Deal found 21/7£668
Sun 30/812:30
LHR
-
TYS
1 stop12h 37m
Finnair
Mon 7/918:05
TYS
-
LHR
2 stops34h 35m
Finnair
Deal found 18/7£671

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 23 July 2026.

Round-trip from

£568

One-way from

£421

Popular in

December

Cheapest in

September

Average price

£839
Scandinavian Airlines
  • Scandinavian Airlines
  • 31/8-7/9
  • 4 total stops
  • 40h 34m total
  • London to Knoxville
Search Deals
14/9
  • 14/9
  • 2 total stops
  • 45h 07m total
  • London to Knoxville
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£74 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 23 July 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

Mon 31/8

06:40-23:52

2 stops22h 12m

Knoxville McGhee Tyson

Mon 7/9

16:38-18:30

2 stops20h 52m

£568

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 14/9

06:40-21:50

2 stops20h 10m

Knoxville McGhee Tyson

Thu 24/9

14:08-16:00

2 stops20h 52m

£569

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Thu 3/9

06:40-23:52

2 stops22h 12m

Knoxville McGhee Tyson

Sun 6/9

17:00-18:30

2 stops20h 30m

£591

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 31/8

16:40-20:24

1 stop32h 44m

Knoxville McGhee Tyson

Tue 8/9

09:45-06:55

1 stop16h 10m

£677
Fastest return journey

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Wed 2/9

08:40-20:53

2 stops17h 13m

Knoxville McGhee Tyson

Wed 9/9

13:10-08:30

2 stops14h 20m

£678

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Thu 20/8

06:40-22:00

2 stops20h 20m

Knoxville McGhee Tyson

Thu 27/8

14:16-16:00

2 stops20h 44m

£691

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sun 30/8

11:05-16:58

1 stop34h 53m

Knoxville McGhee Tyson

Mon 7/9

18:02-06:45

1 stop31h 43m

£707

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Thu 3/9

07:25-20:24

2 stops17h 59m

Knoxville McGhee Tyson

Thu 10/9

09:45-06:45

2 stops16h 00m

£711

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 5/9

08:45-20:53

2 stops17h 08m

Knoxville McGhee Tyson

Sat 12/9

10:45-08:30

1 stop16h 45m

£736
Cheapest one-way

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 14/9

15:00-10:04

3 stops48h 04m

£434

Flights are sorted by cheapest return flights first.

Deals found on 20/7

Showing 1-10 of 19 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

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

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £553). Flying from London Heathrow Airport to Knoxville in December is currently the most expensive (average of £1,057). 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 £791 and £982 in August.
The cheapest return price found within the last 5 days was £568 on Scandinavian Airlines (31 Aug–7 Sept).

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 23 July 2026.
Read reviews from past customers who have flown with Virgin Atlantic,United Airlines, 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.
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Crew

8.1

Food

6.9

Comfort

7.3

Boarding

7.7

Overall

7.5

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
694 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Crew

8.1

Food

6.9

Comfort

7.3

Boarding

7.7

Overall

7.5

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
United Airlines
7.4
Good
10,026 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Crew

8.1

Food

6.9

Comfort

7.3

Boarding

7.7

Overall

7.5

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Lufthansa
6.8
Okay
8,158 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Crew

8.1

Food

6.9

Comfort

7.3

Boarding

7.7

Overall

7.5

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
British Airways
6.7
Okay
8,129 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Crew

8.1

Food

6.9

Comfort

7.3

Boarding

7.7

Overall

7.5

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

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 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 17h 13m. Your travel time can differ by up to 15h 31m. 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 £371, 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 £458 and £468, respectively. These flights start at 50% 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £553). Flying from London Heathrow Airport to Knoxville in December is currently the most expensive (average of £1,057). 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 4 airlines flying from Heathrow to Knoxville

Discover the top 4 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 23 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£371Average£774FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£458Average£787FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£468Average£621FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£478Average£731FlexibilityNo cancel feeOn-time70%
Search British Airways 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.