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Cheap flights from London Heathrow Airport to Knoxville from £389

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
15 Sep — 22 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
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 16 August 2026.

Sun 22/1108:00 -
1 stop12h 52m
Sun 29/1113:51 -
1 stop11h 04m
Deal found 14/8£570
Mon 23/1106:40 -
2 stops20h 42m
Mon 30/1116:03 -
2 stops18h 57m
Deal found 15/8£590
Thu 3/1218:40 -
2 stops34h 17m
Mon 7/1218:09 -
2 stops16h 51m
Deal found 13/8£599
Mon 28/907:45 -
2 stops18h 04m
Mon 5/1012:05 -
1 stop14h 40m
Deal found 14/8£664
Mon 23/1116:20 -
1 stop24h 10m
Mon 30/1109:45 -
1 stop15h 55m
Deal found 15/8£666
Tue 8/909:30 -
2 stops19h 29m
Tue 15/909:45 -
1 stop16h 10m
Deal found 11/8£668
Mon 14/908:30 -
2 stops19h 19m
Mon 28/919:25 -
2 stops17h 15m
Deal found 11/8£672
Tue 1/918:00 -
2 stops24h 18m
Mon 14/909:45 -
2 stops15h 10m
Deal found 14/8£676

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 16 August 2026.

Round-trip from

£570

One-way from

£389

Popular in

December

Cheapest in

March

Average price

£826
United Airlines
  • United Airlines
  • 22/11-29/11
  • 2 total stops
  • 23h 56m total
  • London to Knoxville
Search Deals
29/9
  • 29/9
  • 2 total stops
  • 33h 16m total
  • London to Knoxville
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£66 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

 
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 16 August 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 London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Mon 8/2

06:40-23:46

2 stops22h 06m

Knoxville McGhee Tyson

Mon 15/2

17:57-18:30

2 stops19h 33m

£590

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

£600

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Tue 8/9

08:45-20:24

2 stops16h 39m

Knoxville McGhee Tyson

Tue 15/9

10:45-06:55

2 stops15h 10m

£682

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Wed 16/9

12:15-22:42

1 stop15h 27m

Knoxville McGhee Tyson

Sun 20/9

20:15-10:50

1 stop33h 35m

£686

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Sun 22/11

13:45-23:59

2 stops39h 14m

Knoxville McGhee Tyson

Mon 30/11

16:30-10:50

2 stops13h 20m

£690

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

14:00-05:55

1 stop10h 55m

£695

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Tue 29/9

16:00-20:45

1 stop33h 45m

Knoxville McGhee Tyson

Tue 6/10

16:16-09:20

1 stop12h 04m

£698
Fastest return journey

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Mon 28/9

16:40-23:59

1 stop12h 19m

Knoxville McGhee Tyson

Mon 5/10

18:03-11:55

1 stop12h 52m

£709
Cheapest one-way

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Sun 18/10

21:25-14:02

2 stops45h 37m

£396

LondonKnoxville

LHR London Heathrow - TYS Knoxville McGhee Tyson

LHRTYS

London Heathrow

Mon 28/9

20:25-14:42

2 stops47h 17m

£422

Flights are sorted by cheapest return flights first.

Deals found on 12/8

Showing 1-10 of 15 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, 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 below average for this route at the moment.

London Heathrow Airport to Knoxville flights typically cost between £790 and £915 in November.
The cheapest return price found within the last 5 days was £570 on United Airlines (22 Nov–29 Nov).

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 16 August 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

Overall

7.5

Comfort

7.3

Boarding

7.7

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

Overall

7.5

Comfort

7.3

Boarding

7.7

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
10,104 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.5

Comfort

7.3

Boarding

7.7

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
8,195 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.5

Comfort

7.3

Boarding

7.7

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
8,167 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.5

Comfort

7.3

Boarding

7.7

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 and United Airlines can get you from London Heathrow Airport to Knoxville in just under 16h 39m. Your travel time can differ by up to 5h 27m. 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 £462, 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

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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 16 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£367Average£824FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£453Average£790FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£462Average£614FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£474Average£789FlexibilityNo 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.

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