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Cheap flights from London Heathrow Airport to Knoxville from £412

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 13/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
20 Jul — 27 Jul1
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 20 June 2026.

Tue 6/1010:50
LHR
-
TYS
2 stops18h 09m
Lufthansa
Fri 23/1019:25
TYS
-
LHR
1 stop10h 15m
Lufthansa
Deal found 20/6£635
Sun 22/1106:30
LHR
-
TYS
2 stops18h 06m
Lufthansa
Tue 1/1214:00
TYS
-
LHR
1 stop10h 55m
Lufthansa
Deal found 19/6£642
Tue 29/906:50
LHR
-
TYS
2 stops15h 18m
United Airlines
Sat 3/1013:35
TYS
-
LHR
2 stops15h 50m
United Airlines
Deal found 19/6£651
Wed 1/718:05
LHR
-
TYS
2 stops26h 37m
Finnair
Wed 15/718:10
TYS
-
LHR
1 stop13h 00m
Finnair
Deal found 15/6£658

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 20 June 2026.

Round-trip from

£642

One-way from

£412

Popular in

December

Cheapest in

September

Average price

£849
Lufthansa
  • Lufthansa
  • 22/11-1/12
  • 3 total stops
  • 29h 01m total
  • London to Knoxville
Search Deals
13/10
  • 13/10
  • 3 total stops
  • 33h 16m 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 June 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 20 June 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
Fastest return journey

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 29/9

06:50-17:08

2 stops15h 18m

Knoxville McGhee Tyson

Sat 3/10

13:35-10:25

2 stops15h 50m

£651

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sun 22/11

07:30-19:17

2 stops16h 47m

Knoxville McGhee Tyson

Tue 1/12

14:00-12:50

2 stops17h 50m

£661

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 4/7

08:45-20:34

2 stops16h 49m

Knoxville McGhee Tyson

Fri 10/7

10:00-06:55

1 stop15h 55m

£684

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 7/7

10:50-23:54

2 stops18h 04m

Knoxville McGhee Tyson

Tue 21/7

17:45-11:55

1 stop13h 10m

£688

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 3/7

07:30-20:34

2 stops18h 04m

Knoxville McGhee Tyson

Mon 13/7

12:10-11:35

1 stop18h 25m

£688
Cheapest one-way

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 13/10

08:45-13:01

3 stops33h 16m

£412

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 13/10

12:30-23:30

1 stop16h 00m

£492

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 13/10

09:55-21:45

2 stops16h 50m

£495

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Thu 15/10

09:45-21:04

1 stop16h 19m

£533

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 30/6

21:25-17:18

3 stops48h 53m

£623

Flights are sorted by cheapest return flights first.

Deals found on 17/6

Showing 1-10 of 13 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
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 £527). Flying from London Heathrow Airport to Knoxville in December is currently the most expensive (average of £1,070). 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 20 June 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
690 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.5

Entertainment

7.5

Food

6.9

Crew

8.1

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
690 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.5

Entertainment

7.5

Food

6.9

Crew

8.1

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
9,864 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.5

Entertainment

7.5

Food

6.9

Crew

8.1

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
8,082 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.5

Entertainment

7.5

Food

6.9

Crew

8.1

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
8,055 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.5

Entertainment

7.5

Food

6.9

Crew

8.1

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?

    United Airlines and Lufthansa can get you from London Heathrow Airport to Knoxville in just under 15h 18m. Your travel time can differ by up to 1h 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 £464, 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 £480, respectively. These flights start at 39% 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 £527). Flying from London Heathrow Airport to Knoxville in December is currently the most expensive (average of £1,070). 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 20 June 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£464Average£796FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£474Average£629FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£480Average£703FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£520Average£858FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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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