Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Knoxville from £404

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
10 juil. — 17 juil.1
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 10 juin 2026.

jeu. 10/911:30
LHR
-
TYS
2 stops17h 29m
Lufthansa
jeu. 17/919:20
TYS
-
LHR
1 stop30h 35m
Lufthansa
Deal found 9/6£641
sam. 21/1109:30
LHR
-
TYS
2 stops19h 07m
Lufthansa
ven. 27/1117:39
TYS
-
LHR
1 stop31h 16m
Lufthansa
Deal found 7/6£645
jeu. 10/907:25
LHR
-
TYS
2 stops20h 24m
United Airlines
jeu. 17/905:45
TYS
-
LHR
2 stops19h 45m
United Airlines
Deal found 9/6£647
dim. 22/1111:10
LHR
-
TYS
2 stops17h 27m
United Airlines
mar. 1/1214:20
TYS
-
LHR
2 stops13h 05m
United Airlines
Deal found 6/6£649
dim. 22/1112:05
LHR
-
TYS
1 stop12h 12m
Lufthansa
mar. 1/1214:00
TYS
-
LHR
1 stop12h 55m
Lufthansa
Deal found 10/6£668
lun. 23/1116:10
LHR
-
TYS
2 stops25h 49m
British Airways
mar. 1/1216:15
TYS
-
LHR
1 stop10h 05m
British Airways
Deal found 6/6£669
ven. 10/706:30
LHR
-
TYS
2 stops22h 24m
Lufthansa
sam. 18/713:35
TYS
-
LHR
1 stop12h 20m
Lufthansa
Deal found 6/6£670
mar. 24/1106:05
LHR
-
TYS
2 stops16h 56m
British Airways
mer. 2/1214:58
TYS
-
LHR
1 stop10h 57m
British Airways
Deal found 6/6£671
jeu. 25/606:30
LHR
-
TYS
2 stops19h 04m
Lufthansa
jeu. 16/713:54
TYS
-
LHR
1 stop11h 51m
Lufthansa
Deal found 9/6£672

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 10 juin 2026.

Round-trip from

£641

One-way from

£404

Popular in

December

Cheapest in

September

Average price

£824
Lufthansa
  • Lufthansa
  • 10/9-17/9
  • 3 total stops
  • 48h 04m total
  • London to Knoxville
Search Deals
15/9
  • 15/9
  • 2 total stops
  • 44h 51m total
  • London to Knoxville
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£72 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 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 10 juin 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

jeu. 10/9

07:25-22:49

2 stops20h 24m

Knoxville McGhee Tyson

jeu. 17/9

05:45-06:30

2 stops19h 45m

£647

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

dim. 22/11

13:00-13:18

2 stops29h 18m

Knoxville McGhee Tyson

mar. 1/12

19:35-10:50

1 stop10h 15m

£663

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

mar. 24/11

06:05-18:01

2 stops16h 56m

Knoxville McGhee Tyson

mar. 1/12

16:15-09:15

1 stop12h 00m

£671

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

ven. 10/7

08:40-20:34

2 stops16h 54m

Knoxville McGhee Tyson

ven. 17/7

15:25-07:55

1 stop35h 30m

£674

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

ven. 10/7

08:40-20:34

2 stops16h 54m

Knoxville McGhee Tyson

sam. 18/7

10:18-05:55

2 stops14h 37m

£675

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

mar. 24/11

07:30-00:14

2 stops21h 44m

Knoxville McGhee Tyson

dim. 29/11

19:35-06:40

1 stop30h 05m

£689
Fastest return journey

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

sam. 21/11

07:40-16:49

1 stop14h 09m

Knoxville McGhee Tyson

lun. 30/11

14:00-05:55

1 stop10h 55m

£693

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

sam. 21/11

07:40-16:49

1 stop14h 09m

Knoxville McGhee Tyson

mar. 1/12

14:00-05:55

1 stop10h 55m

£693

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

mer. 8/7

06:50-17:00

2 stops15h 10m

Knoxville McGhee Tyson

mer. 15/7

13:54-09:20

2 stops14h 26m

£695

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

dim. 22/11

06:30-17:18

2 stops15h 48m

Knoxville McGhee Tyson

mar. 1/12

14:30-08:45

2 stops13h 15m

£734

Flights are sorted by cheapest return flights first.

Deals found on 6/6

Showing 1-10 of 17 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?

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 65 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £517). Flying from London Heathrow Airport to Knoxville in December is currently the most expensive (average of £1,039). 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 10 juin 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
689 reviews
Check prices

Entertainment

7.5

Comfort

7.3

Boarding

7.7

Food

6.9

Overall

7.5

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
689 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Entertainment

7.5

Comfort

7.3

Boarding

7.7

Food

6.9

Overall

7.5

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
9,801 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Entertainment

7.5

Comfort

7.3

Boarding

7.7

Food

6.9

Overall

7.5

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
8,052 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Entertainment

7.5

Comfort

7.3

Boarding

7.7

Food

6.9

Overall

7.5

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
8,035 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Entertainment

7.5

Comfort

7.3

Boarding

7.7

Food

6.9

Overall

7.5

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 can get you from London Heathrow Airport to Knoxville in just under 20h 24m. Your travel time can differ by up to . The distance from London Heathrow Airport to Knoxville is about 4076 mi.

  • What are the cheapest airlines flying from London Heathrow Airport to Knoxville round-trip?

    Currently priced at £458, 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 £468 and £474, 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 £517). Flying from London Heathrow Airport to Knoxville in December is currently the most expensive (average of £1,039). 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 10 juin 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£458Average£776FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£468Average£621FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£474Average£681FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£509Average£774FlexibilityNo 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.

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.