Find flights
When to book
Airlines
FAQs

Cheap flights from London 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.
LON — TYS
11 Jul — 18 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Knoxville

Enter your travel dates to find the best prices.

Cheapest flights from London to Knoxville
Explore the most affordable flight options available from London to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 June 2026.

Tue 16/614:00
LGW
-
TYS
1 stop33h 21m
Multiple Airlines
Tue 7/711:27
TYS
-
LGW
1 stop17h 33m
Multiple Airlines
Deal found 9/6£499
Fri 10/714:00
LGW
-
TYS
1 stop14h 33m
Multiple Airlines
Fri 17/719:20
TYS
-
LGW
1 stop33h 40m
Multiple Airlines
Deal found 10/6£609
Thu 25/612:40
LGW
-
TYS
2 stops33h 00m
Multiple Airlines
Thu 16/712:59
TYS
-
LGW
1 stop16h 01m
Multiple Airlines
Deal found 9/6£616
Thu 10/911:30
LHR
-
TYS
2 stops17h 29m
Lufthansa
Thu 17/919:20
TYS
-
LHR
1 stop30h 35m
Lufthansa
Deal found 9/6£640
Sat 21/1109:30
LHR
-
TYS
2 stops19h 07m
Lufthansa
Fri 27/1117:39
TYS
-
LHR
1 stop31h 16m
Lufthansa
Deal found 7/6£645
Thu 10/907:25
LHR
-
TYS
2 stops20h 24m
United Airlines
Thu 17/905:45
TYS
-
LHR
2 stops19h 45m
United Airlines
Deal found 9/6£646
Sun 22/1111:10
LHR
-
TYS
2 stops17h 27m
United Airlines
Tue 1/1214:20
TYS
-
LHR
2 stops13h 05m
United Airlines
Deal found 6/6£648
Sun 22/1112:05
LHR
-
TYS
1 stop12h 12m
Lufthansa
Tue 1/1214:00
TYS
-
LHR
1 stop12h 55m
Lufthansa
Deal found 10/6£667
Mon 23/1116:10
LHR
-
TYS
2 stops25h 49m
British Airways
Tue 1/1216:15
TYS
-
LHR
1 stop10h 05m
British Airways
Deal found 6/6£669
Fri 10/706:30
LHR
-
TYS
2 stops22h 24m
Lufthansa
Sat 18/713:35
TYS
-
LHR
1 stop12h 20m
Lufthansa
Deal found 6/6£669
Tue 24/1106:05
LHR
-
TYS
2 stops16h 56m
British Airways
Wed 2/1214:58
TYS
-
LHR
1 stop10h 57m
British Airways
Deal found 6/6£671
Thu 25/606:30
LHR
-
TYS
2 stops19h 04m
Lufthansa
Thu 16/713:54
TYS
-
LHR
1 stop11h 51m
Lufthansa
Deal found 9/6£672

Find flight deals from London to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 11 June 2026.

Round-trip from

£609

One-way from

£404

Popular in

March

Cheapest in

September

Average price

£741
10/7-17/7
  • 10/7-17/7
  • 2 total stops
  • 48h 13m 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. 9% potential increase in price (£59 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 London 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 11 June 2026.
Use the filters below to find and compare flights from London to Knoxville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Thu 10/9

07:25-22:49

2 stops20h 24m

Knoxville McGhee Tyson

Thu 17/9

05:45-06:30

2 stops19h 45m

£646

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sun 22/11

13:00-13:18

2 stops29h 18m

Knoxville McGhee Tyson

Tue 1/12

19:35-10:50

1 stop10h 15m

£663

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 24/11

06:05-18:01

2 stops16h 56m

Knoxville McGhee Tyson

Tue 1/12

16:15-09:15

1 stop12h 00m

£671

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 10/7

08:40-20:34

2 stops16h 54m

Knoxville McGhee Tyson

Fri 17/7

15:25-07:55

1 stop35h 30m

£673

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 10/7

08:40-20:34

2 stops16h 54m

Knoxville McGhee Tyson

Sat 18/7

10:18-05:55

2 stops14h 37m

£675

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 24/11

07:30-00:14

2 stops21h 44m

Knoxville McGhee Tyson

Sun 29/11

19:35-06:40

1 stop30h 05m

£688
Fastest return journey

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 21/11

07:40-16:49

1 stop14h 09m

Knoxville McGhee Tyson

Mon 30/11

14:00-05:55

1 stop10h 55m

£693

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 21/11

07:40-16:49

1 stop14h 09m

Knoxville McGhee Tyson

Tue 1/12

14:00-05:55

1 stop10h 55m

£693

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Wed 8/7

06:50-17:00

2 stops15h 10m

Knoxville McGhee Tyson

Wed 15/7

13:54-09:20

2 stops14h 26m

£694

LondonKnoxville

LCY - TYS

LCYTYS

London City

Wed 8/7

09:15-20:44

2 stops16h 29m

Knoxville McGhee Tyson

Wed 15/7

10:00-08:40

2 stops17h 40m

£701

Flights are sorted by cheapest return flights first.

Deals found on 6/6

Showing 1-10 of 40 resultsSorted by cheapest first
1
2
3
4

Best time to book a flight from London to Knoxville

Have a flexible travel schedule? Discover the best time to fly to Knoxville from London 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 to Knoxville

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

Currently, December is the cheapest month in which you can book a flight from London to Knoxville (average of £283). Flying from London to Knoxville in July is currently the most expensive (average of £594). 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 to Knoxville?

What’s the top stopover airport for flights from London to Knoxville?

Share of one-stop return flights from London to Knoxville chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Atlanta (ATL) – chosen by Cheapflights users on 34% of one-stop itineraries from London to Knoxville on Cheapflights.

What’s the cheapest stopover airport for flights from London to Knoxville?

Average return fare for one-stop flights from London to Knoxville, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Philadelphia (PHL) is the most affordable one-stop option, with an average return flight price of £513.

What’s the fastest stopover option from London to Knoxville?

Shortest average travel time for one-stop one-way flights from London to Knoxville, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Charlotte (CLT) have the shortest average one-way travel time for one-stop routes: 11h 57m.

Which airport typically offers the quickest stopover for flights from London to Knoxville?

Average stopover duration for one-stop one-way flights from London to Knoxville, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Charlotte (CLT) offer the fastest connection on this route, with an average stopover time of 1h 14m.

How far ahead should I book a flight from London to Knoxville?

The best time to book flights from London to Knoxville is 53 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 11 June 2026.
Read through reviews of airlines operating flights from London to Knoxville, such as Finnair,Virgin Atlantic, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.7
Good
1,405 reviews
Check prices

Boarding

7.7

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.7

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Finnair
7.7
Good
1,405 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Boarding

7.7

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.7

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Virgin Atlantic
7.5
Good
689 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Boarding

7.7

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.7

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
United Airlines
7.4
Good
9,808 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Boarding

7.7

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.7

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Lufthansa
6.8
Okay
8,053 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Boarding

7.7

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.7

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
British Airways
6.7
Okay
8,035 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Boarding

7.7

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.7

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.

Related info for your journey

Find useful and relevant information for your journey from London 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?

    If you book a flight to Knoxville from London, 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 to McGhee Tyson per day from 4 different airlines.

  • How long is the flight from London to Knoxville?

    There are many flights that can get you from London to Knoxville in 16h 29m. Fly via United Airlines, British Airways, or Lufthansa to get the fastest option. Airlines will cover a distance of 4095 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Flying on Lufthansa is currently your cheapest option to Knoxville, with prices starting at £457. Additional return tickets that might be worth considering are offered by United Airlines and British Airways, with the lowest prices starting at £468 and £474, respectively. Lufthansa is currently priced 37% below the average price you’ll pay for this route.

  • What are the most popular routes from London to Knoxville?

    The most popular flight routes from London to Knoxville are London Heathrow - Knoxville McGhee Tyson, London Gatwick - Knoxville McGhee Tyson and London City - Knoxville McGhee Tyson.

  • Can I find deals for flights from London to Knoxville that include hotel bookings?

    Yes. In addition to deals on London to Knoxville flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Knoxville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Knoxville.

  • Can I find deals for business class flights from London to Knoxville?

    Yes. Cheapflights offers flight deals from London 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 to Knoxville?

    Currently, December is the cheapest month in which you can book a flight from London to Knoxville (average of £283). Flying from London to Knoxville in July is currently the most expensive (average of £594). 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 London to Knoxville

Discover the top 4 airlines that operate flights from London 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 11 June 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£457Average£770FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£468Average£621FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£474Average£657FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£508Average£773FlexibilityNo 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 London to Knoxville?

Cheapflights helps you search for flights from London 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 London to Knoxville?

Cheapflights helps you find that perfect flight to Knoxville from London 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 London to Knoxville with no change fees?

Yes, we can. To see specific flights from London to Knoxville with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from London to Knoxville become cheaper?

Not ready to book yet? You can track prices for flights from London to Knoxville on Cheapflights with our Price Alert feature and get notified when better prices are available.

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.