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$327+ Cheap flights from Knoxville (TYS) to Heathrow (LHR)

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LHR
Jul 19 — Jul 261
Sun 7/19
Sun 7/26
1 adult, Economy
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Cheap flight deals from Knoxville to Heathrow

Cheapest flights from Knoxville to Heathrow
Explore the most affordable flight options available from Knoxville to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 19, 2026.

This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:26 am
TYS
-
LHR
1 stop18h 29m
United Airlines
Wed 11/256:50 am
LHR
-
TYS
2 stops14h 59m
United Airlines
Deal found 6/18$775
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:39 pm
TYS
-
LHR
1 stop33h 16m
United Airlines
Wed 11/256:50 am
LHR
-
TYS
2 stops22h 24m
United Airlines
Deal found 6/18$780
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:20 pm
TYS
-
LHR
2 stops14h 45m
United Airlines
Fri 11/2710:00 am
LHR
-
TYS
1 stop18h 19m
United Airlines
Deal found 6/18$797
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/221:55 pm
TYS
-
LHR
1 stop13h 35m
United Airlines
Sat 10/246:50 am
LHR
-
TYS
2 stops18h 29m
United Airlines
Deal found 6/17$875
This Iberia deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:15 pm
TYS
-
LHR
1 stop11h 00m
Iberia
Wed 9/236:15 am
LHR
-
TYS
2 stops21h 27m
Iberia
Deal found 6/16$900
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3011:30 am
TYS
-
LHR
1 stop16h 15m
Delta
Wed 12/911:45 am
LHR
-
TYS
2 stops14h 49m
Delta
Deal found 6/16$904
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1411:45 am
TYS
-
LHR
2 stops14h 00m
Delta
Wed 9/236:30 am
LHR
-
TYS
2 stops15h 08m
Delta
Deal found 6/14$908
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:45 am
TYS
-
LHR
2 stops19h 35m
United Airlines
Thu 11/266:50 am
LHR
-
TYS
2 stops14h 59m
United Airlines
Deal found 6/18$909
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:20 pm
TYS
-
LHR
1 stop33h 10m
United Airlines
Thu 11/266:50 am
LHR
-
TYS
2 stops14h 59m
United Airlines
Deal found 6/18$910
This Air Canada deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:45 am
TYS
-
LHR
2 stops19h 45m
Air Canada
Wed 11/251:00 pm
LHR
-
TYS
2 stops30h 42m
Air Canada
Deal found 6/18$913

Find flight deals from Knoxville to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Heathrow (LHR). 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 June 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$775
(United Airlines)

One-way from

$327
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,662
Provider with most accurate pricing for Knoxville McGhee Tyson-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-London Heathrow flights.
Search Deals
From Knoxville McGhee Tyson to London Heathrow
Search Deals
One-way flight from Knoxville McGhee Tyson to London Heathrow
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($302 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Heathrow 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 2,558,603 searches. Data last updated June 19, 2026.
Use the filters below to find and compare flights from Knoxville to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 11/30

5:57 pm-11:40 am

1 stop12h 43m

London Heathrow

Wed 12/9

12:30 pm-11:46 pm

1 stop16h 16m

$933
Quickest round-trip

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 11/30

5:15 pm-8:45 am

1 stop10h 30m

London Heathrow

Fri 12/11

12:30 pm-8:40 pm

1 stop13h 10m

$933

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 11/30

2:30 pm-8:45 am

2 stops13h 15m

London Heathrow

Fri 12/11

6:30 am-6:38 pm

2 stops17h 08m

$943

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Tue 12/1

7:35 pm-10:50 am

1 stop10h 15m

London Heathrow

Sat 12/12

6:35 am-7:17 pm

2 stops17h 42m

$955

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 8/17

4:38 pm-11:20 am

1 stop13h 42m

London Heathrow

Thu 8/27

11:45 am-11:52 pm

2 stops17h 07m

$964

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 8/17

5:45 am-6:55 am

1 stop20h 10m

London Heathrow

Thu 8/27

6:50 am-4:58 pm

2 stops15h 08m

$964

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Tue 9/8

1:35 pm-6:55 am

1 stop12h 20m

London Heathrow

Mon 9/14

5:50 pm-4:58 pm

2 stops28h 08m

$977

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 8/3

12:10 pm-7:45 am

1 stop14h 35m

London Heathrow

Wed 8/19

8:30 am-8:24 pm

2 stops16h 54m

$1,001
Cheapest one-way

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Sat 11/28

5:52 pm-8:35 am

1 stop33h 43m

$358

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Fri 10/2

5:45 am-7:15 am

2 stops20h 30m

$398

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Compare providers for flights from Knoxville to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Heathrow in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Knoxville to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Knoxville with our price prediction graph.
Estimated round-trip 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 Knoxville to London Heathrow Airport

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

Currently, November is the cheapest month in which you can book a flight from Knoxville to London Heathrow Airport (average of $798). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of $1,662). 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 to fly round-trip from Knoxville to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated June 19, 2026.
See what other customers who have flown with Delta,Virgin Atlantic, andUnited Airlines from Knoxville to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,416 reviews

Food

7.2

Crew

8.5

Overall

7.8

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,416 reviews
Delta
7.8
Good
8,416 reviews

Food

7.2

Crew

8.5

Overall

7.8

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Virgin Atlantic
7.5
Good
690 reviews
Delta
7.8
Good
8,416 reviews

Food

7.2

Crew

8.5

Overall

7.8

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,861 reviews
Delta
7.8
Good
8,416 reviews

Food

7.2

Crew

8.5

Overall

7.8

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,699 reviews
Delta
7.8
Good
8,416 reviews

Food

7.2

Crew

8.5

Overall

7.8

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
British Airways
6.7
Okay
8,055 reviews
Delta
7.8
Good
8,416 reviews

Food

7.2

Crew

8.5

Overall

7.8

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Heathrow. 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 from for flights from Knoxville to London Heathrow?

    Knoxville McGhee Tyson (TYS) is the airport you will fly out of if you book a flight from Knoxville to London Heathrow. You should not have trouble finding flights to London Heathrow from McGhee Tyson; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Knoxville airport to London Heathrow. It is only a 11.3 mi journey to McGhee Tyson (TYS) from Knoxville’s city center.

  • How long is the flight from Knoxville to London Heathrow Airport?

    A quick flight from Knoxville to London Heathrow Airport can take about 10h 30m. Virgin Atlantic provides one of the quickest options available for as low as $933. There are 4076 mi between Knoxville and London Heathrow Airport. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Knoxville to London Heathrow Airport round-trip from $572. Other airlines that can offer you cheap pricing are Delta, from $624, and American Airlines, from $674. Users have found that Virgin Atlantic is 44% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Knoxville to Heathrow 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 Knoxville to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Knoxville to London Heathrow Airport (average of $798). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of $1,662). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Wembley
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Knoxville to Heathrow

Discover the top 5 airlines that operate flights from Knoxville to Heathrow. 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 2,558,603 searches. Data last updated June 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$572Average$1,292FlexibilityNo cancel feeOn-time72%
DeltaCheapest$624Average$1,081FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$674Average$1,146FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$677Average$989FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$734Average$911FlexibilityNo cancel feeOn-time70%

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