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$347+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LHR
Jun 4 — Jun 111
Thu 6/4
Thu 6/11
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 May 5, 2026.

This Travelocity deal was found by Cheapflights users on 5/4. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/304:00 pm
TYS
-
LHR
2 stops19h 00m
Scandinavian Airlines
Tue 12/87:30 pm
LHR
-
TYS
2 stops31h 15m
Scandinavian Airlines
Deal found 5/4$882
This KAYAK deal was found by Cheapflights users on 5/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:00 pm
TYS
-
LHR
2 stops21h 40m
Scandinavian Airlines
Fri 11/66:40 am
LHR
-
TYS
2 stops22h 06m
Scandinavian Airlines
Deal found 5/3$894
This Iberia deal was found by Cheapflights users on 5/4. 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 9/143:05 pm
TYS
-
LHR
1 stop14h 45m
Iberia
Wed 9/236:15 am
LHR
-
TYS
2 stops20h 00m
Iberia
Deal found 5/4$901
This FlightHub deal was found by Cheapflights users on 5/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:12 pm
TYS
-
LHR
1 stop13h 28m
British Airways
Thu 11/58:25 am
LHR
-
TYS
2 stops17h 39m
British Airways
Deal found 5/3$922
This KAYAK deal was found by Cheapflights users on 5/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:57 pm
TYS
-
LHR
2 stops17h 03m
Scandinavian Airlines
Sat 12/125:00 pm
LHR
-
TYS
2 stops33h 45m
Scandinavian Airlines
Deal found 5/1$923
This FlightHub deal was found by Cheapflights users on 5/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:14 pm
TYS
-
LHR
1 stop12h 01m
Multiple Airlines
Wed 9/27:50 am
LHR
-
TYS
2 stops15h 59m
Multiple Airlines
Deal found 5/4$928
This oojo deal was found by Cheapflights users on 5/5. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:34 am
TYS
-
LHR
1 stop14h 16m
British Airways
Wed 9/29:15 am
LHR
-
TYS
1 stop13h 57m
British Airways
Deal found 5/5$930
This oojo deal was found by Cheapflights users on 5/5. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:04 pm
TYS
-
LHR
1 stop12h 46m
British Airways
Wed 9/239:15 am
LHR
-
TYS
1 stop11h 44m
British Airways
Deal found 5/5$931
This American Airlines deal was found by Cheapflights users on 5/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:05 pm
TYS
-
LHR
1 stop13h 45m
American Airlines
Fri 8/212:45 pm
LHR
-
TYS
1 stop12h 23m
American Airlines
Deal found 5/4$935

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 May 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$860
(United Airlines)

One-way from

$347
(oojo)

Popular in

June

Cheapest in

January

Average price

$1,191
Provider with most accurate pricing for Knoxville McGhee Tyson-London Heathrow flight deals.
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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 ($277 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 5, 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

Wed 9/2

1:46 pm-9:00 am

1 stop14h 14m

London Heathrow

Wed 9/9

10:05 am-9:54 pm

1 stop16h 49m

$941

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 9/2

10:00 am-10:00 am

2 stops19h 00m

London Heathrow

Wed 9/9

6:50 am-4:59 pm

2 stops15h 09m

$969

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Mon 9/14

5:15 pm-12:05 pm

2 stops13h 50m

London Heathrow

Wed 9/23

9:55 am-9:28 pm

2 stops16h 33m

$972
Quickest round-trip

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Tue 7/7

7:19 pm-10:40 am

1 stop10h 21m

London Heathrow

Thu 7/16

8:00 am-8:39 pm

1 stop17h 39m

$1,127

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 5/20

9:50 am-10:00 am

2 stops19h 10m

London Heathrow

Fri 5/29

2:05 pm-4:51 pm

2 stops31h 46m

$1,130

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Fri 7/17

7:19 pm-6:55 am

1 stop30h 36m

London Heathrow

Fri 7/31

8:00 am-5:00 pm

1 stop14h 00m

$1,136

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 7/1

10:00 am-10:00 am

2 stops19h 00m

London Heathrow

Tue 7/7

2:05 pm-2:27 pm

2 stops29h 22m

$1,148

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Fri 7/24

8:20 am-6:45 am

1 stop17h 25m

London Heathrow

Sat 8/15

8:00 am-4:59 pm

1 stop13h 59m

$1,152

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 7/8

10:00 am-10:40 am

1 stop19h 40m

London Heathrow

Sat 7/18

11:05 am-10:34 pm

1 stop16h 29m

$1,191
Cheapest one-way
Quickest one-way

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Tue 9/15

8:39 pm-12:10 pm

1 stop10h 31m

$347

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 19 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 May.
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

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

To ensure you get the cheapest price possible for a flight from Knoxville to London Heathrow Airport, you should look to book at least 84 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Knoxville to London Heathrow Airport (average of $668). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of $1,503). 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 May 5, 2026.
See what other customers who have flown with Delta,United Airlines, andVirgin Atlantic 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
7.9
Good
8,460 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
Delta
7.9
Good
8,460 reviews
Delta
7.9
Good
8,460 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
United Airlines
7.4
Good
9,683 reviews
Delta
7.9
Good
8,460 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
Virgin Atlantic
7.4
Good
688 reviews
Delta
7.9
Good
8,460 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
American Airlines
7.1
Good
11,670 reviews
Delta
7.9
Good
8,460 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
British Airways
6.7
Okay
7,944 reviews
Delta
7.9
Good
8,460 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.

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 13h 50m. Finnair provides one of the quickest options available for as low as $972. 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 40% 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, January is the cheapest month in which you can book a flight from Knoxville to London Heathrow Airport (average of $668). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of $1,503). 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
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
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 May 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$572Average$1,152FlexibilityNo cancel feeOn-time72%
DeltaCheapest$624Average$939FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$674Average$1,008FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$677Average$956FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$700Average$882FlexibilityNo cancel feeOn-time70%

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