$439+ 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LHR
Sep 3 — Sep 101
Round-trip
1 adult, Economy
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Find cheap flights from Knoxville to Heathrow with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Knoxville to Heathrow
Cheapest
Best
Last-minute
One-way
Cheapest flights from Knoxville to HeathrowExplore 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 August 4, 2026.
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 August 4, 2026.
This United Airlines deal was found by Cheapflights users on 7/30. 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 11/23:45 pm -
1 stop12h 25m
Wed 11/46:50 am -
2 stops17h 46m
Deal found 7/30![United Airlines logo]()
$774
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/283:45 pm -
2 stops17h 15m
Wed 11/411:10 am -
2 stops17h 49m
Deal found 8/3![Lufthansa logo]()
$867
This Iberia deal was found by Cheapflights users on 8/3. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/284:42 pm -
1 stop11h 53m
Wed 11/46:15 am -
2 stops22h 32m
Deal found 8/3![Iberia logo]()
$880
This Iberia deal was found by Cheapflights users on 8/4. 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.
Wed 10/2111:35 am -
1 stop18h 15m
Wed 10/287:35 am -
2 stops20h 24m
Deal found 8/4![Iberia logo]()
$882
This Delta deal was found by Cheapflights users on 8/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/132:38 pm -
1 stop15h 42m
Fri 10/238:40 am -
2 stops16h 02m
Deal found 8/1![Delta logo]()
$885
This United Airlines deal was found by Cheapflights users on 8/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:45 am -
2 stops17h 50m
Wed 10/286:50 am -
2 stops16h 46m
Deal found 8/4![United Airlines logo]()
$886
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sat 9/267:25 pm -
2 stops30h 05m
Tue 10/66:50 am -
2 stops18h 29m
Deal found 7/31![United Airlines logo]()
$887
This Delta deal was found by Cheapflights users on 8/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/132:38 pm -
2 stops14h 12m
Thu 10/229:55 am -
2 stops15h 13m
Deal found 8/1![Delta logo]()
$889
Best flights from Knoxville to HeathrowDiscover carefully curated flight deals from Knoxville to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 4, 2026.
Discover carefully curated flight deals from Knoxville to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 4, 2026.
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/23:45 pm -
1 stop12h 25m
Wed 11/46:50 am -
2 stops17h 46m
Deal found 8/1![United Airlines logo]()
$774
This Delta deal was found by Cheapflights users on 8/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:23 pm -
2 stops13h 42m
Fri 10/238:40 am -
2 stops17h 57m
Deal found 8/1![Delta logo]()
$889
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sat 9/267:25 pm -
1 stop30h 30m
Tue 10/66:50 am -
2 stops18h 29m
Deal found 7/31![United Airlines logo]()
$889
This Delta deal was found by Cheapflights users on 7/31. 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.
Sun 12/1312:34 pm -
1 stop12h 51m
Thu 12/176:20 am -
2 stops16h 39m
Deal found 7/31![Delta logo]()
$957
This United Airlines deal was found by Cheapflights users on 7/30. 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 11/237:35 pm -
1 stop10h 15m
Mon 11/3012:05 pm -
2 stops50h 55m
Deal found 7/30![United Airlines logo]()
$919
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:26 am -
1 stop15h 49m
Mon 10/129:55 am -
2 stops15h 13m
Deal found 8/4![Delta logo]()
$986
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/81:59 pm -
1 stop14h 01m
Mon 9/1411:05 am -
2 stops34h 53m
Deal found 8/1![United Airlines logo]()
$977
Last-minute flights from Knoxville to HeathrowDiscover last-minute flight deals from Knoxville to Heathrow. Data last updated August 4, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Heathrow. Data last updated August 4, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/29:45 am -
1 stop16h 10m
Wed 9/96:50 am -
2 stops15h 08m
Deal found 7/31![United Airlines logo]()
$962
This Iberia deal was found by Cheapflights users on 7/31. 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 9/141:22 pm -
1 stop16h 28m
Wed 9/236:15 am -
2 stops18h 28m
Deal found 7/31![Iberia logo]()
$958
This Justfly.com deal was found by Cheapflights users on 8/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:06 pm -
1 stop10h 19m
Sun 9/279:45 pm -
2 stops27h 16m
Deal found 8/2![British Airways logo]()
$956
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/239:45 am -
1 stop16h 10m
Sat 10/106:50 am -
2 stops32h 47m
Deal found 7/31![United Airlines logo]()
$939
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sat 9/267:25 pm -
2 stops30h 05m
Tue 10/66:50 am -
2 stops18h 29m
Deal found 7/31![United Airlines logo]()
$887
This oojo deal was found by Cheapflights users on 7/31. 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.
Sat 9/264:48 pm -
1 stop33h 02m
Tue 10/69:15 am -
1 stop13h 20m
Deal found 7/31![British Airways logo]()
$917
One-way flights from Knoxville to HeathrowSearch for one-way flight options from Knoxville to Heathrow. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
Search for one-way flight options from Knoxville to Heathrow. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:15 am -
3 stops48h 00m
Deal found 8/2![Multiple Airlines logo]()
$439
This Expedia deal was found by Cheapflights users on 8/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:26 am -
1 stop18h 44m
Deal found 8/2![Virgin Atlantic logo]()
$502
This Mytrip deal was found by Cheapflights users on 8/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:45 am -
2 stops19h 45m
Deal found 8/2![Air Canada logo]()
$512
This CheapOair deal was found by Cheapflights users on 8/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:45 am -
2 stops19h 45m
Deal found 8/1![Air Canada logo]()
$517
This Ovago deal was found by Cheapflights users on 8/1. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:00 am -
1 stop18h 45m
Deal found 8/1![SWISS logo]()
$553
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/49:44 pm -
3 stops33h 11m
Deal found 8/1![Multiple Airlines logo]()
$577
This business-class.com deal was found by Cheapflights users on 8/2. 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 business-class.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:42 am -
1 stop15h 03m
Deal found 8/2![Lufthansa logo]()
$3,708
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 August 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $774 (United Airlines) |
One-way from | $439 (Kiwi.com) |
Popular in | June |
Cheapest in | April |
Average price | $936 |
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 August 4, 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
Cheapest round-trip
KnoxvilleLondon
TYS - LHR
TYSLHR
Knoxville McGhee Tyson
Mon 11/2
3:45 pm-9:10 am
1 stop12h 25m
London Heathrow
Wed 11/4
6:50 am-7:36 pm
2 stops17h 46m
$774
KnoxvilleLondon
TYS - LHR
TYSLHR
Knoxville McGhee Tyson
Tue 10/13
6:23 pm-1:05 pm
2 stops13h 42m
London Heathrow
Fri 10/23
8:40 am-9:37 pm
2 stops17h 57m
$889
KnoxvilleLondon
TYS - LHR
TYSLHR
Knoxville McGhee Tyson
Sat 9/26
7:25 pm-6:55 am
1 stop30h 30m
London Heathrow
Tue 10/6
6:50 am-8:19 pm
2 stops18h 29m
$889
KnoxvilleLondon
TYS - LHR
TYSLHR
Knoxville McGhee Tyson
Mon 11/23
7:35 pm-10:50 am
1 stop10h 15m
London Heathrow
Mon 11/30
12:05 pm-10:00 am
2 stops50h 55m
$919
Quickest round-trip
KnoxvilleLondon
TYS - LHR
TYSLHR
Knoxville McGhee Tyson
Sun 12/13
12:34 pm-6:25 am
1 stop12h 51m
London Heathrow
Thu 12/17
6:20 am-5:59 pm
2 stops16h 39m
$957
KnoxvilleLondon
TYS - LHR
TYSLHR
Knoxville McGhee Tyson
Tue 9/8
1:59 pm-9:00 am
1 stop14h 01m
London Heathrow
Mon 9/14
11:05 am-4:58 pm
2 stops34h 53m
$977
KnoxvilleLondon
TYS - LHR
TYSLHR
Knoxville McGhee Tyson
Fri 10/2
10:26 am-7:15 am
1 stop15h 49m
London Heathrow
Mon 10/12
9:55 am-8:08 pm
2 stops15h 13m
$986
Cheapest one-way
KnoxvilleLondon
TYS - LHR
TYSLHR
Knoxville McGhee Tyson
Thu 10/8
6:15 am-11:15 am
3 stops48h 00m
$439
Quickest one-way
KnoxvilleLondon
TYS - LHR
TYSLHR
Knoxville McGhee Tyson
Thu 10/8
7:26 am-7:10 am
1 stop18h 44m
$502
KnoxvilleLondon
TYS - LHR
TYSLHR
Knoxville McGhee Tyson
Fri 9/4
7:00 am-6:45 am
1 stop18h 45m
$553
Showing 1-10 of 11 resultsSorted by cheapest first
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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
TYS-LHR
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, April is the cheapest month in which you can book a flight from Knoxville to London Heathrow Airport (average of $841). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of $1,633). 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?
Airfare is below average for this route at the moment.
Knoxville to London Heathrow Airport flights typically cost between $820 and $1,198 in November.The cheapest round-trip price found within the last 5 days was $774 on United Airlines (Nov 2-Nov 4).
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 August 4, 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.
Food
7.2
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
Traveling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsIlford
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Eastleigh
Southend-on-Sea
Watford
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Browse other Knoxville and Heathrow flight options. Last updated on August 4, 2026.
Other flights from Knoxville
Browse through other flights departing from Knoxville. Flights are based on user searches made on Cheapflights and were last updated on August 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 August 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$572 | Average$1,481 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$624 | Average$1,152 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$674 | Average$1,152 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$677 | Average$1,063 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$734 | Average$882 | FlexibilityNo cancel fee | On-time70% |