$348+ Cheap flights from Knoxville (TYS) to Heathrow (LHR)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LHR
Oct 19 — Oct 261
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
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Best
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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 September 19, 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 September 19, 2026.
This Virgin Atlantic deal was found by Cheapflights users on 9/18. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:35 pm -
1 stop16h 05m
Tue 12/811:30 am -
2 stops15h 47m
Deal found 9/18![Virgin Atlantic logo]()
$753
This Virgin Atlantic deal was found by Cheapflights users on 9/16. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:26 am -
1 stop18h 39m
Wed 11/1111:30 am -
2 stops15h 42m
Deal found 9/16![Virgin Atlantic logo]()
$754
This Delta deal was found by Cheapflights users on 9/16. 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 11/27:26 am -
1 stop18h 39m
Wed 11/118:55 am -
2 stops18h 17m
Deal found 9/16![Delta logo]()
$757
This Delta deal was found by Cheapflights users on 9/14. 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.
Tue 10/135:18 pm -
2 stops14h 47m
Tue 10/209:55 am -
2 stops16h 42m
Deal found 9/14![Delta logo]()
$762
This Virgin Atlantic deal was found by Cheapflights users on 9/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:23 pm -
1 stop19h 52m
Thu 10/1512:25 pm -
1 stop15h 37m
Deal found 9/15![Virgin Atlantic logo]()
$763
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:35 am -
1 stop16h 50m
Fri 10/2311:15 am -
1 stop15h 53m
Deal found 9/17![Delta logo]()
$764
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 September 19, 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 September 19, 2026.
This Delta deal was found by Cheapflights users on 9/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:35 am -
1 stop16h 50m
Fri 10/2311:15 am -
1 stop15h 53m
Deal found 9/18![Delta logo]()
$764
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/711:20 am -
1 stop16h 50m
Sun 11/159:00 am -
2 stops19h 59m
Deal found 9/15![United Airlines logo]()
$865
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/118:47 am -
1 stop19h 13m
Tue 2/168:40 am -
2 stops17h 54m
Deal found 9/17![Delta logo]()
$816
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/214:00 pm -
1 stop10h 50m
Sun 2/2811:45 am -
2 stops17h 01m
Deal found 9/17![Delta logo]()
$816
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/34:01 pm -
1 stop10h 49m
Sat 12/126:20 am -
2 stops18h 40m
Deal found 9/17![Delta logo]()
$857
This Delta deal was found by Cheapflights users on 9/16. 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.
Sat 10/317:09 am -
1 stop19h 16m
Sat 11/710:50 am -
1 stop12h 57m
Deal found 9/16![Delta logo]()
$865
Last-minute flights from Knoxville to HeathrowDiscover last-minute flight deals from Knoxville to Heathrow. Data last updated September 19, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Heathrow. Data last updated September 19, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/14. 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 9/2110:26 am -
1 stop15h 49m
Mon 9/288:40 am -
2 stops16h 35m
Deal found 9/14![Delta logo]()
$808
This Virgin Atlantic deal was found by Cheapflights users on 9/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:25 pm -
1 stop13h 50m
Wed 9/309:20 am -
1 stop13h 08m
Deal found 9/15![Virgin Atlantic logo]()
$813
This Delta deal was found by Cheapflights users on 9/14. 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.
Tue 9/2911:46 am -
2 stops14h 29m
Tue 10/610:45 am -
1 stop15h 52m
Deal found 9/14![Delta logo]()
$770
This Virgin Atlantic deal was found by Cheapflights users on 9/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:23 pm -
1 stop19h 52m
Thu 10/1512:25 pm -
1 stop15h 37m
Deal found 9/15![Virgin Atlantic logo]()
$763
This Delta deal was found by Cheapflights users on 9/14. 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.
Tue 10/1311:45 am -
1 stop14h 25m
Tue 10/208:40 am -
2 stops17h 57m
Deal found 9/14![Delta logo]()
$758
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:35 am -
1 stop16h 50m
Fri 10/2311:15 am -
1 stop15h 53m
Deal found 9/17![Delta logo]()
$764
This Air France deal was found by Cheapflights users on 9/17. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:38 pm -
1 stop10h 47m
Thu 10/2211:15 am -
1 stop13h 53m
Deal found 9/17![Air France logo]()
$814
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 September 19, 2026.
Search for one-way flight options from Knoxville to Heathrow. Find affordable one-way fares based on user searches. Data last updated September 19, 2026.
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1512:00 pm -
2 stops15h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Delta logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Wed 10/219:10 am -
2 stops25h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$366
This Ticket deal was found by Cheapflights users on 9/17. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:23 pm -
2 stops18h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Virgin Atlantic logo]()
$517
This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1510:16 am -
3 stops16h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Air Canada logo]()
$598
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:30 pm -
3 stops34h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$847
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 September 19, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $753 (Virgin Atlantic) |
One-way from | $348 (American Airlines) |
Popular in | June |
Cheapest in | April |
Average price | $1,073 |
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 7,457,451 searches. Data last updated September 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
Cheapest round-trip
Quickest round-trip
KnoxvilleLondon
TYS Knoxville McGhee Tyson - LHR London Heathrow
TYSLHR
Knoxville McGhee Tyson
Mon 3/15
12:00 pm-7:45 am
2 stops15h 45m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$348
KnoxvilleLondon
TYS Knoxville McGhee Tyson - LHR London Heathrow
TYSLHR
Knoxville McGhee Tyson
Wed 10/21
9:10 am-6:20 am
1 stop16h 10m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$374
KnoxvilleLondon
TYS Knoxville McGhee Tyson - LHR London Heathrow
TYSLHR
Knoxville McGhee Tyson
Mon 3/15
10:16 am-7:10 am
3 stops16h 54m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$598
KnoxvilleLondon
TYS Knoxville McGhee Tyson - LHR London Heathrow
TYSLHR
Knoxville McGhee Tyson
Tue 10/13
8:35 am-6:25 am
1 stop16h 50m
London Heathrow
Fri 10/23
11:15 am-10:08 pm
1 stop15h 53m
$764
KnoxvilleLondon
TYS Knoxville McGhee Tyson - LHR London Heathrow
TYSLHR
Knoxville McGhee Tyson
Thu 2/11
8:47 am-9:00 am
1 stop19h 13m
London Heathrow
Tue 2/16
8:40 am-9:34 pm
2 stops17h 54m
$816
KnoxvilleLondon
TYS Knoxville McGhee Tyson - LHR London Heathrow
TYSLHR
Knoxville McGhee Tyson
Sun 2/21
4:00 pm-7:50 am
1 stop10h 50m
London Heathrow
Sun 2/28
11:45 am-11:46 pm
2 stops17h 01m
$816
KnoxvilleLondon
TYS Knoxville McGhee Tyson - LHR London Heathrow
TYSLHR
Knoxville McGhee Tyson
Thu 9/24
8:30 pm-11:50 am
3 stops34h 20m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$847
KnoxvilleLondon
TYS Knoxville McGhee Tyson - LHR London Heathrow
TYSLHR
Knoxville McGhee Tyson
Thu 12/3
4:01 pm-7:50 am
1 stop10h 49m
London Heathrow
Sat 12/12
6:20 am-8:00 pm
2 stops18h 40m
$857
KnoxvilleLondon
TYS Knoxville McGhee Tyson - LHR London Heathrow
TYSLHR
Knoxville McGhee Tyson
Sat 11/7
11:20 am-9:10 am
1 stop16h 50m
London Heathrow
Sun 11/15
9:00 am-11:59 pm
2 stops19h 59m
$865
KnoxvilleLondon
TYS Knoxville McGhee Tyson - LHR London Heathrow
TYSLHR
Knoxville McGhee Tyson
Sat 10/31
7:09 am-6:25 am
1 stop19h 16m
London Heathrow
Sat 11/7
10:50 am-6:47 pm
1 stop12h 57m
$865
Sorted 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 September.
| 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 | |
| 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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Knoxville-London Heathrow Airport flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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 $1,662). 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?
Airfare is below average for this route at the moment.
Knoxville to London Heathrow Airport flights typically cost between $882 and $1,217 in December.The cheapest round-trip price found within the last 5 days was $753 on Virgin Atlantic (Dec 1-Dec 8).
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 September 19, 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.
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Overall
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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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Gatwick
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Other flights to Heathrow
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 19, 2026.
Knoxville and Heathrow flights
Browse other Knoxville and Heathrow flight options. Last updated on September 19, 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 September 19, 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 7,457,451 searches. Data last updated September 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$646 | Average$1,193 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$674 | Average$1,176 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$677 | Average$1,057 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$719 | Average$882 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$1,152 | Average$1,826 | FlexibilityNo cancel fee | On-time72% |