Cheap flights from London Heathrow Airport to Knoxville from £576
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
4 Dec — 11 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Knoxville McGhee Tyson are usually found in September or November, booked 66 days in advance, depart on a Monday or Wednesday and return on a Tuesday
Cheap flight deals from Heathrow to Knoxville
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 4 November 2025.
Explore the most affordable flight options available from Heathrow to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 November 2025.
Tue 9/1209:00LHR - TYS
2 stops30h 13mUnited Airlines
Tue 16/1207:00TYS - LHR
2 stops19h 10mUnited Airlines
Deal found 2/11£576
Tue 2/1206:50LHR - TYS
2 stops17h 39mUnited Airlines
Tue 9/1219:25TYS - LHR
1 stop10h 25mUnited Airlines
Deal found 3/11£581
Tue 2/1210:15LHR - TYS
1 stop15h 45mBritish Airways
Tue 9/1218:29TYS - LHR
1 stop10h 56mBritish Airways
Deal found 3/11£585
Tue 9/1211:05LHR - TYS
1 stop17h 13mVirgin Atlantic
Tue 16/1215:57TYS - LHR
1 stop10h 53mVirgin Atlantic
Deal found 2/11£600
Tue 25/1114:45LHR - TYS
1 stop13h 09mBritish Airways
Mon 8/1214:58TYS - LHR
1 stop14h 27mBritish Airways
Deal found 3/11£601
Tue 9/1206:30LHR - TYS
2 stops18h 35mDelta
Tue 16/1215:57TYS - LHR
1 stop10h 53mDelta
Deal found 2/11£609
Mon 1/1218:00LHR - TYS
2 stops24h 17mUnited Airlines
Mon 8/1210:50TYS - LHR
2 stops14h 50mUnited Airlines
Deal found 3/11£610
Wed 26/1110:45LHR - TYS
1 stop13h 17mVirgin Atlantic
Thu 4/1214:37TYS - LHR
1 stop12h 13mVirgin Atlantic
Deal found 2/11£614
Tue 25/1108:55LHR - TYS
1 stop12h 56mVirgin Atlantic
Sun 30/1117:36TYS - LHR
1 stop31h 49mVirgin Atlantic
Deal found 3/11£615
Wed 26/1106:45LHR - TYS
2 stops19h 18mBritish Airways
Thu 4/1210:55TYS - LHR
1 stop14h 40mBritish Airways
Deal found 2/11£616
Mon 17/1110:45LHR - TYS
1 stop13h 17mVirgin Atlantic
Sat 6/1215:50TYS - LHR
2 stops58h 15mVirgin Atlantic
Deal found 3/11£620
Tue 25/1106:30LHR - TYS
2 stops17h 32mDelta
Mon 8/1219:59TYS - LHR
1 stop10h 41mDelta
Deal found 3/11£623
Best flights from Heathrow to Knoxville
Discover carefully curated flight deals from Heathrow to Knoxville that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 4 November 2025.
Tue 9/1209:00LHR - TYS
2 stops30h 13mUnited Airlines
Tue 16/1207:00TYS - LHR
2 stops19h 10mUnited Airlines
Deal found 2/11£576
Tue 2/1210:15LHR - TYS
1 stop15h 45mBritish Airways
Tue 9/1218:29TYS - LHR
1 stop10h 56mBritish Airways
Deal found 3/11£585
Tue 9/1206:30LHR - TYS
2 stops18h 35mDelta
Tue 16/1215:57TYS - LHR
1 stop10h 53mDelta
Deal found 2/11£609
Fri 6/307:40LHR - TYS
2 stops16h 24mLufthansa
Tue 10/313:53TYS - LHR
1 stop12h 02mLufthansa
Deal found 3/11£614
Tue 25/1108:55LHR - TYS
1 stop12h 56mVirgin Atlantic
Sun 30/1117:36TYS - LHR
1 stop31h 49mVirgin Atlantic
Deal found 3/11£615
Tue 2/1206:50LHR - TYS
2 stops17h 39mUnited Airlines
Tue 9/1219:25TYS - LHR
1 stop10h 25mUnited Airlines
Deal found 3/11£581
Wed 26/1106:45LHR - TYS
2 stops19h 18mBritish Airways
Thu 4/1210:55TYS - LHR
1 stop14h 40mBritish Airways
Deal found 2/11£616
Mon 17/1110:45LHR - TYS
1 stop13h 17mVirgin Atlantic
Sat 6/1215:50TYS - LHR
2 stops58h 15mVirgin Atlantic
Deal found 3/11£620
Wed 26/1106:30LHR - TYS
2 stops15h 21mDelta
Thu 4/1214:37TYS - LHR
2 stops13h 08mDelta
Deal found 2/11£623
Mon 1/1218:00LHR - TYS
2 stops24h 17mUnited Airlines
Mon 8/1213:52TYS - LHR
1 stop13h 03mUnited Airlines
Deal found 3/11£610
Last-minute flights from Heathrow to Knoxville
Discover last-minute flight deals from Heathrow to Knoxville. Data last updated 4 November 2025 and is based on user searches.
Mon 17/1110:45LHR - TYS
1 stop13h 17mVirgin Atlantic
Sat 6/1215:50TYS - LHR
2 stops58h 15mVirgin Atlantic
Deal found 3/11£620
Tue 25/1114:45LHR - TYS
1 stop13h 09mBritish Airways
Mon 8/1214:58TYS - LHR
1 stop14h 27mBritish Airways
Deal found 3/11£601
Tue 25/1108:55LHR - TYS
1 stop12h 56mVirgin Atlantic
Sun 30/1117:36TYS - LHR
1 stop31h 49mVirgin Atlantic
Deal found 3/11£615
Tue 25/1106:30LHR - TYS
2 stops17h 32mDelta
Mon 8/1214:37TYS - LHR
2 stops13h 08mDelta
Deal found 3/11£623
Wed 26/1110:45LHR - TYS
1 stop13h 17mVirgin Atlantic
Thu 4/1214:37TYS - LHR
1 stop12h 13mVirgin Atlantic
Deal found 2/11£614
Wed 26/1106:45LHR - TYS
2 stops19h 18mBritish Airways
Thu 4/1210:55TYS - LHR
1 stop14h 40mBritish Airways
Deal found 2/11£616
Mon 1/1218:00LHR - TYS
2 stops24h 17mUnited Airlines
Mon 8/1210:50TYS - LHR
2 stops14h 50mUnited Airlines
Deal found 3/11£610
Tue 2/1206:50LHR - TYS
2 stops17h 39mUnited Airlines
Tue 9/1213:52TYS - LHR
2 stops14h 18mUnited Airlines
Deal found 3/11£581
Tue 2/1210:15LHR - TYS
1 stop15h 45mBritish Airways
Tue 9/1218:29TYS - LHR
1 stop10h 56mBritish Airways
Deal found 3/11£585
Tue 9/1209:00LHR - TYS
2 stops30h 13mUnited Airlines
Tue 16/1207:00TYS - LHR
2 stops19h 10mUnited Airlines
Deal found 2/11£576
Tue 9/1211:05LHR - TYS
1 stop17h 13mVirgin Atlantic
Tue 16/1215:57TYS - LHR
1 stop10h 53mVirgin Atlantic
Deal found 2/11£600
Tue 9/1206:30LHR - TYS
2 stops18h 35mDelta
Tue 16/1215:57TYS - LHR
1 stop10h 53mDelta
Deal found 2/11£609
One-way flights from Heathrow to Knoxville
Search for one-way flight options from Heathrow to Knoxville. Find affordable one-way fares based on user searches. Data last updated 4 November 2025.
Wed 12/1116:20LHR - TYS
1 stop12h 39mUnited Airlines
Deal found 2/11£763
Sun 9/1113:35LHR - TYS
1 stop14h 20mLufthansa
Deal found 3/11£1,729
Sun 9/1114:50LHR - TYS
2 stops54h 56mWestJet
Deal found 3/11£1,904
Sun 9/1106:40LHR - TYS
3 stops44h 10mMultiple Airlines
Deal found 3/11£2,830
Cheapflights Fare Finder
Customise your flight search to find flights from Heathrow 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 4 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Knoxville that are best for you.
Fly from
Heathrow
Fly to
Knoxville
Route
Depart
Return
Price
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Tue 9/12
09:00-10:13
2 stops30h 13m
Knoxville McGhee Tyson
Tue 16/12
07:00-07:10
2 stops19h 10m
£576
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Tue 2/12
06:50-19:29
2 stops17h 39m
Knoxville McGhee Tyson
Tue 9/12
19:25-10:50
1 stop10h 25m
£581
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Tue 2/12
10:15-21:00
1 stop15h 45m
Knoxville McGhee Tyson
Tue 9/12
18:29-10:25
1 stop10h 56m
£585
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Tue 9/12
06:30-20:05
2 stops18h 35m
Knoxville McGhee Tyson
Tue 16/12
15:57-07:50
1 stop10h 53m
£609
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Mon 1/12
18:00-13:17
2 stops24h 17m
Knoxville McGhee Tyson
Mon 8/12
13:52-07:55
1 stop13h 03m
£610
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Fri 6/3
07:40-19:04
2 stops16h 24m
Knoxville McGhee Tyson
Tue 10/3
13:53-05:55
1 stop12h 02m
£614
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Tue 25/11
08:55-16:51
1 stop12h 56m
Knoxville McGhee Tyson
Sun 30/11
17:36-06:25
1 stop31h 49m
£615
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Wed 26/11
06:45-21:03
2 stops19h 18m
Knoxville McGhee Tyson
Thu 4/12
10:55-06:35
1 stop14h 40m
£616
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Mon 17/11
10:45-19:02
1 stop13h 17m
Knoxville McGhee Tyson
Sat 6/12
15:50-07:05
2 stops58h 15m
£620
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Wed 26/11
06:30-16:51
2 stops15h 21m
Knoxville McGhee Tyson
Thu 4/12
14:37-08:45
2 stops13h 08m
£623
Flights are sorted by cheapest return flights first.
Deals found on 2/11
Showing 1-10 of 14 results
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Best time to book a flight from Heathrow to Knoxville
Have a flexible travel schedule? Discover the best time to fly to Knoxville from Heathrow 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 Heathrow Airport to Knoxville
Prices
More
How far ahead should I book a flight from London Heathrow Airport to Knoxville?
Use this chart to determine the optimal time to book a return flight from Heathrow to Knoxville. Price data was last updated on 31 October 2025.
The price you pay for your flight from London Heathrow Airport to Knoxville may vary depending on when you book. For the best chance of a lower fare, look to book 66 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from London Heathrow Airport to Knoxville?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £389). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of £572). 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.
What is the cheapest time of day to fly from LHR to TYS?
Find hourly flight availability from Heathrow to Knoxville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 November 2025.
It’s typically best to fly out from London Heathrow Airport to Knoxville in the evening. Doing so could potentially save you 11% on the flight price compared to flying in the morning, which is usually more expensive.
What’s the top stopover airport for flights from London Heathrow Airport to Knoxville?
Share of one-stop return flights from London Heathrow Airport to Knoxville chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Atlanta (ATL) – chosen by Cheapflights users on 39% of one-stop itineraries from London Heathrow Airport to Knoxville on Cheapflights.
What’s the fastest stopover option from London Heathrow Airport to Knoxville?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport 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 49m.
What’s the fastest stopover option from London Heathrow Airport to Knoxville?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport 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 49m.
Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Knoxville?
Average stopover duration for one-stop one-way flights from London Heathrow Airport 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 25m.
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 4 November 2025.
Read reviews from past customers who have flown with Finnair, Virgin Atlantic, andUnited Airlines
from London Heathrow Airport to Knoxville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Related info for your journey
Find useful and relevant information for your journey from Heathrow 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 Heathrow?
If you book a flight to Knoxville from London Heathrow, 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 Heathrow to McGhee Tyson per day from 7 different airlines.
How long is the flight from London Heathrow Airport to Knoxville?
United Airlines, British Airways, and Delta can get you from London Heathrow Airport to Knoxville in just under 15h 45m. Your travel time can differ by up to 14h 28m. The distance from London Heathrow Airport to Knoxville is about 4076 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from London Heathrow Airport to Knoxville round-trip?
Currently priced at £467, Lufthansa will fly you from London Heathrow Airport to Knoxville and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and United Airlines - these airlines can fly you to your destination from £486 and £491, respectively. These flights start at 32% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London Heathrow Airport to Knoxville one-way?
The cheapet airlines for a one-way flight from London Heathrow Airport to Knoxville are United Airlines (£763), Lufthansa (£1,729), and WestJet (£1,904).
Can I find deals for flights from Heathrow to Knoxville that include hotel bookings?
Yes. In addition to deals on Heathrow to Knoxville flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Knoxville?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Knoxville.
Can I find deals for business class flights from Heathrow to Knoxville?
Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Knoxville?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £389). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of £572). 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.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 4 November 2025.
Discover the top 7 airlines that operate flights from Heathrow 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 4 November 2025.
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 Heathrow to Knoxville?
Cheapflights helps you search for flights from Heathrow 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 Heathrow to Knoxville?
Cheapflights helps you find that perfect flight to Knoxville from Heathrow 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 Heathrow to Knoxville with no change fees?
Yes! Cheapflights helps users easily find flights from Heathrow to Knoxville with no change fees.
Can Cheapflights notify me if prices for flights from Heathrow to Knoxville become cheaper?
Yes, Cheapflights offers price alerts on Heathrow to Knoxville flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
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