Cheap flights from London Heathrow Airport to Knoxville from £398
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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
1 Jan — 8 Jan1
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 March, booked 60 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 2 December 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 2 December 2025.
Sat 27/1209:55LHR - TYS
1 stop11h 49mMultiple Airlines
Mon 22/618:56TYS - LHR
1 stop11h 19mMultiple Airlines
Deal found 1/12£768
Sat 27/1212:50LHR - TYS
2 stops36h 53mBritish Airways
Mon 22/610:58TYS - LHR
1 stop16h 07mBritish Airways
Deal found 1/12£824
Thu 18/1214:45LHR - TYS
1 stop12h 13mMultiple Airlines
Wed 14/116:00TYS - LHR
1 stop10h 20mMultiple Airlines
Deal found 1/12£924
Thu 18/1206:55LHR - TYS
2 stops18h 48mBritish Airways
Wed 14/116:00TYS - LHR
1 stop15h 00mBritish Airways
Deal found 1/12£939
Sat 27/1213:30LHR - TYS
2 stops39h 29mLufthansa
Mon 22/614:00TYS - LHR
2 stops41h 20mLufthansa
Deal found 1/12£968
Thu 18/1212:45LHR - TYS
2 stops16h 14mUnited Airlines
Wed 14/114:25TYS - LHR
2 stops13h 00mUnited Airlines
Deal found 1/12£1,025
Sat 20/1211:25LHR - TYS
3 stops39h 31mMultiple Airlines
Thu 1/107:15TYS - LHR
2 stops20h 15mMultiple Airlines
Deal found 30/11£1,098
Sat 20/1212:05LHR - TYS
1 stop16h 54mLufthansa
Thu 1/114:00TYS - LHR
1 stop15h 50mLufthansa
Deal found 30/11£1,373
Sat 20/1210:25LHR - TYS
2 stops18h 34mUnited Airlines
Thu 1/109:50TYS - LHR
2 stops15h 05mUnited Airlines
Deal found 30/11£1,461
Sat 20/1220:15LHR - TYS
3 stops47h 33mEthiopian Air
Thu 1/114:00TYS - LHR
3 stops35h 35mEthiopian Air
Deal found 30/11£3,022
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 2 December 2025.
Mon 12/107:40LHR - TYS
2 stops16h 47mLufthansa
Wed 18/319:25TYS - LHR
1 stop11h 25mLufthansa
Deal found 30/11£509
Mon 12/108:30LHR - TYS
2 stops17h 22mUnited Airlines
Wed 18/310:55TYS - LHR
2 stops15h 45mUnited Airlines
Deal found 30/11£534
Thu 15/107:40LHR - TYS
2 stops16h 47mLufthansa
Thu 22/113:59TYS - LHR
1 stop12h 56mLufthansa
Deal found 1/12£512
Sun 8/307:30LHR - TYS
2 stops15h 59mUnited Airlines
Mon 16/318:55TYS - LHR
1 stop12h 20mUnited Airlines
Deal found 1/12£534
Wed 21/106:35LHR - TYS
2 stops17h 52mLufthansa
Sun 25/113:59TYS - LHR
1 stop12h 56mLufthansa
Deal found 29/11£534
Thu 12/308:30LHR - TYS
2 stops16h 17mUnited Airlines
Sun 15/307:00TYS - LHR
2 stops20h 10mUnited Airlines
Deal found 30/11£534
Mon 9/308:30LHR - TYS
2 stops16h 17mUnited Airlines
Tue 17/311:40TYS - LHR
2 stops16h 15mUnited Airlines
Deal found 1/12£534
Last-minute flights from Heathrow to Knoxville
Discover last-minute flight deals from Heathrow to Knoxville. Data last updated 2 December 2025 and is based on user searches.
Thu 18/1214:45LHR - TYS
1 stop12h 13mMultiple Airlines
Wed 14/116:00TYS - LHR
1 stop10h 20mMultiple Airlines
Deal found 1/12£924
Sat 27/1209:55LHR - TYS
1 stop11h 49mMultiple Airlines
Mon 22/618:56TYS - LHR
1 stop11h 19mMultiple Airlines
Deal found 1/12£768
Sat 27/1212:50LHR - TYS
2 stops36h 53mBritish Airways
Mon 22/610:58TYS - LHR
1 stop16h 07mBritish Airways
Deal found 1/12£824
Mon 12/107:40LHR - TYS
2 stops16h 47mLufthansa
Wed 18/319:25TYS - LHR
1 stop11h 25mLufthansa
Deal found 30/11£509
Thu 15/107:40LHR - TYS
2 stops16h 47mLufthansa
Thu 22/113:59TYS - LHR
1 stop12h 56mLufthansa
Deal found 1/12£512
Wed 21/106:35LHR - TYS
2 stops17h 52mLufthansa
Sun 25/113:59TYS - LHR
1 stop12h 56mLufthansa
Deal found 29/11£534
Wed 21/113:25LHR - TYS
2 stops26h 32mAir Canada
Sun 25/119:20TYS - LHR
2 stops30h 50mAir Canada
Deal found 29/11£663
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 2 December 2025.
Sun 15/312:45LHR - TYS
2 stops36h 20mBritish Airways
Deal found 1/12£398
Sun 15/320:50LHR - TYS
3 stops45h 20mMultiple Airlines
Deal found 1/12£415
Sun 28/1219:55LHR - TYS
3 stops44h 36mMultiple Airlines
Deal found 1/12£612
Sun 28/1208:30LHR - TYS
2 stops16h 21mLufthansa
Deal found 30/11£639
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 2 December 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
Mon 12/1
07:40-19:27
2 stops16h 47m
Knoxville McGhee Tyson
Wed 18/3
19:25-10:50
1 stop11h 25m
£509
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Thu 15/1
07:40-19:27
2 stops16h 47m
Knoxville McGhee Tyson
Thu 22/1
13:59-07:55
1 stop12h 56m
£512
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Mon 12/1
08:30-20:52
2 stops17h 22m
Knoxville McGhee Tyson
Wed 18/3
10:55-06:40
2 stops15h 45m
£534
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Sun 8/3
07:30-19:29
2 stops15h 59m
Knoxville McGhee Tyson
Mon 16/3
18:55-11:15
1 stop12h 20m
£534
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Wed 21/1
06:35-19:27
2 stops17h 52m
Knoxville McGhee Tyson
Sun 25/1
13:59-07:55
1 stop12h 56m
£534
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Thu 12/3
08:30-20:47
2 stops16h 17m
Knoxville McGhee Tyson
Sun 15/3
07:00-07:10
2 stops20h 10m
£534
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Mon 9/3
08:30-20:47
2 stops16h 17m
Knoxville McGhee Tyson
Tue 17/3
11:40-07:55
2 stops16h 15m
£534
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Sun 15/3
12:45-21:05
2 stops36h 20m
£398
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Sun 15/3
20:50-14:10
3 stops45h 20m
£415
LondonKnoxville
LHR - TYS
LHRTYS
London Heathrow
Sun 28/12
08:30-19:51
2 stops16h 21m
£639
Flights are sorted by cheapest return flights first.
Deals found on 1/12
Showing 1-10 of 11 results
1
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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 28 November 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 60 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, April is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £277). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of £568). 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 2 December 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 38% of one-stop itineraries from London Heathrow Airport to Knoxville on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to Knoxville?
Average return fare for one-stop flights from London Heathrow Airport to Knoxville, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Philadelphia (PHL) is the most affordable one-stop option, with an average return flight price of £606.
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 21m.
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 2 December 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?
Lufthansa and United Airlines can get you from London Heathrow Airport to Knoxville in just under 16h 47m. Your travel time can differ by up to 35m. 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 £463, 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 United Airlines and British Airways - these airlines can fly you to your destination from £473 and £483, respectively. These flights start at 33% lower than the current average price 3 months from now.
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, April is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £277). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of £568). 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 2 December 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 2 December 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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