Cheap flights from London to Knoxville
Cheap return flights from London to Knoxville
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Knoxville flight facts
What you need to know
What are the cheapest airlines?
- American Airlines
- British Airways
- Delta Air Lines
These airlines usually offer the cheapest flights from London to Knoxville.
What airlines fly indirectly?
- United Airlines
- Alaska Airlines
- Spirit Airlines
These airlines fly from London to Knoxville, but you’ll have at least one layover.
How long is the flight?
12 hours
This is the shortest flight time from London to Knoxville.
Alternative flights from the UK to Knoxville
Check out prices for other routes
Alternative flights from London
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the London/Knoxville route. There are around 35 flights on any given week from the UK to Knoxville and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from London to Knoxville
Tips and advice from our flight experts
You've searched for flights from London to Knoxville. We've found 25 flights and compared them to give you the best offer. American Airlines is usually the cheapest for this route, so keep an eye on them. The cheapest offer we've found is a one-way ticket for £44 from London to Knoxville on 15/02/2026 at 07:25.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 10 airlines that operate the 7,200 km flight from London to Knoxville.
To find the best offers, consider booking 2-3 months in advance or look for last-minute deals. Flying during off-peak seasons can also save you money. American Airlines is a popular choice for this route, with an average flight duration of 12 hours. After selecting an offer, fill out your information and proceed to payment. Don't forget to check out our hotel booking options or our flight + hotel service to save time and money.
Other popular destinations near Knoxville
Where other people are flying to
