Cheap flights from Belfast to Knoxville
Cheap return flights from Belfast 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?
- Ryanair
- easyJet
- Wizz Air
These airlines usually offer the cheapest flights from Belfast to Knoxville.
What airlines fly indirectly?
- American Airlines
- Delta Air Lines
- United Airlines
These airlines fly from Belfast to Knoxville, but you’ll have at least one layover.
How long is the flight?
12 hours
This is the shortest flight time from Belfast to Knoxville.
Alternative flights from the UK to Knoxville
Check out prices for other routes
Alternative flights from Belfast
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 Belfast/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 Belfast to Knoxville
Tips and advice from our flight experts
You've searched for flights from Belfast to Knoxville. We've found 15 flights and compared them to give you the best offer. Ryanair is, on average, the cheapest airline for this route, so keep an eye on them. The cheapest offer we've found is a one-way ticket for the route Belfast to Knoxville on 27/04/2026 at 05:40 for £33.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 5 airlines that operate the 6,800 km flight from Belfast to Knoxville.
To find the best offers, consider booking in advance or looking for last-minute deals. The summer season is usually more expensive. Ryanair is a popular and cheap airline for this route, and the average flight duration is about 12 hours. After selecting an offer, fill out your information and proceed to payment. Don't forget to check our flight + hotel service to save time and money!
Other popular destinations near Knoxville
Where other people are flying to
