Cheap flights from Belfast to Key West
Cheap return flights from Belfast to Key West
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Key West flight facts
What you need to know
What are the cheapest airlines?
- Ryanair
- American Airlines
- JetBlue Airways
These airlines usually offer the cheapest flights from Belfast to Key West.
What airlines fly indirectly?
- British Airways
- Delta Air Lines
- United Airlines
These airlines fly from Belfast to Key West, but you’ll have at least one layover.
How long is the flight?
12 hours 30 minutes
This is the shortest flight time from Belfast to Key West.
Alternative flights from the UK to Key West
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/Key West route. There are around 35 flights on any given week from the UK to Key West 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 Key West
Tips and advice from our flight experts
You've searched for flights from Belfast to Key West. We've found 25 flights and compared them to give you the best offer. Ryanair is, on average, the cheapest for this route. Look out for their deals! The cheapest offer we've found is a one-way ticket for £72 from Belfast to Key West on 22/06/2026 at 05:55.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 10 airlines that operate the 7,000 km flight from Belfast to Key West.
To find the best offers, book at least 2-3 months in advance. Consider traveling in the off-peak season. Ryanair often has great deals, and the average flight duration is about 12 hours 30 minutes. 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 Key West
Where other people are flying to
