Cheap flights to Belfast
Compare the lowest recent one-way fares to Belfast from 1 city, then book with our partner Aviasales.
Cheapest right now
£14
London to Belfast, one-way
Departing Mon, Dec 21, 2026
View this routeFlights to Belfast from popular cities
Lowest one-way fares from recent searches, checked twice a day.
Search flights to Belfast
Pick your dates to compare live fares from airlines and booking sites.
We may earn a commission when you book through links on this page, at no extra cost to you. Learn more.
Frequently asked questions
How much are flights to Belfast?
One-way fares to Belfast start from £14 (London to Belfast), based on recent searches. Prices change often, so confirm the final fare before booking.
Do you sell plane tickets?
No. We compare fares and send you to our travel partner Aviasales, where you choose a booking option and pay. Changes, refunds and support are handled by the airline or agency you book with.