How to find the cheapest flight from
Seattle (SEA) to Belfast International (BFS)
What is the cheapest day to fly round-trip from Seattle to Belfast International?
It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
When is the cheapest time to fly from Seattle to Belfast International (03A - BFS)?
A simple way to save on the total cost of your ticket is to fly from Seattle to Belfast International in the afternoon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight in the morning.
One-way flights to Belfast International from Seattle
The cheapest one-way flights from Seattle to Belfast International
11:50 am - 10:10 am
9:25 am - 6:00 am
6:45 am - 8:25 pm
Related info for your journey
Useful info, stats and facts about Seattle to Belfast International flights.
Destination information for Belfast International
Things to know before you go. Useful info for your trip from Seattle to Belfast International
Seattle King County/Boeing (BFI)
Seattle Lake Union Spb (LKE)