SEA - BFS

$278 Find Cheap Flights from Seattle to Belfast Intl Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Belfast Intl departing on 2/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Belfast Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Belfast, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Belfast, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$605
Multiple Airlines
Fri 1/30Fri 2/6
SEA - BFS • 2 stops
Cheapest one-way
$278
Multiple Airlines
Mon 2/2
SEA - BFS • 3 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Belfast Intl!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Seattle to Belfast Intl (SEA-BFS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Belfast Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Belfast Intl

Fri, Jan 30 - Fri, Feb 6
Multiple Airlines Logo
2:35 pm - 10:00 pm
SEA
-
BFS
23h 25m2 stops
Multiple Airlines Logo
8:05 am - 5:00 pm
BFS
-
SEA
16h 55m2 stops
$605Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
2:35 pm - 1:30 pm
SEA
-
BFS
14h 55m2 stops
Multiple Airlines Logo
7:00 am - 5:00 pm
BFS
-
SEA
18h 00m2 stops
$686Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
2:35 pm - 9:40 pm
SEA
-
BFS
23h 05m2 stops
Multiple Airlines Logo
11:10 pm - 5:00 pm
BFS
-
SEA
25h 50m3 stops
$902Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
2:35 pm - 10:20 pm
SEA
-
BFS
23h 45m3 stops
Multiple Airlines Logo
11:10 pm - 5:00 pm
BFS
-
SEA
25h 50m3 stops
$948Multiple Airlines
Fri, Jan 30 - Fri, Feb 6
Multiple Airlines Logo
2:35 pm - 3:10 pm
SEA
-
BFS
16h 35m2 stops
Multiple Airlines Logo
7:50 am - 9:31 am
BFS
-
SEA
33h 41m3 stops
$1,006Multiple Airlines
Fri, Jan 30 - Fri, Feb 6
Multiple Airlines Logo
3:10 pm - 11:50 pm
SEA
-
BFS
24h 40m3 stops
Multiple Airlines Logo
7:50 am - 9:31 am
BFS
-
SEA
33h 41m3 stops
$1,034Multiple Airlines
Useful Info

Good to know

Low seasonApril
Cheapest flight$278
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Seattle to Belfast Intl Airport

When to book flights from Seattle to Belfast Intl

Are your dates flexible? Find out the best times to travel from Seattle to Belfast Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to Belfast Intl Airport flights

  • What is the cheapest flight from Seattle to Belfast Intl Airport?

    In the last 3 days, the lowest price for a flight from Seattle to Belfast Intl Airport was $278 for a one-way ticket and $605 for a round-trip.

  • Do I need a passport to fly between Seattle and Belfast Intl Airport?

    Yes, you’ll need a passport to travel to Belfast Intl Airport from Seattle.

  • Which aircraft models fly most regularly from Seattle to Belfast Intl Airport?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Seattle to Belfast Intl Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Belfast Intl Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Belfast Intl Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast Intl Airport from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Belfast Intl Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Belfast Intl Airport with an airline and back to Seattle with another airline. Booking your flights between Seattle and BFS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Belfast Intl Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Belfast Intl Airport from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Seattle to Belfast Intl

Information on your arrival and departure airports

Seattle (SEA)
Belfast Intl (BFS)