BFS - SEA

$1,079 Find Cheap Flights from Belfast Intl Airport to Seattle

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast Intl to Seattle departing on 7/1. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

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

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

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

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

Flights Deals
Useful Info
Flights Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Belfast Intl to Seattle 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 Belfast Intl to Seattle

Tue, Jul 1 - Tue, Jul 8
Logo
5:55 am - 6:38 pmBFS-SEA
44h 43m3 stops
Logo
3:45 pm - 9:20 pmSEA-BFS
21h 35m3 stops
$1,079
Find Deal
Sun, Jun 22 - Thu, Jun 26
Logo
10:55 pm - 8:28 pmBFS-SEA
29h 33m2 stops
Logo
3:45 pm - 11:30 pmSEA-BFS
23h 45m3 stops
$1,146
Find Deal
Sun, Jun 22 - Thu, Jun 26
Logo
10:55 pm - 10:16 pmBFS-SEA
31h 21m3 stops
Logo
3:45 pm - 11:30 pmSEA-BFS
23h 45m3 stops
$1,161
Find Deal
Sun, Jun 22 - Thu, Jun 26
Logo
10:55 pm - 8:28 pmBFS-SEA
29h 33m2 stops
Logo
3:45 pm - 4:40 pmSEA-BFS
16h 55m2 stops
$1,212
Find Deal
Tue, Jul 1 - Tue, Jul 8
Logo
10:25 pm - 6:38 pmBFS-SEA
28h 13m3 stops
Logo
2:20 pm - 4:40 pmSEA-BFS
18h 20m2 stops
$1,289
Find Deal
Sun, Jun 22 - Thu, Jun 26
Logo
10:55 pm - 8:28 pmBFS-SEA
29h 33m2 stops
Logo
8:20 pm - 9:55 amSEA-BFS
29h 35m1 stop
$1,428
Find Deal
Tue, Jul 1 - Tue, Jul 8
Logo
10:25 pm - 11:25 amBFS-SEA
21h 00m2 stops
Logo
2:20 pm - 4:40 pmSEA-BFS
18h 20m2 stops
$1,662
Find Deal
Sun, Jun 22 - Thu, Jun 26
Logo
7:00 am - 6:20 pmBFS-SEA
19h 20m1 stop
Logo
8:20 pm - 9:10 pmSEA-BFS
16h 50m1 stop
$2,135
Find Deal
Useful Info

Good to know

Low seasonMay
High seasonMarch
Cheapest flight$1,079
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Belfast Intl Airport to Seattle

When to book flights from Belfast Intl to Seattle

Are your dates flexible? Find out the best times to travel from Belfast Intl to Seattle 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 Belfast Intl Airport to Seattle flights

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

    In the last 3 days, the lowest price for a flight from Belfast Intl Airport to Seattle was $1,079 for a round-trip ticket.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Belfast Intl Airport and on arrival in Seattle.

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

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

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

    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 Belfast Intl Airport to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Belfast Intl Airport 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 Belfast Intl Airport to Seattle?

    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 Seattle with an airline and back to Belfast Intl Airport with another airline. Booking your flights between Belfast Intl Airport and SEA 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 Belfast Intl Airport to Seattle?

    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 Seattle from Belfast Intl Airport 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 Belfast Intl to Seattle

Information on your arrival and departure airports

Belfast Intl Airport (BFS)
Seattle (SEA)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.