$528 Find Cheap Flights from Belfast to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast to Seattle departing on 8/25. 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 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
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$984
Multiple Airlines
Tue 9/1Tue 9/22
BHD - SEA • 1 stop
Cheapest one-way
$528
Multiple Airlines
Tue 8/25
BFS - SEA • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Belfast to Seattle

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

Tue, Sep 1 - Tue, Sep 22
Multiple Airlines Logo
8:25 pm - 11:35 am
BHD
-
SEA
23h 10m
1 stop
Multiple Airlines Logo
1:24 pm - 3:20 pm
SEA
-
BHD
17h 56m
2 stops
$984Multiple Airlines
Tue, Sep 1 - Tue, Sep 22
Multiple Airlines Logo
9:40 am - 11:50 pm
BHD
-
SEA
22h 10m
2 stops
Multiple Airlines Logo
1:24 pm - 3:20 pm
SEA
-
BHD
17h 56m
2 stops
$991Multiple Airlines
Tue, Sep 1 - Tue, Sep 22
Multiple Airlines Logo
8:25 pm - 11:35 am
BHD
-
SEA
23h 10m
1 stop
Multiple Airlines Logo
1:24 pm - 3:20 pm
SEA
-
BHD
17h 56m
2 stops
$1,001Multiple Airlines
Tue, Sep 1 - Tue, Sep 22
Multiple Airlines Logo
6:20 pm - 11:35 am
BHD
-
SEA
25h 15m
1 stop
Multiple Airlines Logo
8:20 pm - 7:40 pm
SEA
-
BHD
15h 20m
1 stop
$1,004Multiple Airlines
Tue, Sep 1 - Tue, Sep 22
British Airways Logo
6:30 am - 11:35 am
BHD
-
SEA
13h 05m
1 stop
British Airways Logo
8:20 pm - 5:35 pm
SEA
-
BHD
13h 15m
1 stop
$1,009British Airways
Tue, Sep 1 - Tue, Sep 22
Multiple Airlines Logo
9:40 am - 11:50 pm
BHD
-
SEA
22h 10m
2 stops
Multiple Airlines Logo
1:24 pm - 3:20 pm
SEA
-
BHD
17h 56m
2 stops
$1,011Multiple Airlines
Tue, Sep 1 - Tue, Sep 22
Multiple Airlines Logo
9:40 am - 11:50 pm
BHD
-
SEA
22h 10m
2 stops
Multiple Airlines Logo
1:24 pm - 3:20 pm
SEA
-
BHD
17h 56m
2 stops
$1,044Multiple Airlines
Thu, Sep 10 - Mon, Sep 14
British Airways Logo
9:35 am - 6:25 pm
BHD
-
SEA
16h 50m
1 stop
British Airways Logo
6:24 am - 12:55 pm
SEA
-
BHD
22h 31m
2 stops
$1,050British Airways
Thu, Sep 10 - Mon, Sep 14
British Airways Logo
6:30 am - 11:35 am
BHD
-
SEA
13h 05m
1 stop
British Airways Logo
1:24 pm - 7:25 pm
SEA
-
BHD
22h 01m
2 stops
$1,051British Airways
Thu, Sep 10 - Mon, Sep 14
British Airways Logo
12:45 pm - 11:35 am
BHD
-
SEA
30h 50m
1 stop
British Airways Logo
1:24 pm - 3:30 pm
SEA
-
BHD
18h 06m
2 stops
$1,053British Airways
Useful Info

Good to know

Cheapest flight$528
Flight from Belfast Intl Airport to Seattle

When to book flights from Belfast to Seattle

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

  • What is the cheapest flight from Belfast to Seattle?

    In the last 3 days, the lowest price for a flight from Belfast to Seattle was $528 for a one-way ticket and $984 for a round-trip.

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

    Yes

  • Which airports will I be using when flying from Belfast to Seattle?

    There are 2 airports in Belfast (Belfast Intl and Belfast City.) and only 1 airport in Seattle (Seattle/Tacoma Intl). The cheapest flights are generally found on the Belfast City Airport to Seattle/Tacoma Intl flight route.

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

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

  • How does KAYAK find such low prices on flights from Belfast 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 to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Belfast 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 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 with another airline.

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

Information on your arrival and departure airports

Seattle (SEA)