$1,079 Find Cheap Flights from Belfast 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 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
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Flights 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, 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
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Fri, Jul 25 - Fri, Aug 1
KLM Logo
5:25 pm - 3:50 pmBHD-SEA
30h 25m1 stop
KLM Logo
5:40 pm - 9:15 pmSEA-BHD
19h 35m1 stop
$1,105KLM
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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
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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
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Fri, Jul 25 - Fri, Aug 1
British Airways Logo
6:35 am - 6:20 pmBHD-SEA
19h 45m1 stop
British Airways Logo
6:18 am - 9:25 amSEA-BHD
19h 07m2 stops
$1,178British Airways
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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
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Sun, Jun 22 - Thu, Jun 26
Aer Lingus Logo
7:00 am - 5:50 pmBHD-SEA
18h 50m2 stops
Aer Lingus Logo
7:35 pm - 8:55 pmSEA-BHD
17h 20m2 stops
$1,226Aer Lingus
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Fri, Jul 25 - Fri, Aug 1
Logo
6:50 pm - 9:21 amBHD-SEA
46h 31m3 stops
Logo
3:45 pm - 9:15 pmSEA-BHD
21h 30m3 stops
$1,264
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Sun, Jun 22 - Thu, Jun 26
KLM Logo
11:25 am - 11:40 amBHD-SEA
32h 15m1 stop
KLM Logo
2:10 pm - 4:55 pmSEA-BHD
18h 45m1 stop
$1,524KLM
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Sun, Jun 22 - Thu, Jun 26
Delta Logo
8:30 am - 7:00 pmBHD-SEA
18h 30m2 stops
Delta Logo
5:35 pm - 9:15 pmSEA-BHD
19h 40m1 stop
$5,209Delta
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KAYAK's insights & trends for Belfast to Seattle flights

Get data-powered insights and trends into flights from Belfast to Seattle to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Belfast to Seattle?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Belfast to Seattle were found on KLM ($1,105) and British Airways ($1,178).

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Good to know

Cheapest flight$1,079
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 $1,088 for a one-way ticket and $1,079 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.

  • Which airline alliances offer flights from Belfast to Seattle?

    oneworld, and SkyTeam are the airline alliances operating flights between Belfast and Seattle, with SkyTeam being the most commonly used for this 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)

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