How does KAYAK find such low prices on flights from Northern Ireland 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 Northern Ireland to Seattle. Visit our flight page for the latest deals!>/a>

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Northern Ireland is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Northern Ireland 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 Northern Ireland with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Northern Ireland 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 Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$389 CHEAP FLIGHTS from Northern Ireland to Seattle

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

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Cheap Flights from Northern Ireland to Seattle

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Northern Ireland to Seattle

Sat, May 2 - Sat, May 9

8:15 pm - 9:40 am

BFS

SEA

45h 25m

3 stops

7:00 pm - 11:25 pm

SEA

BFS

20h 25m

3 stops

$796Multiple Airlines

Sat, May 2 - Sat, May 9

8:15 pm - 9:40 am

BFS

SEA

45h 25m

3 stops

7:00 pm - 8:50 pm

SEA

BFS

17h 50m

2 stops

$884Multiple Airlines

Wed, Apr 22 - Sun, Apr 26

10:05 am - 6:25 pm

BHD

SEA

16h 20m

1 stop

1:19 pm - 5:40 pm

SEA

BHD

20h 21m

2 stops

$934British Airways

Wed, Apr 22 - Sun, Apr 26

11:35 am - 6:25 pm

BHD

SEA

14h 50m

1 stop

11:16 am - 2:35 pm

SEA

BHD

19h 19m

2 stops

$939British Airways

Fri, Sep 11 - Mon, Sep 14

6:30 am - 7:24 pm

BHD

SEA

20h 54m

2 stops

6:24 am - 12:55 pm

SEA

BHD

22h 31m

2 stops

$940British Airways

Wed, Apr 22 - Sun, Apr 26

6:30 am - 11:35 am

BHD

SEA

13h 05m

1 stop

1:19 pm - 2:35 pm

SEA

BHD

17h 16m

2 stops

$942British Airways

Fri, Sep 11 - Mon, Sep 14

6:30 am - 11:35 am

BHD

SEA

13h 05m

1 stop

2:01 pm - 7:25 pm

SEA

BHD

21h 24m

2 stops

$943British Airways

Fri, Sep 11 - Mon, Sep 14

6:30 am - 5:29 pm

BHD

SEA

18h 59m

2 stops

1:24 pm - 5:30 pm

SEA

BHD

20h 06m

2 stops

$944British Airways

Wed, Apr 22 - Sun, Apr 26

11:35 am - 6:25 pm

BHD

SEA

14h 50m

1 stop

8:20 pm - 8:50 am

SEA

BHD

28h 30m

1 stop

$945British Airways

Fri, Sep 11 - Mon, Sep 14

6:30 am - 7:24 pm

BHD

SEA

20h 54m

2 stops

6:24 am - 12:55 pm

SEA

BHD

22h 31m

2 stops

$947British Airways

Useful Info

Cheapest flight	$389

Flight from Belfast Intl Airport to Seattle

How does KAYAK find such low prices on flights from Northern Ireland 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 Northern Ireland to Seattle.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Northern Ireland to Seattle?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Northern Ireland 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 Northern Ireland 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 Northern Ireland with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Northern Ireland 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 Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Lynnwood

Centralia

Fife

Lakewood

Westport

Mukilteo

Lacey

Edmonds

Aberdeen

Poulsbo

Woodinville

Shoreline

DuPont

Monroe

Castle Rock

Edgewood

Everything you need to know for your flight to Seattle

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Seattle (SEA)

$389 Find Cheap Flights from Northern Ireland to Seattle

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

Cheap Flights from Northern Ireland to Seattle

Recent round-trip flight deals from Northern Ireland to Seattle

Recent one-way flight deals from Northern Ireland to Seattle

Good to know

FAQs for booking flights from Northern Ireland to Seattle

How does KAYAK find such low prices on flights from Northern Ireland 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 Northern Ireland to Seattle.

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

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

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Northern Ireland 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 Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Seattle?

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

Cabin class types available on flights to Northern Ireland

Complete your trip to Seattle with a hotel stay or car rental

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Flights from domestic origins to Seattle

Choose which airport to fly into in Seattle

Find deals for your return flight