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>

$648 CHEAP FLIGHTS from Northern Ireland to Seattle

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

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Save 24% 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.

Flight Deals

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

Mon, Jun 15 - Mon, Jun 22

7:00 am - 8:40 pm

BFS

SEA

21h 40m

2 stops

7:00 pm - 11:10 pm

SEA

BFS

20h 10m

2 stops

$870Multiple Airlines

Mon, Jun 15 - Mon, Jun 22

8:45 am - 11:45 am

BHD

SEA

35h 00m

2 stops

7:00 pm - 8:30 pm

SEA

BHD

17h 30m

2 stops

$967Multiple Airlines

Tue, Sep 1 - Tue, Sep 22

6:30 am - 11:35 am

BHD

SEA

13h 05m

1 stop

8:20 pm - 7:40 pm

SEA

BHD

15h 20m

1 stop

$973British Airways

Mon, Jun 15 - Mon, Jun 22

7:00 am - 6:45 pm

BFS

SEA

19h 45m

1 stop

9:45 pm - 11:10 pm

SEA

BFS

17h 25m

1 stop

$978Multiple Airlines

Tue, Sep 1 - Tue, Sep 22

9:40 am - 8:52 pm

BHD

SEA

19h 12m

2 stops

8:20 pm - 5:35 pm

SEA

BHD

13h 15m

1 stop

$979British Airways

Wed, Nov 4 - Sun, Nov 8

11:25 am - 4:55 pm

BHD

SEA

13h 30m

1 stop

11:42 am - 10:40 am

SEA

BHD

38h 58m

2 stops

$1,011British Airways

Wed, Nov 4 - Sun, Nov 8

9:15 am - 4:55 pm

BHD

SEA

15h 40m

1 stop

2:46 pm - 10:40 am

SEA

BHD

35h 54m

2 stops

$1,014British Airways

Wed, Jun 24 - Sun, Jul 5

6:10 am - 8:40 pm

BFS

SEA

22h 30m

2 stops

7:00 pm - 8:15 pm

SEA

BFS

17h 15m

2 stops

$1,015Multiple Airlines

Wed, Nov 4 - Sun, Nov 8

6:35 am - 4:55 pm

BHD

SEA

18h 20m

1 stop

11:42 am - 10:40 am

SEA

BHD

38h 58m

2 stops

$1,015British Airways

Mon, Jun 15 - Mon, Jun 22

8:00 am - 6:30 pm

BFS

SEA

18h 30m

3 stops

1:30 pm - 11:20 pm

SEA

BFS

25h 50m

3 stops

$1,017Multiple Airlines

Useful Info

Cheapest flight	$870

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

Woodinville

Edmonds

Poulsbo

Aberdeen

DuPont

Shoreline

Monroe

Castle Rock

Edgewood

Everything you need to know for your flight to Seattle

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Seattle

Seattle (SEA)

$870 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

Find direct flights for Seattle

Flights to other popular destinations

Flights from domestic origins to Seattle

Choose which airport to fly into in Seattle

Find deals for your return flight