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>

$426 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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Cheapest round-trip

$891

British Airways

Sat 3/7Mon 3/9

BHD - SEA • 1 stop

Cheapest one-way

$426

Multiple Airlines

Mon 5/18

BFS - SEA • 3 stops

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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

Last minute

Recent round-trip flight deals from Northern Ireland to Seattle

Sat, Mar 7 - Mon, Mar 9

6:35 am - 11:30 am

BHD

SEA

12h 55m

1 stop

7:50 pm - 6:35 pm

SEA

BHD

15h 45m

1 stop

$891British Airways

Mon, Mar 23 - Mon, Mar 30

6:30 am - 6:40 pm

BHD

SEA

19h 10m

2 stops

7:59 pm - 9:20 am

SEA

BHD

29h 21m

2 stops

$895KLM

Sat, Mar 7 - Mon, Mar 9

6:35 am - 11:04 pm

BHD

SEA

24h 29m

2 stops

7:21 am - 2:15 pm

SEA

BHD

23h 54m

2 stops

$896British Airways

Sat, Mar 7 - Mon, Mar 9

6:35 am - 11:30 am

BHD

SEA

12h 55m

1 stop

7:21 am - 10:40 am

SEA

BHD

20h 19m

2 stops

$897British Airways

Sat, Mar 7 - Mon, Mar 9

6:35 am - 11:30 am

BHD

SEA

12h 55m

1 stop

7:21 am - 2:15 pm

SEA

BHD

23h 54m

2 stops

$898British Airways

Sat, Mar 7 - Mon, Mar 9

6:35 am - 11:04 pm

BHD

SEA

24h 29m

2 stops

7:21 am - 10:40 am

SEA

BHD

20h 19m

2 stops

$903British Airways

Sun, Mar 22 - Sun, Mar 29

6:30 am - 10:25 am

BFS

SEA

34h 55m

3 stops

3:40 pm - 9:00 pm

SEA

BFS

21h 20m

2 stops

$904Multiple Airlines

Mon, May 18 - Thu, May 28

6:30 am - 11:35 am

BHD

SEA

13h 05m

1 stop

8:20 pm - 6:45 pm

SEA

BHD

14h 25m

1 stop

$937British Airways

Mon, May 18 - Thu, May 28

9:50 am - 11:42 am

BHD

SEA

33h 52m

1 stop

9:34 am - 9:20 am

SEA

BHD

15h 46m

2 stops

$942KLM

Sun, Mar 22 - Sun, Mar 29

6:30 am - 10:25 am

BFS

SEA

34h 55m

3 stops

3:40 pm - 9:55 pm

SEA

BFS

22h 15m

3 stops

$953Multiple Airlines

Useful Info

Cheapest flight	$426

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

Mukilteo

Westport

Lacey

Edmonds

Poulsbo

Aberdeen

Woodinville

Shoreline

DuPont

Monroe

Castle Rock

Edgewood

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Seattle (SEA)

$426 Find Cheap Flights from Northern Ireland to Seattle

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

Everything you should know

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

Recent last minute 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