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.

$565 CHEAP FLIGHTS from Northern Ireland to Seattle

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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

Recent round-trip flight deals from Northern Ireland to Seattle

Wed, Feb 17 - Sun, Feb 21

6:35 am - 4:50 pmBHD Belfast City-SEA Seattle/Tacoma Intl

18h 15m1 stop London Heathrow

10:31 am - 4:50 pmSEA Seattle/Tacoma Intl-BHD Belfast City

22h 19m2 stops Chicago O'Hare Intl London Heathrow

$1,011Iberia

Wed, Feb 17 - Sun, Feb 21

6:35 am - 4:50 pmBHD Belfast City-SEA Seattle/Tacoma Intl

18h 15m1 stop London Heathrow

10:31 am - 4:50 pmSEA Seattle/Tacoma Intl-BHD Belfast City

22h 19m2 stops Chicago O'Hare Intl London Heathrow

$1,015Iberia

Wed, Feb 17 - Sun, Feb 21

9:15 am - 12:34 amBHD Belfast City-SEA Seattle/Tacoma Intl

23h 19m2 stops London Heathrow Chicago O'Hare Intl

10:31 am - 4:50 pmSEA Seattle/Tacoma Intl-BHD Belfast City

22h 19m2 stops Chicago O'Hare Intl London Heathrow

$1,016Iberia

Wed, Feb 17 - Sun, Feb 21

6:35 am - 12:34 amBHD Belfast City-SEA Seattle/Tacoma Intl

25h 59m2 stops London Heathrow Chicago O'Hare Intl

10:31 am - 4:50 pmSEA Seattle/Tacoma Intl-BHD Belfast City

22h 19m2 stops Chicago O'Hare Intl London Heathrow

$1,020Iberia

Thu, Jan 21 - Sun, Jan 24

2:10 pm - 4:50 pmBHD Belfast City-SEA Seattle/Tacoma Intl

34h 40m1 stop London Heathrow

6:00 am - 4:50 pmSEA Seattle/Tacoma Intl-BHD Belfast City

26h 50m2 stops Chicago O'Hare Intl London Heathrow

$1,022Iberia

Thu, Jan 21 - Sun, Jan 24

5:50 pm - 12:43 amBHD Belfast City-SEA Seattle/Tacoma Intl

38h 53m2 stops London Heathrow Chicago O'Hare Intl

9:58 am - 4:50 pmSEA Seattle/Tacoma Intl-BHD Belfast City

22h 52m2 stops Chicago O'Hare Intl London Heathrow

$1,027Iberia

Wed, May 5 - Sun, May 9

8:35 pm - 11:35 amBHD Belfast City-SEA Seattle/Tacoma Intl

23h 00m1 stop London Heathrow

5:40 pm - 8:35 pmSEA Seattle/Tacoma Intl-BHD Belfast City

18h 55m2 stops Helsinki-Vantaa London Heathrow

$1,030British Airways

Wed, May 5 - Sun, May 9

7:40 pm - 11:35 amBHD Belfast City-SEA Seattle/Tacoma Intl

23h 55m1 stop London Heathrow

1:35 pm - 10:30 amSEA Seattle/Tacoma Intl-BHD Belfast City

12h 55m1 stop London Heathrow

$1,031British Airways

Wed, May 5 - Sun, May 9

11:35 am - 12:36 amBHD Belfast City-SEA Seattle/Tacoma Intl

21h 01m2 stops London Heathrow Chicago O'Hare Intl

10:27 am - 5:40 pmSEA Seattle/Tacoma Intl-BHD Belfast City

23h 13m2 stops Chicago O'Hare Intl London Heathrow

$1,032Iberia

Useful Info

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.