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>

$820 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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Flights Deals

Cheap Flights from Northern Ireland to Seattle

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Northern Ireland 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.

Round-trip

One-way

Recent round-trip flight deals from Northern Ireland to Seattle

Sat, Aug 30 - Thu, Sep 11

6:30 am - 3:55 pmBHD-SEA

17h 25m1 stop

2:10 pm - 4:55 pmSEA-BHD

18h 45m1 stop

$820KLM

Find Deal

Sat, Aug 30 - Thu, Sep 11

6:30 am - 2:45 pmBHD-SEA

16h 15m2 stops

2:10 pm - 9:15 pmSEA-BHD

23h 05m1 stop

$826KLM

Find Deal

Sat, Aug 30 - Thu, Sep 11

6:30 am - 6:55 pmBHD-SEA

20h 25m2 stops

9:25 am - 4:55 pmSEA-BHD

23h 30m2 stops

$841Virgin Atlantic

Find Deal

Sat, Aug 30 - Fri, Sep 12

6:30 am - 3:55 pmBHD-SEA

17h 25m1 stop

5:40 pm - 4:55 pmSEA-BHD

15h 15m1 stop

$861

Find Deal

Sat, Aug 30 - Fri, Sep 12

6:30 am - 2:45 pmBHD-SEA

16h 15m2 stops

5:40 pm - 4:55 pmSEA-BHD

15h 15m1 stop

$866

Find Deal

Sat, Aug 30 - Fri, Sep 12

6:30 am - 2:45 pmBHD-SEA

16h 15m2 stops

6:45 pm - 9:15 pmSEA-BHD

18h 30m2 stops

$906KLM

Find Deal

Sun, Aug 24 - Sun, Aug 31

10:40 pm - 8:28 pmBFS-SEA

29h 48m3 stops

3:45 pm - 11:20 pmSEA-BFS

23h 35m3 stops

$929

Find Deal

Sun, Aug 24 - Sun, Aug 31

3:55 pm - 1:50 pmBFS-SEA

29h 55m2 stops

4:00 pm - 10:20 pmSEA-BFS

22h 20m2 stops

$932

Find Deal

Sat, Aug 30 - Wed, Sep 10

7:00 pm - 8:02 pmBHD-SEA

33h 02m2 stops

10:11 am - 1:30 pmSEA-BHD

19h 19m2 stops

$984British Airways

Find Deal

Sat, Aug 30 - Wed, Sep 10

7:00 pm - 11:30 amBHD-SEA

24h 30m1 stop

10:11 am - 11:55 amSEA-BHD

17h 44m2 stops

$1,004British Airways

Find Deal

Useful Info

Low season	May
High season	March
Cheapest flight	$820

Best time to beat the crowds with an average 31% drop in price.

Most popular time to fly and prices are also 17% lower on average.

Flight from Belfast City 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.

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)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

$820 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.

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