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Cheap flights from Northern Ireland to Seattle from £409

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Northern Ireland to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
13:00 - 17:55BFS  Belfast Intl-SEA Seattle/Tacoma Intl
36h 55m2 stops London Luton Reykjavik Keflavik Intl
Multiple Airlines Logo
15:40 - 18:50SEA  Seattle/Tacoma Intl-BFS Belfast Intl
19h 10m2 stops Reykjavik Keflavik Intl London Heathrow
£409Multiple Airlines
Thu, 8 Oct - Mon, 12 Oct
Multiple Airlines Logo
06:35 - 19:00BFS  Belfast Intl-SEA Seattle/Tacoma Intl
20h 25m1 stop London Stansted
Multiple Airlines Logo
21:40 - 23:10SEA  Seattle/Tacoma Intl-BFS Belfast Intl
17h 30m1 stop London Heathrow
£481Multiple Airlines
Thu, 8 Oct - Mon, 12 Oct
Multiple Airlines Logo
07:00 - 20:40BHD  Belfast City-SEA Seattle/Tacoma Intl
21h 40m2 stops London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
19:00 - 20:30SEA  Seattle/Tacoma Intl-BHD Belfast City
17h 30m2 stops Reykjavik Keflavik Intl London Gatwick
£518Multiple Airlines
Thu, 8 Oct - Mon, 12 Oct
KLM Logo
09:50 - 16:35BHD  Belfast City-SEA Seattle/Tacoma Intl
14h 45m1 stop Amsterdam Schiphol
KLM Logo
17:45 - 16:55SEA  Seattle/Tacoma Intl-BHD Belfast City
15h 10m1 stop Amsterdam Schiphol
£573KLM
Thu, 8 Oct - Mon, 12 Oct
British Airways Logo
20:35 - 11:35BHD  Belfast City-SEA Seattle/Tacoma Intl
23h 00m1 stop London Heathrow
British Airways Logo
15:14 - 15:30SEA  Seattle/Tacoma Intl-BHD Belfast City
16h 16m2 stops Chicago O'Hare Intl London Heathrow
£599British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
06:30 - 11:35BHD  Belfast City-SEA Seattle/Tacoma Intl
13h 05m1 stop London Heathrow
British Airways Logo
20:20 - 19:25SEA  Seattle/Tacoma Intl-BHD Belfast City
15h 05m1 stop London Heathrow
£599British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
12:45 - 18:25BHD  Belfast City-SEA Seattle/Tacoma Intl
13h 40m1 stop London Heathrow
British Airways Logo
10:31 - 15:30SEA  Seattle/Tacoma Intl-BHD Belfast City
20h 59m2 stops Chicago O'Hare Intl London Heathrow
£600British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
09:35 - 20:15BHD  Belfast City-SEA Seattle/Tacoma Intl
18h 40m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
15:14 - 19:25SEA  Seattle/Tacoma Intl-BHD Belfast City
20h 11m2 stops Chicago O'Hare Intl London Heathrow
£602British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
09:35 - 20:15BHD  Belfast City-SEA Seattle/Tacoma Intl
18h 40m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
15:14 - 19:25SEA  Seattle/Tacoma Intl-BHD Belfast City
20h 11m2 stops Chicago O'Hare Intl London Heathrow
£603British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
09:35 - 20:15BHD  Belfast City-SEA Seattle/Tacoma Intl
18h 40m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
15:14 - 19:25SEA  Seattle/Tacoma Intl-BHD Belfast City
20h 11m2 stops Chicago O'Hare Intl London Heathrow
£604British Airways
Thu, 15 Oct - Mon, 19 Oct

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British Airways flights from Northern Ireland to Seattle

Our best British Airways deals on Northern Ireland to Seattle flight tickets
British Airways
15 Oct
BHD20:35Belfast City
23h 00m
1 stop
SEA11:35Seattle/Tacoma Intl
19 Oct
SEA15:14Seattle/Tacoma Intl
16h 16m
2 stops
BHD15:30Belfast City
£599
British Airways
15 Oct
BHD06:30Belfast City
13h 05m
1 stop
SEA11:35Seattle/Tacoma Intl
19 Oct
SEA20:20Seattle/Tacoma Intl
15h 05m
1 stop
BHD19:25Belfast City
£599
British Airways
15 Oct
BHD12:45Belfast City
13h 40m
1 stop
SEA18:25Seattle/Tacoma Intl
19 Oct
SEA10:31Seattle/Tacoma Intl
20h 59m
2 stops
BHD15:30Belfast City
£600

momondo Fare Finder

 
Use the filters below to find and compare flights from Northern Ireland to Seattle that are best for you.

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Route

Depart

Return

Price

Cheapest return flight

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Thu 8/10

13:00-17:55

2 stops36h 55m

Seattle/Tacoma Intl

Mon 12/10

15:40-18:50

2 stops19h 10m

£409

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Thu 8/10

06:35-19:00

1 stop20h 25m

Seattle/Tacoma Intl

Mon 12/10

21:40-23:10

1 stop17h 30m

£481

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 8/10

07:00-20:40

2 stops21h 40m

Seattle/Tacoma Intl

Mon 12/10

19:00-20:30

2 stops17h 30m

£518

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 8/10

09:50-16:35

1 stop14h 45m

Seattle/Tacoma Intl

Mon 12/10

17:45-16:55

1 stop15h 10m

£573

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

20:35-11:35

1 stop23h 00m

Seattle/Tacoma Intl

Mon 19/10

15:14-15:30

2 stops16h 16m

£599
Fastest return journey

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

06:30-11:35

1 stop13h 05m

Seattle/Tacoma Intl

Mon 19/10

20:20-19:25

1 stop15h 05m

£599

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

12:45-18:25

1 stop13h 40m

Seattle/Tacoma Intl

Mon 19/10

10:31-15:30

2 stops20h 59m

£600

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

09:35-20:15

2 stops18h 40m

Seattle/Tacoma Intl

Mon 19/10

15:14-19:25

2 stops20h 11m

£602

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

09:35-20:15

2 stops18h 40m

Seattle/Tacoma Intl

Mon 19/10

15:14-19:25

2 stops20h 11m

£603

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 15/10

09:35-20:15

2 stops18h 40m

Seattle/Tacoma Intl

Mon 19/10

15:14-19:25

2 stops20h 11m

£604

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Cheap Northern Ireland to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to Seattle

Best price found

£409

Fastest flight time

13h 45m

Direct flights

None
The best flight deal from Northern Ireland to Seattle found on momondo in the last 72 hours is £409
The fastest flight from Northern Ireland to Seattle takes 13h 45m
There are no direct flights from Northern Ireland to Seattle. There are no popular flight routes from Northern Ireland to Seattle.
Search flight deals

Frequently asked questions about flying from Northern Ireland to Seattle

  • When did momondo last update prices for flights from Northern Ireland to Seattle/Tacoma Intl Airport?

    Prices for flights from Northern Ireland to Seattle/Tacoma Intl Airport refresh daily.

  • How old do you have to be to fly from Northern Ireland to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Northern Ireland to Seattle

  • How do I get Price Alerts for flights from Northern Ireland to Seattle?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Northern Ireland from Seattle. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Northern Ireland to Seattle with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Westport
Kirkland
Ashford
Tacoma
SeaTac
Kent
Tukwila
Fife

Why use momondo?

Why should I use momondo to find a flight deal from Northern Ireland to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Northern Ireland to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Northern Ireland to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from Northern Ireland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Northern Ireland to Seattle?

momondo helps you find the best flight between Northern Ireland and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Northern Ireland to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from Northern Ireland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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