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Cheap flights from Northern Ireland to Seattle from £490

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
10:00 - 20:14BFS  Belfast Intl-SEA Seattle/Tacoma Intl
18h 14m1 stop London Luton
Multiple Airlines Logo
17:30 - 18:50SEA  Seattle/Tacoma Intl-BFS Belfast Intl
17h 20m1 stop London Heathrow
£490Multiple Airlines
Mon, 12 Oct - Mon, 19 Oct
Multiple Airlines Logo
07:00 - 20:14BHD  Belfast City-SEA Seattle/Tacoma Intl
21h 14m1 stop London Gatwick
Multiple Airlines Logo
17:30 - 20:30SEA  Seattle/Tacoma Intl-BHD Belfast City
19h 00m1 stop London Heathrow
£508Multiple Airlines
Mon, 12 Oct - Mon, 19 Oct
British Airways Logo
09:15 - 16:50BHD  Belfast City-SEA Seattle/Tacoma Intl
15h 35m1 stop London Heathrow
British Airways Logo
18:45 - 17:25SEA  Seattle/Tacoma Intl-BHD Belfast City
14h 40m1 stop London Heathrow
£564British Airways
Wed, 18 Nov - Fri, 11 Dec
Multiple Airlines Logo
06:55 - 09:32BFS  Belfast Intl-SEA Seattle/Tacoma Intl
34h 37m3 stops Paris Charles de Gaulle Calgary Vancouver Intl
Multiple Airlines Logo
14:35 - 22:35SEA  Seattle/Tacoma Intl-BFS Belfast Intl
24h 00m2 stops Reykjavik Keflavik Intl Manchester
£564Multiple Airlines
Wed, 18 Nov - Fri, 11 Dec
British Airways Logo
17:35 - 11:25BHD  Belfast City-SEA Seattle/Tacoma Intl
25h 50m1 stop London Heathrow
British Airways Logo
09:15 - 10:55SEA  Seattle/Tacoma Intl-BHD Belfast City
17h 40m2 stops Philadelphia London Heathrow
£566British Airways
Wed, 18 Nov - Fri, 11 Dec
Multiple Airlines Logo
06:30 - 11:35BHD  Belfast City-SEA Seattle/Tacoma Intl
13h 05m1 stop London Heathrow
Multiple Airlines Logo
10:31 - 12:55SEA  Seattle/Tacoma Intl-BHD Belfast City
18h 24m2 stops Chicago O'Hare Intl London Heathrow
£568Multiple Airlines
Mon, 12 Oct - Mon, 19 Oct
British Airways Logo
12:20 - 00:35BHD  Belfast City-SEA Seattle/Tacoma Intl
20h 15m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
06:14 - 10:55SEA  Seattle/Tacoma Intl-BHD Belfast City
20h 41m2 stops Chicago O'Hare Intl London Heathrow
£576British Airways
Wed, 18 Nov - Fri, 11 Dec
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
£598British Airways
Thu, 15 Oct - Mon, 19 Oct
British Airways Logo
20:35 - 11:35BHD  Belfast City-SEA Seattle/Tacoma Intl
23h 00m1 stop London Heathrow
British Airways Logo
20:20 - 20:35SEA  Seattle/Tacoma Intl-BHD Belfast City
16h 15m1 stop London Heathrow
£598British Airways
Thu, 15 Oct - Mon, 19 Oct
Multiple Airlines Logo
06:55 - 09:32BFS  Belfast Intl-SEA Seattle/Tacoma Intl
34h 37m3 stops Paris Charles de Gaulle Calgary Vancouver Intl
Multiple Airlines Logo
14:35 - 22:35SEA  Seattle/Tacoma Intl-BFS Belfast Intl
24h 00m3 stops Reykjavik Keflavik Intl Berlin Brandenburg Manchester
£599Multiple Airlines
Wed, 18 Nov - Fri, 11 Dec

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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
18 Nov
BHD09:15Belfast City
15h 35m
1 stop
SEA16:50Seattle/Tacoma Intl
11 Dec
SEA18:45Seattle/Tacoma Intl
14h 40m
1 stop
BHD17:25Belfast City
£564
British Airways
18 Nov
BHD17:35Belfast City
25h 50m
1 stop
SEA11:25Seattle/Tacoma Intl
11 Dec
SEA09:15Seattle/Tacoma Intl
17h 40m
2 stops
BHD10:55Belfast City
£566
British Airways
18 Nov
BHD12:20Belfast City
20h 15m
2 stops
SEA00:35Seattle/Tacoma Intl
11 Dec
SEA06:14Seattle/Tacoma Intl
20h 41m
2 stops
BHD10:55Belfast City
£576

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

Mon 12/10

10:00-20:14

1 stop18h 14m

Seattle/Tacoma Intl

Mon 19/10

17:30-18:50

1 stop17h 20m

£490

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Mon 12/10

07:00-20:14

1 stop21h 14m

Seattle/Tacoma Intl

Mon 19/10

17:30-20:30

1 stop19h 00m

£508
Fastest return journey

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 18/11

09:15-16:50

1 stop15h 35m

Seattle/Tacoma Intl

Fri 11/12

18:45-17:25

1 stop14h 40m

£564

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Wed 18/11

06:55-09:32

3 stops34h 37m

Seattle/Tacoma Intl

Fri 11/12

14:35-22:35

2 stops24h 00m

£564

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 18/11

17:35-11:25

1 stop25h 50m

Seattle/Tacoma Intl

Fri 11/12

09:15-10:55

2 stops17h 40m

£566

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Mon 12/10

06:30-11:35

1 stop13h 05m

Seattle/Tacoma Intl

Mon 19/10

10:31-12:55

2 stops18h 24m

£568

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 18/11

12:20-00:35

2 stops20h 15m

Seattle/Tacoma Intl

Fri 11/12

06:14-10:55

2 stops20h 41m

£576

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

£598

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

20:20-20:35

1 stop16h 15m

£598

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Wed 18/11

06:55-09:32

3 stops34h 37m

Seattle/Tacoma Intl

Fri 11/12

14:35-22:35

3 stops24h 00m

£599

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

£490

Fastest flight time

13h 05m

Direct flights

None
The best flight deal from Northern Ireland to Seattle found on momondo in the last 72 hours is £490
The fastest flight from Northern Ireland to Seattle takes 13h 05m
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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