Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Northern Ireland to Seattle from £485

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.
British Airways Logo
09:15 - 16:50BHD  Belfast City-SEA Seattle/Tacoma Intl
15h 35m1 stop London Heathrow
British Airways Logo
18:45 - 19:05SEA  Seattle/Tacoma Intl-BHD Belfast City
16h 20m1 stop London Heathrow
£693British Airways
Wed, 2 Dec - Wed, 9 Dec
British Airways Logo
11:40 - 16:50BHD  Belfast City-SEA Seattle/Tacoma Intl
13h 10m1 stop London Heathrow
British Airways Logo
09:15 - 10:05SEA  Seattle/Tacoma Intl-BHD Belfast City
16h 50m2 stops Philadelphia London Heathrow
£704British Airways
Wed, 2 Dec - Wed, 9 Dec
British Airways Logo
11:40 - 00:47BHD  Belfast City-SEA Seattle/Tacoma Intl
21h 07m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
14:07 - 16:55SEA  Seattle/Tacoma Intl-BHD Belfast City
18h 48m2 stops Dallas/Fort Worth London Heathrow
£710British Airways
Wed, 2 Dec - Wed, 9 Dec
British Airways Logo
06:35 - 11:25BHD  Belfast City-SEA Seattle/Tacoma Intl
12h 50m1 stop London Heathrow
British Airways Logo
13:35 - 12:55SEA  Seattle/Tacoma Intl-BHD Belfast City
15h 20m1 stop London Heathrow
£713British Airways
Sat, 20 Feb - Mon, 5 Jul
British Airways Logo
11:45 - 00:34BHD  Belfast City-SEA Seattle/Tacoma Intl
20h 49m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
20:20 - 17:30SEA  Seattle/Tacoma Intl-BHD Belfast City
13h 10m1 stop London Heathrow
£740British Airways
Sat, 20 Feb - Mon, 5 Jul
KLM Logo
17:20 - 16:00BHD  Belfast City-SEA Seattle/Tacoma Intl
30h 40m2 stops Amsterdam Schiphol Portland
KLM Logo
17:45 - 16:55SEA  Seattle/Tacoma Intl-BHD Belfast City
15h 10m2 stops Salt Lake City Amsterdam Schiphol
£755KLM
Sat, 20 Feb - Mon, 5 Jul
British Airways Logo
06:35 - 11:25BHD  Belfast City-SEA Seattle/Tacoma Intl
12h 50m1 stop London Heathrow
British Airways Logo
13:40 - 11:10SEA  Seattle/Tacoma Intl-BHD Belfast City
13h 30m1 stop London Heathrow
£758British Airways
Sat, 20 Feb - Sat, 20 Feb
British Airways Logo
11:05 - 16:50BHD  Belfast City-SEA Seattle/Tacoma Intl
13h 45m1 stop London Heathrow
British Airways Logo
10:17 - 16:50SEA  Seattle/Tacoma Intl-BHD Belfast City
22h 33m2 stops Chicago O'Hare Intl London Heathrow
£762British Airways
Thu, 14 Jan - Sun, 17 Jan
British Airways Logo
06:30 - 16:50BHD  Belfast City-SEA Seattle/Tacoma Intl
18h 20m1 stop London Heathrow
British Airways Logo
18:45 - 18:50SEA  Seattle/Tacoma Intl-BHD Belfast City
16h 05m1 stop London Heathrow
£762British Airways
Thu, 21 Jan - Sun, 24 Jan
British Airways Logo
11:05 - 16:50BHD  Belfast City-SEA Seattle/Tacoma Intl
13h 45m1 stop London Heathrow
British Airways Logo
10:17 - 16:50SEA  Seattle/Tacoma Intl-BHD Belfast City
22h 33m2 stops Chicago O'Hare Intl London Heathrow
£763British Airways
Thu, 21 Jan - Sun, 24 Jan

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

British Airways flights from Northern Ireland to Seattle

Our best British Airways deals on Northern Ireland to Seattle flight tickets
British Airways
2 Dec
BHD09:15Belfast City
15h 35m
1 stop
SEA16:50Seattle/Tacoma Intl
9 Dec
SEA18:45Seattle/Tacoma Intl
16h 20m
1 stop
BHD19:05Belfast City
£693
British Airways
20 Mar
BHD11:45Belfast City
13h 05m
1 stop
SEA17:50Seattle/Tacoma Intl
30 Mar
SEA20:20Seattle/Tacoma Intl
14h 35m
1 stop
BHD18:55Belfast City
£703
British Airways
2 Dec
BHD11:40Belfast City
13h 10m
1 stop
SEA16:50Seattle/Tacoma Intl
9 Dec
SEA09:15Seattle/Tacoma Intl
16h 50m
2 stops
BHD10:05Belfast City
£704

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 2/12

09:15-16:50

1 stop15h 35m

Seattle/Tacoma Intl

Wed 9/12

18:45-19:05

1 stop16h 20m

£693

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 2/12

11:40-16:50

1 stop13h 10m

Seattle/Tacoma Intl

Wed 9/12

09:15-10:05

2 stops16h 50m

£704

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 2/12

11:40-00:47

2 stops21h 07m

Seattle/Tacoma Intl

Wed 9/12

14:07-16:55

2 stops18h 48m

£710

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Sat 20/2

06:35-11:25

1 stop12h 50m

Seattle/Tacoma Intl

Mon 5/7

13:35-12:55

1 stop15h 20m

£713

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Sat 20/2

11:45-00:34

2 stops20h 49m

Seattle/Tacoma Intl

Mon 5/7

20:20-17:30

1 stop13h 10m

£740

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Sat 20/2

17:20-16:00

2 stops30h 40m

Seattle/Tacoma Intl

Mon 5/7

17:45-16:55

2 stops15h 10m

£755
Fastest return journey

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Sat 20/2

06:35-11:25

1 stop12h 50m

Seattle/Tacoma Intl

Sat 20/2

13:40-11:10

1 stop13h 30m

£758

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 14/1

11:05-16:50

1 stop13h 45m

Seattle/Tacoma Intl

Sun 17/1

10:17-16:50

2 stops22h 33m

£762

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 21/1

06:30-16:50

1 stop18h 20m

Seattle/Tacoma Intl

Sun 24/1

18:45-18:50

1 stop16h 05m

£762

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 21/1

11:05-16:50

1 stop13h 45m

Seattle/Tacoma Intl

Sun 24/1

10:17-16:50

2 stops22h 33m

£763

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

See travel insights to Seattle from

How to get the cheapest flight ticket from Northern Ireland to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Northern Ireland to Seattle/Tacoma Intl?

British Airways is the most popular carrier operating from Northern Ireland to Seattle/Tacoma Intl

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

£485

Fastest flight time

12h 50m

Direct flights

None
The best one-way flight to Seattle from Northern Ireland in the past 72 hours is £485. The best return flight deal from Northern Ireland to Seattle found on momondo in the last 72 hours is £693.
The fastest flight from Northern Ireland to Seattle takes 12h 50m
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.

Travelling to a place near Seattle?

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

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.

An easier way to manage your Seattle trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 5/12
Sat 12/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States