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

You can take advantage of momondo’s Price Alerts by first searching for your flights to Seattle from Northern Ireland . 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 Seattle to Northern Ireland with momondo?

Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore” . Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

How does momondo find its flight prices?

We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

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

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

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Northern Ireland.

What documentation or ID do you need to fly to Northern Ireland?

The necessary travel and health documents for your Northern Ireland trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$627 Cheap Flights from Seattle to Northern Ireland in 2026

1 adult

0 bags

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Find the cheapest flights from Seattle to Northern Ireland

Round-trip

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:35 pm - 2:15 pm

SEA

BHD

16h 40m

1 stop

6:35 am - 5:55 pm

BHD

SEA

18h 20m

1 stop

$627British Airways

Sat, Mar 7 - Wed, Mar 18

1:35 pm - 11:10 am

SEA

BHD

13h 35m

1 stop

10:00 am - 12:24 am

BHD

SEA

21h 24m

2 stops

$631British Airways

Sat, Mar 7 - Tue, Mar 17

6:50 pm - 7:10 pm

SEA

BHD

16h 20m

1 stop

5:35 pm - 5:55 pm

BHD

SEA

31h 20m

1 stop

$632British Airways

Wed, Mar 4 - Sun, Mar 8

8:20 pm - 6:10 pm

SEA

BHD

13h 50m

1 stop

8:10 pm - 11:35 am

BHD

SEA

23h 25m

1 stop

$738British Airways

Fri, Apr 24 - Sun, May 3

1:29 pm - 3:30 pm

SEA

BHD

18h 01m

2 stops

8:10 pm - 11:35 am

BHD

SEA

23h 25m

1 stop

$742British Airways

Fri, Apr 24 - Sun, May 3

1:29 pm - 3:30 pm

SEA

BHD

18h 01m

2 stops

6:30 am - 10:26 pm

BHD

SEA

23h 56m

2 stops

$745British Airways

Fri, Apr 24 - Sun, May 3

7:10 am - 4:50 pm

SEA

BHD

25h 40m

2 stops

6:30 am - 6:58 pm

BHD

SEA

19h 28m

2 stops

$767Delta

Sat, Mar 7 - Tue, Mar 17

3:00 pm - 4:45 pm

SEA

BFS

18h 45m

2 stops

12:40 pm - 1:10 pm

BFS

SEA

31h 30m

2 stops

$776Multiple Airlines

Mon, Mar 16 - Mon, Mar 23

2:43 pm - 2:15 pm

SEA

BHD

15h 32m

2 stops

8:25 pm - 5:55 pm

BHD

SEA

28h 30m

1 stop

$837British Airways

Wed, Mar 4 - Sun, Mar 8

6:50 pm - 4:35 pm

SEA

BHD

13h 45m

1 stop

8:25 pm - 12:24 am

BHD

SEA

34h 59m

2 stops

$841British Airways

Wed, Mar 4 - Sun, Mar 8

Aer Lingus flights from Seattle to Northern Ireland

Our best Aer Lingus deals on Seattle to Northern Ireland flight tickets

Aer Lingus

Mar 23

SEA9:05 pmSeattle/Tacoma Intl

29h 10m

2 stops

BHD9:15 amBelfast City

Mar 27

BHD10:35 amBelfast City

15h 45m

2 stops

SEA7:20 pmSeattle/Tacoma Intl

$1,128

Aer Lingus

Jul 15

SEA1:35 pmSeattle/Tacoma Intl

14h 25m

1 stop

BHD12:00 pmBelfast City

Jul 18

BHD7:00 amBelfast City

18h 10m

2 stops

SEA5:10 pmSeattle/Tacoma Intl

$6,477

Aer Lingus

Jul 15

SEA6:55 pmSeattle/Tacoma Intl

14h 50m

2 stops

BHD5:45 pmBelfast City

Jul 18

BHD7:05 pmBelfast City

30h 05m

2 stops

SEA5:10 pmSeattle/Tacoma Intl

$6,960

British Airways flights from Seattle to Northern Ireland

Our best British Airways deals on Seattle to Northern Ireland flight tickets

British Airways

Mar 7

SEA1:35 pmSeattle/Tacoma Intl

16h 40m

1 stop

BHD2:15 pmBelfast City

Mar 18

BHD6:35 amBelfast City

18h 20m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$627

British Airways

Mar 7

SEA1:35 pmSeattle/Tacoma Intl

13h 35m

1 stop

BHD11:10 amBelfast City

Mar 17

BHD10:00 amBelfast City

21h 24m

2 stops

SEA12:24 amSeattle/Tacoma Intl

$631

British Airways

Mar 4

SEA6:50 pmSeattle/Tacoma Intl

16h 20m

1 stop

BHD7:10 pmBelfast City

Mar 8

BHD5:35 pmBelfast City

31h 20m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$632

Fly from

Fly to

Route

Depart

Return

Price

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

1:35 pm-2:15 pm

1 stop16h 40m

Belfast City

Wed 3/18

6:35 am-5:55 pm

1 stop18h 20m

$627

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

1:35 pm-11:10 am

1 stop13h 35m

Belfast City

Tue 3/17

10:00 am-12:24 am

2 stops21h 24m

$631

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/4

6:50 pm-7:10 pm

1 stop16h 20m

Belfast City

Sun 3/8

5:35 pm-5:55 pm

1 stop31h 20m

$632

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 4/24

8:20 pm-6:10 pm

1 stop13h 50m

Belfast City

Sun 5/3

8:10 pm-11:35 am

1 stop23h 25m

$738

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 4/24

1:29 pm-3:30 pm

2 stops18h 01m

Belfast City

Sun 5/3

8:10 pm-11:35 am

1 stop23h 25m

$742

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 4/24

1:29 pm-3:30 pm

2 stops18h 01m

Belfast City

Sun 5/3

6:30 am-10:26 pm

2 stops23h 56m

$745

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

7:10 am-4:50 pm

2 stops25h 40m

Belfast City

Tue 3/17

6:30 am-6:58 pm

2 stops19h 28m

$767

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Mon 3/16

3:00 pm-4:45 pm

2 stops18h 45m

Belfast Intl

Mon 3/23

12:40 pm-1:10 pm

2 stops31h 30m

$776

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/4

2:43 pm-2:15 pm

2 stops15h 32m

Belfast City

Sun 3/8

8:25 pm-5:55 pm

1 stop28h 30m

$837

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/4

6:50 pm-4:35 pm

1 stop13h 45m

Belfast City

Sun 3/8

8:25 pm-12:24 am

2 stops34h 59m

$841

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Seattle to Northern Ireland flight deals and tips

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

Fastest flight time	13h 35m
Direct flights	None

The fastest flight from Seattle to Northern Ireland takes 13h 35m

There are no direct flights from Seattle to Northern Ireland. There are no popular flight routes from Seattle to Northern Ireland.

Search flight deals

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Northern Ireland?
Prices for flights from Seattle/Tacoma Intl Airport to Northern Ireland are updated daily.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Northern Ireland?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Northern Ireland.
What documentation or ID do you need to fly to Northern Ireland?
The necessary travel and health documents for your Northern Ireland trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

How do I get Price Alerts for flights from Seattle to Northern Ireland?
You can take advantage of momondo’s Price Alerts by first searching for your flights to Seattle from Northern Ireland. 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 Seattle to Northern Ireland with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

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

Finding the right flight to Northern Ireland from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Northern Ireland quick and easy, saving you time and money.

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

Flights from Seattle to Northern Ireland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Northern Ireland.

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

Yes. momondo can track prices for Seattle to Northern Ireland flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.