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.

$818 Cheap Flights from Seattle to Northern Ireland in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

5:45 pm - 9:20 amSEA Seattle/Tacoma Intl-BHD Belfast City

31h 35m1 stop Amsterdam Schiphol

5:15 pm - 11:47 amBHD Belfast City-SEA Seattle/Tacoma Intl

26h 32m1 stop Amsterdam Schiphol

$818Delta

Sun, Oct 11 - Wed, Nov 4

12:30 pm - 4:55 pmSEA Seattle/Tacoma Intl-BHD Belfast City

20h 25m2 stops Los Angeles Amsterdam Schiphol

9:40 am - 11:47 amBHD Belfast City-SEA Seattle/Tacoma Intl

34h 07m1 stop Amsterdam Schiphol

$822Delta

Sun, Oct 11 - Wed, Nov 4

5:45 pm - 4:55 pmSEA Seattle/Tacoma Intl-BHD Belfast City

15h 10m1 stop Amsterdam Schiphol

9:40 am - 4:37 pmBHD Belfast City-SEA Seattle/Tacoma Intl

38h 57m2 stops Amsterdam Schiphol San Francisco

$828Delta

Sun, Oct 11 - Mon, Nov 2

7:32 am - 4:55 pmSEA Seattle/Tacoma Intl-BHD Belfast City

25h 23m2 stops Los Angeles Amsterdam Schiphol

5:15 pm - 7:02 pmBHD Belfast City-SEA Seattle/Tacoma Intl

33h 47m2 stops Amsterdam Schiphol Salt Lake City

$832Delta

Sun, Oct 11 - Tue, Nov 3

9:35 pm - 4:55 pmSEA Seattle/Tacoma Intl-BHD Belfast City

35h 20m2 stops Los Angeles Amsterdam Schiphol

9:40 am - 11:47 amBHD Belfast City-SEA Seattle/Tacoma Intl

34h 07m1 stop Amsterdam Schiphol

$833Delta

Sat, Oct 10 - Wed, Nov 4

9:35 pm - 4:55 pmSEA Seattle/Tacoma Intl-BHD Belfast City

35h 20m2 stops Los Angeles Amsterdam Schiphol

9:40 am - 8:27 pmBHD Belfast City-SEA Seattle/Tacoma Intl

42h 47m2 stops Amsterdam Schiphol Los Angeles

$838Delta

Sat, Oct 10 - Mon, Nov 2

1:45 pm - 4:55 pmSEA Seattle/Tacoma Intl-BHD Belfast City

19h 10m1 stop Amsterdam Schiphol

9:40 am - 11:47 amBHD Belfast City-SEA Seattle/Tacoma Intl

34h 07m1 stop Amsterdam Schiphol

$868Delta

Fri, Oct 9 - Wed, Nov 4

11:05 am - 4:55 pmSEA Seattle/Tacoma Intl-BHD Belfast City

21h 50m2 stops Salt Lake City Amsterdam Schiphol

5:15 pm - 11:47 amBHD Belfast City-SEA Seattle/Tacoma Intl

26h 32m1 stop Amsterdam Schiphol

$872Delta

Sun, Oct 11 - Sun, Nov 8

1:45 pm - 4:55 pmSEA Seattle/Tacoma Intl-BHD Belfast City

19h 10m1 stop Amsterdam Schiphol

9:40 am - 4:37 pmBHD Belfast City-SEA Seattle/Tacoma Intl

38h 57m2 stops Amsterdam Schiphol San Francisco

$878Delta

Fri, Oct 9 - Mon, Nov 2

6:45 pm - 4:50 pmSEA Seattle/Tacoma Intl-BHD Belfast City

14h 05m1 stop London Heathrow

11:05 am - 4:50 pmBHD Belfast City-SEA Seattle/Tacoma Intl

13h 45m1 stop London Heathrow

$883British Airways

Sun, Jan 17 - Thu, Jan 21

Save money when you book flights with momondo

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Aer Lingus flights from Seattle to Northern Ireland

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

Aer Lingus

Oct 5

SEA8:20 pmSeattle/Tacoma Intl

13h 10m

1 stop

BHD5:30 pmBelfast City

Oct 22

BHD9:35 amBelfast City

16h 50m

1 stop

SEA6:25 pmSeattle/Tacoma Intl

$942

Aer Lingus

Oct 5

SEA7:10 pmSeattle/Tacoma Intl

16h 55m

2 stops

BHD8:05 pmBelfast City

Oct 22

BHD9:50 amBelfast City

15h 20m

2 stops

SEA5:10 pmSeattle/Tacoma Intl

$1,112

Aer Lingus

Oct 5

SEA7:10 pmSeattle/Tacoma Intl

16h 55m

2 stops

BHD8:05 pmBelfast City

Oct 22

BHD9:50 amBelfast City

15h 20m

2 stops

SEA5:10 pmSeattle/Tacoma Intl

$1,113

Delta flights from Seattle to Northern Ireland

Our best Delta deals on Seattle to Northern Ireland flight tickets

Delta

Oct 11

SEA5:45 pmSeattle/Tacoma Intl

31h 35m

1 stop

BHD9:20 amBelfast City

Nov 4

BHD5:15 pmBelfast City

26h 32m

1 stop

SEA11:47 amSeattle/Tacoma Intl

$818

Delta

Oct 11

SEA12:30 pmSeattle/Tacoma Intl

20h 25m

2 stops

BHD4:55 pmBelfast City

Nov 4

BHD9:40 amBelfast City

34h 07m

1 stop

SEA11:47 amSeattle/Tacoma Intl

$822

Delta

Oct 11

SEA5:45 pmSeattle/Tacoma Intl

31h 35m

1 stop

BHD9:20 amBelfast City

Nov 3

BHD5:15 pmBelfast City

36h 50m

2 stops

SEA10:05 pmSeattle/Tacoma Intl

$828

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 10/11

5:45 pm-9:20 am

1 stop31h 35m

Belfast City

Wed 11/4

5:15 pm-11:47 am

1 stop26h 32m

$818

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 10/11

12:30 pm-4:55 pm

2 stops20h 25m

Belfast City

Wed 11/4

9:40 am-11:47 am

1 stop34h 07m

$822

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 10/11

5:45 pm-4:55 pm

1 stop15h 10m

Belfast City

Mon 11/2

9:40 am-4:37 pm

2 stops38h 57m

$828

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 10/11

7:32 am-4:55 pm

2 stops25h 23m

Belfast City

Tue 11/3

5:15 pm-7:02 pm

2 stops33h 47m

$832

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sat 10/10

9:35 pm-4:55 pm

2 stops35h 20m

Belfast City

Wed 11/4

9:40 am-11:47 am

1 stop34h 07m

$833

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sat 10/10

9:35 pm-4:55 pm

2 stops35h 20m

Belfast City

Mon 11/2

9:40 am-8:27 pm

2 stops42h 47m

$838

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Fri 10/9

1:45 pm-4:55 pm

1 stop19h 10m

Belfast City

Wed 11/4

9:40 am-11:47 am

1 stop34h 07m

$868

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 10/11

11:05 am-4:55 pm

2 stops21h 50m

Belfast City

Sun 11/8

5:15 pm-11:47 am

1 stop26h 32m

$872

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Fri 10/9

1:45 pm-4:55 pm

1 stop19h 10m

Belfast City

Mon 11/2

9:40 am-4:37 pm

2 stops38h 57m

$878

Quickest round-trip

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 1/17

6:45 pm-4:50 pm

1 stop14h 05m

Belfast City

Thu 1/21

11:05 am-4:50 pm

1 stop13h 45m

$883

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

Best Price Found	$818
Fastest flight time	15h 05m
Direct flights	None

The best flight deal from Seattle to Northern Ireland found on momondo in the last 72 hours is $818

The fastest flight from Seattle to Northern Ireland takes 15h 05m

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

Search flight deals

Frequently asked questions about flying from Seattle to Northern Ireland

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.

Best airlines flying from Seattle to Northern Ireland

Compare and see reviews for airlines that fly from Seattle to Northern Ireland with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $822	Free Cancellation	Rating 6.7 8,236 reviews		Search British Airways flights

Frequently asked questions about flying from Seattle to Northern Ireland

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.