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.

$600 Cheap Flights from Seattle to Northern Ireland in 2025/26

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Find the cheapest flights from Seattle to Northern Ireland

Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:35 pm - 11:10 am

SEA

BHD

13h 35m1 stop

10:00 am - 5:55 pm

BHD

SEA

14h 55m1 stop

$600British Airways

Sat, Mar 7 - Tue, Mar 17

6:50 pm - 7:40 pm

SEA

BHD

16h 50m1 stop

6:35 am - 5:55 pm

BHD

SEA

18h 20m1 stop

$604British Airways

Sat, Mar 7 - Wed, Mar 18

7:15 am - 2:15 pm

SEA

BHD

23h 00m2 stops

6:35 am - 12:30 pm

BHD

SEA

12h 55m1 stop

$619British Airways

Sat, Mar 7 - Tue, Mar 17

7:15 am - 2:15 pm

SEA

BHD

23h 00m2 stops

7:25 pm - 5:55 pm

BHD

SEA

29h 30m1 stop

$620British Airways

Sat, Mar 7 - Wed, Mar 18

7:15 am - 2:15 pm

SEA

BHD

23h 00m2 stops

10:00 am - 10:13 pm

BHD

SEA

19h 13m2 stops

$622British Airways

Sat, Mar 7 - Tue, Mar 17

7:15 am - 2:15 pm

SEA

BHD

23h 00m2 stops

6:35 am - 9:54 pm

BHD

SEA

22h 19m2 stops

$623British Airways

Sat, Mar 7 - Wed, Mar 18

6:50 pm - 5:15 pm

SEA

BHD

14h 25m1 stop

11:25 am - 4:55 pm

BHD

SEA

13h 30m1 stop

$624British Airways

Fri, Jan 30 - Tue, Feb 3

1:35 pm - 10:30 am

SEA

BHD

12h 55m1 stop

11:25 am - 4:55 pm

BHD

SEA

13h 30m1 stop

$625British Airways

Fri, Jan 30 - Tue, Feb 3

2:35 pm - 4:10 pm

SEA

BFS

17h 35m2 stops

7:55 am - 5:00 pm

BFS

SEA

17h 05m2 stops

$667Multiple Airlines

Wed, Jan 28 - Wed, Feb 4

2:35 pm - 10:20 pm

SEA

BFS

23h 45m2 stops

6:30 am - 5:00 pm

BFS

SEA

18h 30m2 stops

$679Multiple Airlines

Thu, Jan 29 - Thu, Feb 5

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

13h 35m

1 stop

BHD11:10 amBelfast City

Mar 17

BHD10:00 amBelfast City

14h 55m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$600

Find similar

British Airways

Mar 7

SEA6:50 pmSeattle/Tacoma Intl

16h 50m

1 stop

BHD7:40 pmBelfast City

Mar 18

BHD6:35 amBelfast City

18h 20m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$604

Find similar

British Airways

Mar 7

SEA7:15 amSeattle/Tacoma Intl

23h 00m

2 stops

BHD2:15 pmBelfast City

Mar 17

BHD6:35 amBelfast City

12h 55m

1 stop

SEA12:30 pmSeattle/Tacoma Intl

$619

Find similar

Aer Lingus flights from Seattle to Northern Ireland

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

Aer Lingus

Feb 18

SEA8:05 pmSeattle/Tacoma Intl

16h 10m

2 stops

BHD8:15 pmBelfast City

Feb 23

BHD6:55 amBelfast City

19h 25m

2 stops

SEA6:20 pmSeattle/Tacoma Intl

$3,694

Find similar

Aer Lingus

Feb 18

SEA6:50 pmSeattle/Tacoma Intl

16h 20m

1 stop

BHD7:10 pmBelfast City

Feb 23

BHD6:55 amBelfast City

19h 25m

2 stops

SEA6:20 pmSeattle/Tacoma Intl

$3,712

Find similar

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

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-5:55 pm

1 stop14h 55m

$600

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

6:50 pm-7:40 pm

1 stop16h 50m

Belfast City

Wed 3/18

6:35 am-5:55 pm

1 stop18h 20m

$604

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

7:15 am-2:15 pm

2 stops23h 00m

Belfast City

Tue 3/17

6:35 am-12:30 pm

1 stop12h 55m

$619

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

7:15 am-2:15 pm

2 stops23h 00m

Belfast City

Wed 3/18

7:25 pm-5:55 pm

1 stop29h 30m

$620

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

7:15 am-2:15 pm

2 stops23h 00m

Belfast City

Tue 3/17

10:00 am-10:13 pm

2 stops19h 13m

$622

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

7:15 am-2:15 pm

2 stops23h 00m

Belfast City

Wed 3/18

6:35 am-9:54 pm

2 stops22h 19m

$623

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 1/30

6:50 pm-5:15 pm

1 stop14h 25m

Belfast City

Tue 2/3

11:25 am-4:55 pm

1 stop13h 30m

$624

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 1/30

1:35 pm-10:30 am

1 stop12h 55m

Belfast City

Tue 2/3

11:25 am-4:55 pm

1 stop13h 30m

$625

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Wed 1/28

2:35 pm-4:10 pm

2 stops17h 35m

Belfast Intl

Wed 2/4

7:55 am-5:00 pm

2 stops17h 05m

$667

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Thu 1/29

2:35 pm-10:20 pm

2 stops23h 45m

Belfast Intl

Thu 2/5

6:30 am-5:00 pm

2 stops18h 30m

$679

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

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 day to depart on your flight to Northern Ireland?

The cheapest day to depart on your flight to Northern Ireland is on a Tuesday when prices can be found for as low as $724. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Northern Ireland for around $1,208.

What is the cheapest time of day to depart on your flight to Northern Ireland?

At noon is the cheapest time of day to fly from Seattle to Northern Ireland when you can find flight prices for as low as $794. Flying to Northern Ireland at noon is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $1,000.

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	12h 55m
Direct flights	None

The fastest flight from Seattle to Northern Ireland takes 12h 55m

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.

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.