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 are updated 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 you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$680 Cheap Flights from Northern Ireland to Seattle in 2025/26

1 adult

0 bags

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Find the cheapest flights from Northern Ireland to Seattle

Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:25 pm - 4:55 pm

BHD

SEA

12h 30m1 stop

2:04 pm - 2:15 pm

SEA

BHD

40h 11m2 stops

$680British Airways

Wed, Jan 28 - Sun, Feb 1

6:35 am - 10:07 pm

BHD

SEA

23h 32m2 stops

2:04 pm - 2:15 pm

SEA

BHD

40h 11m2 stops

$684British Airways

Wed, Jan 28 - Sun, Feb 1

7:25 pm - 11:30 am

BHD

SEA

24h 05m1 stop

2:04 pm - 4:05 pm

SEA

BHD

18h 01m2 stops

$695Multiple Airlines

Mon, Jan 12 - Mon, Jan 19

2:40 pm - 5:45 pm

BHD

SEA

35h 05m2 stops

8:04 am - 2:15 pm

SEA

BHD

22h 11m2 stops

$710American Airlines

Mon, Jan 12 - Mon, Jan 19

6:35 am - 4:55 pm

BHD

SEA

18h 20m1 stop

6:50 pm - 4:50 pm

SEA

BHD

14h 00m1 stop

$715British Airways

Wed, Feb 4 - Sun, Feb 8

9:15 am - 4:55 pm

BHD

SEA

15h 40m1 stop

6:50 pm - 9:05 am

SEA

BHD

30h 15m1 stop

$724British Airways

Wed, Jan 28 - Sun, Feb 1

6:35 am - 10:07 pm

BHD

SEA

23h 32m2 stops

8:04 am - 10:20 am

SEA

BHD

18h 16m2 stops

$725British Airways

Wed, Feb 4 - Sun, Feb 8

8:10 am - 5:00 pm

BFS

SEA

16h 50m2 stops

2:35 pm - 5:40 pm

SEA

BFS

19h 05m2 stops

$751Multiple Airlines

Sat, Jan 31 - Sat, Feb 7

9:15 am - 4:55 pm

BHD

SEA

15h 40m1 stop

2:04 pm - 2:15 pm

SEA

BHD

40h 11m2 stops

$843British Airways

Wed, Jan 28 - Sun, Feb 1

6:35 am - 10:07 pm

BHD

SEA

23h 32m2 stops

2:04 pm - 2:15 pm

SEA

BHD

40h 11m2 stops

$849British Airways

Wed, Jan 28 - Sun, Feb 1

British Airways flights from Northern Ireland to Seattle

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

British Airways

Jan 28

BHD12:25 pmBelfast City

12h 30m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

Feb 1

SEA2:04 pmSeattle/Tacoma Intl

40h 11m

2 stops

BHD2:15 pmBelfast City

$680

Find similar

British Airways

Jan 28

BHD6:35 amBelfast City

23h 32m

2 stops

SEA10:07 pmSeattle/Tacoma Intl

Feb 1

SEA2:04 pmSeattle/Tacoma Intl

40h 11m

2 stops

BHD2:15 pmBelfast City

$684

Find similar

British Airways

Mar 4

BHD11:25 amBelfast City

13h 30m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

Mar 8

SEA7:50 pmSeattle/Tacoma Intl

15h 50m

1 stop

BHD6:40 pmBelfast City

$713

Find similar

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

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 1/28

12:25 pm-4:55 pm

1 stop12h 30m

Seattle/Tacoma Intl

Sun 2/1

2:04 pm-2:15 pm

2 stops40h 11m

$680

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 1/28

6:35 am-10:07 pm

2 stops23h 32m

Seattle/Tacoma Intl

Sun 2/1

2:04 pm-2:15 pm

2 stops40h 11m

$684

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 1/12

7:25 pm-11:30 am

1 stop24h 05m

Seattle/Tacoma Intl

Mon 1/19

2:04 pm-4:05 pm

2 stops18h 01m

$695

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 1/12

2:40 pm-5:45 pm

2 stops35h 05m

Seattle/Tacoma Intl

Mon 1/19

8:04 am-2:15 pm

2 stops22h 11m

$710

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 2/4

6:35 am-4:55 pm

1 stop18h 20m

Seattle/Tacoma Intl

Sun 2/8

6:50 pm-4:50 pm

1 stop14h 00m

$715

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 1/28

9:15 am-4:55 pm

1 stop15h 40m

Seattle/Tacoma Intl

Sun 2/1

6:50 pm-9:05 am

1 stop30h 15m

$724

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 2/4

6:35 am-10:07 pm

2 stops23h 32m

Seattle/Tacoma Intl

Sun 2/8

8:04 am-10:20 am

2 stops18h 16m

$725

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Sat 1/31

8:10 am-5:00 pm

2 stops16h 50m

Seattle/Tacoma Intl

Sat 2/7

2:35 pm-5:40 pm

2 stops19h 05m

$751

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 1/28

9:15 am-4:55 pm

1 stop15h 40m

Seattle/Tacoma Intl

Sun 2/1

2:04 pm-2:15 pm

2 stops40h 11m

$843

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 1/28

6:35 am-10:07 pm

2 stops23h 32m

Seattle/Tacoma Intl

Sun 2/1

2:04 pm-2:15 pm

2 stops40h 11m

$849

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Can stopping save me money on Northern Ireland to Seattle flights?

You could potentially save up to 8% on your flight if you consider stops on a Northern Ireland to Seattle flight.

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

Fastest flight time	12h 30m
Direct flights	None

The fastest flight from Northern Ireland to Seattle takes 12h 30m

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

Search flight deals

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 are updated 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 you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Puyallup

Redmond

Tukwila

Cle Elum

Federal Way

Lakewood

Fife

Centralia

Westport

Kirkland

Shoreline

Why use momondo?

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

Finding the right flight to Seattle from Northern Ireland 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 Seattle quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Northern Ireland to Seattle flights to just show those with flexible booking policies.

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

Once all potential Northern Ireland to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Northern Ireland and alert you when they change.