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 many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Northern Ireland?

As of October 2025, there is 1 operator available to choose from for flights from Seattle/Tacoma Intl Airport to Northern Ireland.

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.

$657 Cheap Flights from Seattle to Northern Ireland in 2025/26

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6:50 pm - 6:35 pmSEA-BHD

15h 45m1 stop

11:25 am - 4:55 pmBHD-SEA

13h 30m1 stop

$657British Airways

Find Deal

Mon, Dec 1 - Wed, Dec 10

6:50 pm - 4:05 pmSEA-BHD

13h 15m1 stop

8:45 am - 4:55 pmBHD-SEA

16h 10m1 stop

$664British Airways

Find Deal

Mon, Dec 1 - Tue, Dec 9

7:20 am - 9:00 pmSEA-BHD

29h 40m2 stops

6:30 am - 11:50 amBHD-SEA

13h 20m1 stop

$688Virgin Atlantic

Find Deal

Wed, Dec 3 - Sun, Dec 7

7:20 am - 9:00 pmSEA-BHD

29h 40m2 stops

6:30 am - 11:50 amBHD-SEA

13h 20m1 stop

$689Virgin Atlantic

Find Deal

Wed, Dec 3 - Sun, Dec 7

3:05 pm - 9:00 pmSEA-BHD

21h 55m1 stop

5:20 pm - 8:50 pmBHD-SEA

35h 30m2 stops

$694Delta

Find Deal

Mon, Dec 1 - Sun, Dec 7

9:45 pm - 9:00 pmSEA-BHD

39h 15m2 stops

5:20 pm - 12:20 amBHD-SEA

39h 00m2 stops

$704Delta

Find Deal

Mon, Dec 1 - Sun, Dec 7

1:48 pm - 2:50 pmSEA-BHD

18h 02m2 stops

9:15 am - 11:08 pmBHD-SEA

20h 53m2 stops

$736American Airlines

Find Deal

Tue, Mar 17 - Wed, Mar 25

2:35 pm - 5:55 pmSEA-BFS

19h 20m2 stops

6:30 am - 5:00 pmBFS-SEA

18h 30m2 stops

$737Multiple Airlines

Find Deal

Wed, Dec 10 - Wed, Dec 17

1:35 pm - 2:15 pmSEA-BHD

16h 40m1 stop

11:25 am - 12:49 amBHD-SEA

20h 24m2 stops

$787Multiple Airlines

Find Deal

Sat, Mar 7 - Tue, Mar 17

7:50 pm - 5:15 pmSEA-BHD

14h 25m1 stop

4:25 pm - 6:25 pmBHD-SEA

34h 00m1 stop

$972American Airlines

Find Deal

Fri, Mar 27 - Tue, Mar 31

British Airways flights from Seattle to Northern Ireland

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

British Airways

Dec 1

SEA6:50 pmSeattle/Tacoma Intl

15h 45m

1 stop

BHD6:35 pmBelfast City

Dec 10

BHD11:25 amBelfast City

13h 30m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

$657

Find similar

British Airways

Dec 1

SEA6:50 pmSeattle/Tacoma Intl

13h 15m

1 stop

BHD4:05 pmBelfast City

Dec 9

BHD8:45 amBelfast City

16h 10m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

$664

Find similar

British Airways

Dec 3

SEA6:50 pmSeattle/Tacoma Intl

28h 40m

1 stop

BHD7:30 amBelfast City

Dec 7

BHD8:25 pmBelfast City

28h 30m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

$673

Find similar

Virgin Atlantic flights from Seattle to Northern Ireland

Our best Virgin Atlantic deals on Seattle to Northern Ireland flight tickets

Virgin Atlantic

Dec 3

SEA7:20 amSeattle/Tacoma Intl

29h 40m

2 stops

BHD9:00 pmBelfast City

Dec 7

BHD6:30 amBelfast City

13h 20m

1 stop

SEA11:50 amSeattle/Tacoma Intl

$688

Find similar

Virgin Atlantic

Dec 3

SEA7:20 amSeattle/Tacoma Intl

29h 40m

2 stops

BHD9:00 pmBelfast City

Dec 7

BHD6:30 amBelfast City

13h 20m

1 stop

SEA11:50 amSeattle/Tacoma Intl

$689

Find similar

Virgin Atlantic

Dec 3

SEA7:20 amSeattle/Tacoma Intl

29h 40m

2 stops

BHD9:00 pmBelfast City

Dec 7

BHD6:30 amBelfast City

17h 05m

2 stops

SEA3:35 pmSeattle/Tacoma Intl

$698

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 12/1

6:50 pm-6:35 pm

1 stop15h 45m

Belfast City

Wed 12/10

11:25 am-4:55 pm

1 stop13h 30m

$657

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 12/1

6:50 pm-4:05 pm

1 stop13h 15m

Belfast City

Tue 12/9

8:45 am-4:55 pm

1 stop16h 10m

$664

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 12/3

7:20 am-9:00 pm

2 stops29h 40m

Belfast City

Sun 12/7

6:30 am-11:50 am

1 stop13h 20m

$688

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 12/3

7:20 am-9:00 pm

2 stops29h 40m

Belfast City

Sun 12/7

6:30 am-11:50 am

1 stop13h 20m

$689

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 12/1

3:05 pm-9:00 pm

1 stop21h 55m

Belfast City

Sun 12/7

5:20 pm-8:50 pm

2 stops35h 30m

$694

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 12/1

9:45 pm-9:00 pm

2 stops39h 15m

Belfast City

Sun 12/7

5:20 pm-12:20 am

2 stops39h 00m

$704

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 3/17

1:48 pm-2:50 pm

2 stops18h 02m

Belfast City

Wed 3/25

9:15 am-11:08 pm

2 stops20h 53m

$736

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Wed 12/10

2:35 pm-5:55 pm

2 stops19h 20m

Belfast Intl

Wed 12/17

6:30 am-5:00 pm

2 stops18h 30m

$737

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

1:35 pm-2:15 pm

1 stop16h 40m

Belfast City

Tue 3/17

11:25 am-12:49 am

2 stops20h 24m

$787

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 3/27

7:50 pm-5:15 pm

1 stop14h 25m

Belfast City

Tue 3/31

4:25 pm-6:25 pm

1 stop34h 00m

$972

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

Direct flights	None

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 many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Northern Ireland?
As of October 2025, there is 1 operator available to choose from for flights from Seattle/Tacoma Intl Airport to Northern Ireland.
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 $737	Free Cancellation	Rating 6.7 7,476 reviews		Search British Airways flights

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.

An easier way to manage your Northern Ireland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Northern Ireland

Popular cities in Northern Ireland

Flights to Londonfrom $313

Flights to Manchesterfrom $351

Flights to Edinburghfrom $396

Flights to Glasgowfrom $403

Flights to Birminghamfrom $406

Flights to Newcastle upon Tynefrom $481

Flights to Belfastfrom $543

Flights to Bristolfrom $431

Flights to Invernessfrom $422

Flights to Liverpoolfrom $455

Flights to Aberdeenfrom $507

Flights to Leedsfrom $512

Cheap flights from Seattle to Northern Ireland from $657

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Northern Ireland departing on 12/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Seattle to Northern Ireland

Cheap round-trip flights

Cheap last minute flights

British Airways flights from Seattle to Northern Ireland

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

Virgin Atlantic flights from Seattle to Northern Ireland

Our best Virgin Atlantic deals on Seattle to Northern Ireland flight tickets

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

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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?

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

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

Direct flights

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

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Northern Ireland?

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

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

Best airlines flying from Seattle to Northern Ireland

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

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Northern Ireland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Northern Ireland

Popular cities in Northern Ireland

Popular flights according to clicks in the last 7 days on momondo