How do I get Price Alerts for flights from State of Washington to Northern Ireland?

Search flight deals from State of Washington to Northern Ireland . While viewing offers you’ll have the option to create a Price Alert.

How can I save money on flights from State of Washington to Northern Ireland with momondo?

Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

When did momondo last update prices for flights from Washington to Northern Ireland?

Prices for flights from Washington to Northern Ireland are updated daily.

How old do you have to be to fly from Washington 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 Washington to Northern Ireland.

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

The required travel and health documents for your Northern Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Northern Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$353 Cheap Flights from Washington to Northern Ireland in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Northern Ireland

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:35 pm - 7:00 pmSEA Seattle/Tacoma Intl-BHD Belfast City

20h 25m2 stops Reykjavik Keflavik Intl London Heathrow

2:20 pm - 5:00 pmBHD Belfast City-SEA Seattle/Tacoma Intl

34h 40m2 stops London Gatwick Reykjavik Keflavik Intl

$850Multiple Airlines

Wed, Jan 20 - Wed, Jan 27

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

14h 05m1 stop London Heathrow

4:55 pm - 4:50 pmBHD Belfast City-SEA Seattle/Tacoma Intl

31h 55m1 stop London Heathrow

$901British Airways

Sun, Mar 7 - Tue, Mar 9

8:20 pm - 5:40 pmSEA Seattle/Tacoma Intl-BHD Belfast City

13h 20m1 stop London Heathrow

6:30 am - 6:25 pmBHD Belfast City-SEA Seattle/Tacoma Intl

19h 55m1 stop London Heathrow

$905British Airways

Sun, Apr 25 - Wed, Apr 28

8:20 pm - 5:40 pmSEA Seattle/Tacoma Intl-BHD Belfast City

13h 20m1 stop London Heathrow

6:30 am - 6:25 pmBHD Belfast City-SEA Seattle/Tacoma Intl

19h 55m1 stop London Heathrow

$906British Airways

Sun, Apr 25 - Wed, Apr 28

6:45 pm - 7:05 pmSEA Seattle/Tacoma Intl-BHD Belfast City

16h 20m1 stop London Heathrow

9:15 am - 4:50 pmBHD Belfast City-SEA Seattle/Tacoma Intl

15h 35m1 stop London Heathrow

$958British Airways

Wed, Jan 20 - Wed, Jan 27

2:35 pm - 7:00 pmSEA Seattle/Tacoma Intl-BHD Belfast City

20h 25m2 stops Reykjavik Keflavik Intl London Heathrow

7:25 am - 4:50 pmBHD Belfast City-SEA Seattle/Tacoma Intl

17h 25m1 stop London Gatwick

$961Multiple Airlines

Wed, Jan 20 - Wed, Jan 27

6:45 pm - 5:25 pmSEA Seattle/Tacoma Intl-BHD Belfast City

14h 40m1 stop London Heathrow

11:45 am - 4:50 pmBHD Belfast City-SEA Seattle/Tacoma Intl

13h 05m1 stop London Heathrow

$1,059British Airways

Fri, Jan 1 - Sat, Jan 16

6:45 pm - 5:25 pmSEA Seattle/Tacoma Intl-BHD Belfast City

14h 40m1 stop London Heathrow

11:45 am - 4:50 pmBHD Belfast City-SEA Seattle/Tacoma Intl

13h 05m1 stop London Heathrow

$1,074Multiple Airlines

Fri, Jan 1 - Sat, Jan 16

6:45 pm - 7:10 pmSEA Seattle/Tacoma Intl-BHD Belfast City

16h 25m1 stop London Heathrow

6:35 am - 8:13 pmBHD Belfast City-SEA Seattle/Tacoma Intl

21h 38m2 stops London Heathrow Chicago O'Hare Intl

$1,089British Airways

Fri, Jan 1 - Sat, Jan 16

10:47 am - 2:05 pmSEA Seattle/Tacoma Intl-BHD Belfast City

19h 18m2 stops Chicago O'Hare Intl London Heathrow

6:35 am - 8:13 pmBHD Belfast City-SEA Seattle/Tacoma Intl

21h 38m2 stops London Heathrow Chicago O'Hare Intl

$1,101American Airlines

Fri, Jan 1 - Sat, Jan 16

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British Airways flights from State of Washington to Northern Ireland

Our best British Airways deals on State of Washington to Northern Ireland flight tickets

British Airways

Mar 7

SEA6:45 pmSeattle/Tacoma Intl

14h 05m

1 stop

BHD4:50 pmBelfast City

Mar 9

BHD4:55 pmBelfast City

31h 55m

1 stop

SEA4:50 pmSeattle/Tacoma Intl

$901

British Airways

Apr 25

SEA8:20 pmSeattle/Tacoma Intl

13h 20m

1 stop

BHD5:40 pmBelfast City

Apr 28

BHD6:30 amBelfast City

19h 55m

1 stop

SEA6:25 pmSeattle/Tacoma Intl

$905

British Airways

Apr 25

SEA8:20 pmSeattle/Tacoma Intl

13h 20m

1 stop

BHD5:40 pmBelfast City

Apr 28

BHD6:30 amBelfast City

19h 55m

1 stop

SEA6:25 pmSeattle/Tacoma Intl

$906

momondo Fare Finder

Use the filters below to find and compare flights from Washington 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

Wed 1/20

2:35 pm-7:00 pm

2 stops20h 25m

Belfast City

Wed 1/27

2:20 pm-5:00 pm

2 stops34h 40m

$850

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 3/7

6:45 pm-4:50 pm

1 stop14h 05m

Belfast City

Tue 3/9

4:55 pm-4:50 pm

1 stop31h 55m

$901

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 4/25

8:20 pm-5:40 pm

1 stop13h 20m

Belfast City

Wed 4/28

6:30 am-6:25 pm

1 stop19h 55m

$905

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 4/25

8:20 pm-5:40 pm

1 stop13h 20m

Belfast City

Wed 4/28

6:30 am-6:25 pm

1 stop19h 55m

$906

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Wed 1/20

6:45 pm-7:05 pm

1 stop16h 20m

Belfast City

Wed 1/27

9:15 am-4:50 pm

1 stop15h 35m

$958

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Wed 1/20

2:35 pm-7:00 pm

2 stops20h 25m

Belfast City

Wed 1/27

7:25 am-4:50 pm

1 stop17h 25m

$961

Quickest round-trip

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Fri 1/1

6:45 pm-5:25 pm

1 stop14h 40m

Belfast City

Sat 1/16

11:45 am-4:50 pm

1 stop13h 05m

$1,059

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Fri 1/1

6:45 pm-5:25 pm

1 stop14h 40m

Belfast City

Sat 1/16

11:45 am-4:50 pm

1 stop13h 05m

$1,074

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Fri 1/1

6:45 pm-7:10 pm

1 stop16h 25m

Belfast City

Sat 1/16

6:35 am-8:13 pm

2 stops21h 38m

$1,089

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Fri 1/1

10:47 am-2:05 pm

2 stops19h 18m

Belfast City

Sat 1/16

6:35 am-8:13 pm

2 stops21h 38m

$1,101

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Cheap State of Washington to Northern Ireland flight deals and tips

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

Best Price Found	$353
Fastest flight time	13h 20m
Direct flights	None

The best one-way flight to Northern Ireland from State of Washington in the past 72 hours is $353. The best round-trip flight deal from State of Washington to Northern Ireland found on momondo in the last 72 hours is $850.

The fastest flight from State of Washington to Northern Ireland takes 13h 20m

There are no direct flights from State of Washington to Northern Ireland. There are no popular flight routes from State of Washington to Northern Ireland.

Search flight deals

Frequently asked questions about flying from Washington to Northern Ireland

When did momondo last update prices for flights from Washington to Northern Ireland?
Prices for flights from Washington to Northern Ireland are updated daily.
How old do you have to be to fly from Washington 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 Washington to Northern Ireland.
What documentation or ID do you need to fly to Northern Ireland?
The required travel and health documents for your Northern Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Northern Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from State of Washington to Northern Ireland

Compare and see reviews for airlines that fly from State of Washington to Northern Ireland with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $804	Free Cancellation	Rating 6.7 8,286 reviews		Search British Airways flights

Frequently asked questions about flying from Washington to Northern Ireland

How do I get Price Alerts for flights from State of Washington to Northern Ireland?
Search flight deals from State of Washington to Northern Ireland. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from State of Washington to Northern Ireland with momondo?
Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington to Northern Ireland. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Northern Ireland from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Northern Ireland from Washington.

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

Price alerts on flights to Northern Ireland from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.