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 many operators does momondo search for flights from Washington to Northern Ireland?

The number of operators available for flights from Washington to Northern Ireland is 1 as of June 2026.

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.

$299 Cheap Flights from Washington to Northern Ireland in 2026

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.

7:00 am - 4:50 pm

PDX

BHD

25h 50m

2 stops

9:40 am - 11:47 pm

BHD

PDX

22h 07m

2 stops

$330Virgin Atlantic

Sat, Nov 7 - Wed, Nov 11

8:20 pm - 5:30 pm

SEA

BHD

13h 10m

1 stop

6:30 am - 6:25 pm

BHD

SEA

19h 55m

1 stop

$943British Airways

Mon, Aug 10 - Thu, Aug 20

1:28 pm - 10:20 am

PDX

BHD

36h 52m

2 stops

9:15 am - 3:50 pm

BHD

PDX

14h 35m

1 stop

$946British Airways

Sat, Nov 7 - Wed, Nov 11

1:28 pm - 10:20 am

PDX

BHD

36h 52m

2 stops

9:15 am - 3:50 pm

BHD

PDX

14h 35m

1 stop

$948British Airways

Sat, Nov 7 - Wed, Nov 11

8:20 pm - 8:35 pm

SEA

BHD

16h 15m

1 stop

9:35 am - 11:35 pm

BHD

SEA

22h 00m

2 stops

$975Multiple Airlines

Mon, Aug 10 - Thu, Aug 20

3:40 pm - 11:20 pm

SEA

BFS

23h 40m

3 stops

7:10 am - 5:10 pm

BFS

SEA

18h 00m

2 stops

$976Multiple Airlines

Fri, Aug 21 - Sun, Aug 30

12:50 pm - 3:30 pm

PDX

BHD

18h 40m

2 stops

6:30 am - 6:00 pm

BHD

PDX

19h 30m

2 stops

$977American Airlines

Mon, Aug 10 - Wed, Aug 19

1:05 pm - 9:20 am

PDX

BHD

12h 15m

1 stop

9:50 am - 8:17 pm

BHD

PDX

18h 27m

2 stops

$1,038Delta

Sun, Aug 9 - Wed, Aug 19

5:40 pm - 9:20 am

SEA

BHD

31h 40m

1 stop

5:30 pm - 11:37 am

BHD

SEA

26h 07m

1 stop

$1,184KLM

Sat, Jul 25 - Sat, Aug 1

5:40 pm - 9:20 am

SEA

BHD

31h 40m

1 stop

9:50 am - 4:20 pm

BHD

SEA

14h 30m

1 stop

$1,224KLM

Wed, Jul 8 - Wed, Jul 22

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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

Aug 10

SEA8:20 pmSeattle/Tacoma Intl

13h 10m

1 stop

BHD5:30 pmBelfast City

Aug 20

BHD6:30 amBelfast City

19h 55m

1 stop

SEA6:25 pmSeattle/Tacoma Intl

$943

British Airways

Nov 7

PDX1:28 pmPortland

36h 52m

2 stops

BHD10:20 amBelfast City

Nov 11

BHD9:15 amBelfast City

14h 35m

1 stop

PDX3:50 pmPortland

$946

British Airways

Nov 7

PDX1:28 pmPortland

36h 52m

2 stops

BHD10:20 amBelfast City

Nov 11

BHD9:15 amBelfast City

14h 35m

1 stop

PDX3:50 pmPortland

$948

Aer Lingus flights from State of Washington to Northern Ireland

Our best Aer Lingus deals on State of Washington to Northern Ireland flight tickets

Aer Lingus

Jul 8

SEA7:10 pmSeattle/Tacoma Intl

16h 55m

2 stops

BHD8:05 pmBelfast City

Jul 22

BHD6:50 amBelfast City

18h 20m

2 stops

SEA5:10 pmSeattle/Tacoma Intl

$1,227

Aer Lingus

Aug 2

SEA7:10 pmSeattle/Tacoma Intl

30h 40m

2 stops

BHD9:50 amBelfast City

Aug 6

BHD9:50 amBelfast City

15h 20m

2 stops

SEA5:10 pmSeattle/Tacoma Intl

$1,239

Aer Lingus

Jul 12

SEA7:10 pmSeattle/Tacoma Intl

16h 55m

2 stops

BHD8:05 pmBelfast City

Jul 15

BHD6:50 amBelfast City

18h 20m

2 stops

SEA5:10 pmSeattle/Tacoma Intl

$1,253

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

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 11/7

7:00 am-4:50 pm

2 stops25h 50m

Belfast City

Wed 11/11

9:40 am-11:47 pm

2 stops22h 07m

$330

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 8/10

8:20 pm-5:30 pm

1 stop13h 10m

Belfast City

Thu 8/20

6:30 am-6:25 pm

1 stop19h 55m

$943

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 11/7

1:28 pm-10:20 am

2 stops36h 52m

Belfast City

Wed 11/11

9:15 am-3:50 pm

1 stop14h 35m

$946

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 11/7

1:28 pm-10:20 am

2 stops36h 52m

Belfast City

Wed 11/11

9:15 am-3:50 pm

1 stop14h 35m

$948

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 8/10

8:20 pm-8:35 pm

1 stop16h 15m

Belfast City

Thu 8/20

9:35 am-11:35 pm

2 stops22h 00m

$975

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Fri 8/21

3:40 pm-11:20 pm

3 stops23h 40m

Belfast Intl

Sun 8/30

7:10 am-5:10 pm

2 stops18h 00m

$976

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Mon 8/10

12:50 pm-3:30 pm

2 stops18h 40m

Belfast City

Wed 8/19

6:30 am-6:00 pm

2 stops19h 30m

$977

Quickest round-trip

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sun 8/9

1:05 pm-9:20 am

1 stop12h 15m

Belfast City

Wed 8/19

9:50 am-8:17 pm

2 stops18h 27m

$1,038

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 7/25

5:40 pm-9:20 am

1 stop31h 40m

Belfast City

Sat 8/1

5:30 pm-11:37 am

1 stop26h 07m

$1,184

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 7/8

5:40 pm-9:20 am

1 stop31h 40m

Belfast City

Wed 7/22

9:50 am-4:20 pm

1 stop14h 30m

$1,224

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington 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 airline that flies from Washington to Northern Ireland?

British Airways, Aer Lingus, and Delta are the most popular carriers operating from Washington to Northern Ireland

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

Fastest flight time	16h 15m
Direct flights	None

The fastest flight from State of Washington to Northern Ireland takes 16h 15m

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 many operators does momondo search for flights from Washington to Northern Ireland?
The number of operators available for flights from Washington to Northern Ireland is 1 as of June 2026.
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 $807	Free Cancellation	Rating 6.7 8,070 reviews		Search British Airways flights

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.