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 February 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.

$445 Cheap Flights from Washington to Northern Ireland in 2026

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Find the cheapest flights from Washington to Northern Ireland

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:30 pm - 7:50 pm

PDX

BHD

16h 20m

1 stop

10:05 am - 5:40 pm

BHD

PDX

15h 35m

1 stop

$687British Airways

Wed, Apr 8 - Wed, Apr 15

7:30 pm - 6:45 pm

PDX

BHD

15h 15m

1 stop

10:05 am - 10:42 pm

BHD

PDX

20h 37m

2 stops

$730British Airways

Wed, Apr 8 - Wed, Apr 15

8:20 pm - 8:45 am

SEA

BHD

28h 25m

1 stop

7:35 pm - 11:35 am

BHD

SEA

24h 00m

1 stop

$745British Airways

Wed, May 13 - Mon, May 25

1:35 pm - 3:30 pm

SEA

BHD

17h 55m

1 stop

12:45 pm - 6:25 pm

BHD

SEA

13h 40m

1 stop

$796British Airways

Fri, May 8 - Thu, May 14

7:50 pm - 6:35 pm

SEA

BHD

15h 45m

1 stop

7:25 pm - 12:30 pm

BHD

SEA

24h 05m

1 stop

$808British Airways

Mon, Mar 9 - Mon, Mar 16

1:23 pm - 3:40 pm

PDX

BHD

18h 17m

2 stops

10:05 am - 10:42 pm

BHD

PDX

20h 37m

2 stops

$808British Airways

Wed, Apr 8 - Wed, Apr 15

8:20 pm - 6:45 pm

SEA

BHD

14h 25m

1 stop

4:25 pm - 11:35 am

BHD

SEA

27h 10m

1 stop

$810British Airways

Mon, Jun 8 - Tue, Jun 16

8:20 pm - 6:45 pm

SEA

BHD

14h 25m

1 stop

7:35 pm - 11:39 pm

BHD

SEA

36h 04m

2 stops

$816British Airways

Wed, May 13 - Mon, May 25

1:35 pm - 3:30 pm

SEA

BHD

17h 55m

1 stop

9:35 am - 10:38 pm

BHD

SEA

21h 03m

2 stops

$820Multiple Airlines

Fri, May 8 - Thu, May 14

3:05 pm - 4:50 pm

SEA

BHD

17h 45m

1 stop

5:20 pm - 12:35 pm

BHD

SEA

26h 15m

1 stop

$848Multiple Airlines

Sat, Mar 7 - Tue, Mar 17

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

Apr 8

PDX7:30 pmPortland

16h 20m

1 stop

BHD7:50 pmBelfast City

Apr 15

BHD10:05 amBelfast City

15h 35m

1 stop

PDX5:40 pmPortland

$687

British Airways

Apr 8

PDX7:30 pmPortland

15h 15m

1 stop

BHD6:45 pmBelfast City

Apr 15

BHD10:05 amBelfast City

20h 37m

2 stops

PDX10:42 pmPortland

$730

British Airways

May 8

SEA1:35 pmSeattle/Tacoma Intl

17h 55m

1 stop

BHD3:30 pmBelfast City

May 14

BHD12:45 pmBelfast City

13h 40m

1 stop

SEA6:25 pmSeattle/Tacoma Intl

$796

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

Mar 8

SEA9:05 pmSeattle/Tacoma Intl

16h 45m

2 stops

BHD8:50 pmBelfast City

Mar 17

BHD10:10 amBelfast City

40h 10m

2 stops

SEA7:20 pmSeattle/Tacoma Intl

$868

Aer Lingus

Mar 9

SEA9:05 pmSeattle/Tacoma Intl

32h 45m

2 stops

BHD12:50 pmBelfast City

Mar 17

BHD6:50 pmBelfast City

31h 30m

2 stops

SEA7:20 pmSeattle/Tacoma Intl

$874

Aer Lingus

Mar 9

SEA9:05 pmSeattle/Tacoma Intl

29h 10m

2 stops

BHD9:15 amBelfast City

Mar 16

BHD6:55 amBelfast City

19h 25m

2 stops

SEA7:20 pmSeattle/Tacoma Intl

$910

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

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 4/8

7:30 pm-7:50 pm

1 stop16h 20m

Belfast City

Wed 4/15

10:05 am-5:40 pm

1 stop15h 35m

$687

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 4/8

7:30 pm-6:45 pm

1 stop15h 15m

Belfast City

Wed 4/15

10:05 am-10:42 pm

2 stops20h 37m

$730

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 5/13

8:20 pm-8:45 am

1 stop28h 25m

Belfast City

Mon 5/25

7:35 pm-11:35 am

1 stop24h 00m

$745

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 5/8

1:35 pm-3:30 pm

1 stop17h 55m

Belfast City

Thu 5/14

12:45 pm-6:25 pm

1 stop13h 40m

$796

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 3/9

7:50 pm-6:35 pm

1 stop15h 45m

Belfast City

Mon 3/16

7:25 pm-12:30 pm

1 stop24h 05m

$808

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 4/8

1:23 pm-3:40 pm

2 stops18h 17m

Belfast City

Wed 4/15

10:05 am-10:42 pm

2 stops20h 37m

$808

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 6/8

8:20 pm-6:45 pm

1 stop14h 25m

Belfast City

Tue 6/16

4:25 pm-11:35 am

1 stop27h 10m

$810

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 5/13

8:20 pm-6:45 pm

1 stop14h 25m

Belfast City

Mon 5/25

7:35 pm-11:39 pm

2 stops36h 04m

$816

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 5/8

1:35 pm-3:30 pm

1 stop17h 55m

Belfast City

Thu 5/14

9:35 am-10:38 pm

2 stops21h 03m

$820

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

3:05 pm-4:50 pm

1 stop17h 45m

Belfast City

Tue 3/17

5:20 pm-12:35 pm

1 stop26h 15m

$848

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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 is the most popular carrier 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	12h 30m
Direct flights	None

The fastest flight from State of Washington to Northern Ireland takes 12h 30m

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

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 February 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.

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.