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

Prices for flights from Washington to Belfast are refreshed on a daily basis.

How many operators does momondo search for flights from Washington to Belfast?

The number of operators available for flights from Washington to Belfast is 1 as of March 2026.

How old do you have to be to fly from Washington to Belfast?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Belfast.

What documentation or ID do you need to fly to Belfast?

The necessary travel and health documents for your Belfast 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.

$272 Cheap Flights from Washington to Belfast in 2026

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Find the cheapest flights from Washington to Belfast

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 pm - 9:30 pm

SEA

BFS

18h 30m

3 stops

8:15 pm - 9:40 am

BFS

SEA

45h 25m

3 stops

$774Multiple Airlines

Thu, May 7 - Sat, May 16

7:00 pm - 6:55 pm

SEA

BFS

15h 55m

2 stops

8:15 pm - 9:40 am

BFS

SEA

45h 25m

3 stops

$836Multiple Airlines

Thu, May 7 - Sat, May 16

8:20 pm - 8:35 pm

SEA

BHD

16h 15m

1 stop

7:40 pm - 11:35 am

BHD

SEA

23h 55m

1 stop

$840British Airways

Wed, Sep 2 - Wed, Sep 9

8:20 pm - 5:30 pm

SEA

BHD

13h 10m

1 stop

7:35 pm - 11:35 am

BHD

SEA

24h 00m

1 stop

$868British Airways

Mon, Sep 14 - Mon, Sep 21

6:24 am - 12:55 pm

SEA

BHD

22h 31m

2 stops

7:35 pm - 11:35 am

BHD

SEA

24h 00m

1 stop

$875British Airways

Mon, Sep 14 - Mon, Sep 21

8:20 pm - 8:35 pm

SEA

BHD

16h 15m

1 stop

7:40 pm - 6:49 pm

BHD

SEA

31h 09m

2 stops

$882British Airways

Wed, Sep 2 - Wed, Sep 9

1:32 pm - 1:35 pm

SEA

BHD

16h 03m

2 stops

6:30 am - 5:29 pm

BHD

SEA

18h 59m

2 stops

$943American Airlines

Wed, Sep 2 - Wed, Sep 9

1:05 pm - 9:20 am

PDX

BHD

12h 15m

1 stop

5:30 pm - 11:10 am

BHD

PDX

25h 40m

1 stop

$955Virgin Atlantic

Wed, Sep 2 - Sun, Sep 13

1:05 pm - 9:20 am

PDX

BHD

12h 15m

1 stop

5:30 pm - 3:06 pm

BHD

PDX

29h 36m

2 stops

$964KLM

Wed, Sep 2 - Sun, Sep 13

7:30 pm - 7:20 pm

PDX

BHD

15h 50m

1 stop

9:35 am - 11:57 pm

BHD

PDX

22h 22m

2 stops

$975American Airlines

Sat, Apr 18 - Sat, Apr 25

American Airlines flights from State of Washington to Belfast

Our best American Airlines deals on State of Washington to Belfast flight tickets

American Airlines

Sep 2

SEA1:32 pmSeattle/Tacoma Intl

16h 03m

2 stops

BHD1:35 pmBelfast City

Sep 9

BHD6:30 amBelfast City

18h 59m

2 stops

SEA5:29 pmSeattle/Tacoma Intl

$943

American Airlines

Mar 30

PDX11:46 amPortland

19h 44m

2 stops

BHD3:30 pmBelfast City

Apr 30

BHD9:35 amBelfast City

21h 21m

2 stops

PDX10:56 pmPortland

$972

American Airlines

Apr 18

PDX7:30 pmPortland

15h 50m

1 stop

BHD7:20 pmBelfast City

Apr 25

BHD9:35 amBelfast City

22h 22m

2 stops

PDX11:57 pmPortland

$975

Virgin Atlantic flights from State of Washington to Belfast

Our best Virgin Atlantic deals on State of Washington to Belfast flight tickets

Virgin Atlantic

Sep 2

PDX1:05 pmPortland

12h 15m

1 stop

BHD9:20 amBelfast City

Sep 13

BHD5:30 pmBelfast City

25h 40m

1 stop

PDX11:10 amPortland

$955

Virgin Atlantic

Apr 3

SEA5:35 pmSeattle/Tacoma Intl

15h 20m

1 stop

BHD4:55 pmBelfast City

Apr 11

BHD5:30 pmBelfast City

31h 00m

1 stop

SEA4:30 pmSeattle/Tacoma Intl

$2,122

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Thu 5/7

7:00 pm-9:30 pm

3 stops18h 30m

Belfast Intl

Sat 5/16

8:15 pm-9:40 am

3 stops45h 25m

$774

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Thu 5/7

7:00 pm-6:55 pm

2 stops15h 55m

Belfast Intl

Sat 5/16

8:15 pm-9:40 am

3 stops45h 25m

$836

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 9/2

8:20 pm-8:35 pm

1 stop16h 15m

Belfast City

Wed 9/9

7:40 pm-11:35 am

1 stop23h 55m

$840

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 9/14

8:20 pm-5:30 pm

1 stop13h 10m

Belfast City

Mon 9/21

7:35 pm-11:35 am

1 stop24h 00m

$868

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 9/14

6:24 am-12:55 pm

2 stops22h 31m

Belfast City

Mon 9/21

7:35 pm-11:35 am

1 stop24h 00m

$875

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 9/2

8:20 pm-8:35 pm

1 stop16h 15m

Belfast City

Wed 9/9

7:40 pm-6:49 pm

2 stops31h 09m

$882

Quickest round-trip

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 9/2

1:32 pm-1:35 pm

2 stops16h 03m

Belfast City

Wed 9/9

6:30 am-5:29 pm

2 stops18h 59m

$943

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 9/2

1:05 pm-9:20 am

1 stop12h 15m

Belfast City

Sun 9/13

5:30 pm-11:10 am

1 stop25h 40m

$955

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 9/2

1:05 pm-9:20 am

1 stop12h 15m

Belfast City

Sun 9/13

5:30 pm-3:06 pm

2 stops29h 36m

$964

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 4/18

7:30 pm-7:20 pm

1 stop15h 50m

Belfast City

Sat 4/25

9:35 am-11:57 pm

2 stops22h 22m

$975

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 Belfast

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 Belfast?

British Airways, American Airlines, and Aer Lingus are the most popular carriers operating from Washington to Belfast

Cheap State of Washington to Belfast flight deals and tips

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

Fastest flight time	12h 15m
Direct flights	None

The fastest flight from State of Washington to Belfast takes 12h 15m

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

Search flight deals

When did momondo last update prices for flights from Washington to Belfast?
Prices for flights from Washington to Belfast are refreshed on a daily basis.
How many operators does momondo search for flights from Washington to Belfast?
The number of operators available for flights from Washington to Belfast is 1 as of March 2026.
How old do you have to be to fly from Washington to Belfast?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Belfast.
What documentation or ID do you need to fly to Belfast?
The necessary travel and health documents for your Belfast 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.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Belfast. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Washington to Belfast flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington to Belfast?

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 Belfast from Washington.

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

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

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Cheap flights from Washington to Belfast from $272

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Belfast departing on 4/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from State of Washington to Belfast

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Cheap State of Washington to Belfast flight deals and tips

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

Fastest flight time

Direct flights

Why use momondo?

An easier way to manage your Belfast 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 the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast

Popular cities in the United Kingdom

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

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