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

Prices for flights from Washington to Belfast refresh daily.

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 travel and health documents required for your trip to Belfast can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Belfast. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£203 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 return flights

Enter your travel dates to find the best prices.

19:00 - 21:30

SEA

BFS

18h 30m

3 stops

20:15 - 09:40

BFS

SEA

45h 25m

3 stops

£578Multiple Airlines

Thu, 7 May - Sat, 16 May

19:00 - 18:55

SEA

BFS

15h 55m

2 stops

20:15 - 09:40

BFS

SEA

45h 25m

3 stops

£624Multiple Airlines

Thu, 7 May - Sat, 16 May

20:20 - 20:35

SEA

BHD

16h 15m

1 stop

19:40 - 11:35

BHD

SEA

23h 55m

1 stop

£627British Airways

Wed, 2 Sep - Wed, 9 Sep

20:20 - 17:30

SEA

BHD

13h 10m

1 stop

19:35 - 11:35

BHD

SEA

24h 00m

1 stop

£648British Airways

Mon, 14 Sep - Mon, 21 Sep

06:24 - 12:55

SEA

BHD

22h 31m

2 stops

19:35 - 11:35

BHD

SEA

24h 00m

1 stop

£653British Airways

Mon, 14 Sep - Mon, 21 Sep

20:20 - 20:35

SEA

BHD

16h 15m

1 stop

19:40 - 18:49

BHD

SEA

31h 09m

2 stops

£658British Airways

Wed, 2 Sep - Wed, 9 Sep

13:32 - 13:35

SEA

BHD

16h 03m

2 stops

06:30 - 17:29

BHD

SEA

18h 59m

2 stops

£704American Airlines

Wed, 2 Sep - Wed, 9 Sep

13:05 - 09:20

PDX

BHD

12h 15m

1 stop

17:30 - 11:10

BHD

PDX

25h 40m

1 stop

£713Virgin Atlantic

Wed, 2 Sep - Sun, 13 Sep

13:05 - 09:20

PDX

BHD

12h 15m

1 stop

17:30 - 15:06

BHD

PDX

29h 36m

2 stops

£719KLM

Wed, 2 Sep - Sun, 13 Sep

19:30 - 19:20

PDX

BHD

15h 50m

1 stop

09:35 - 23:57

BHD

PDX

22h 22m

2 stops

£728American Airlines

Sat, 18 Apr - Sat, 25 Apr

American Airlines flights from State of Washington to Belfast

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

American Airlines

2 Sept

SEA13:32Seattle/Tacoma Intl

16h 03m

2 stops

BHD13:35Belfast City

9 Sept

BHD06:30Belfast City

18h 59m

2 stops

SEA17:29Seattle/Tacoma Intl

£704

American Airlines

30 Mar

PDX11:46Portland

19h 44m

2 stops

BHD15:30Belfast City

30 Apr

BHD09:35Belfast City

21h 21m

2 stops

PDX22:56Portland

£725

American Airlines

18 Apr

PDX19:30Portland

15h 50m

1 stop

BHD19:20Belfast City

25 Apr

BHD09:35Belfast City

22h 22m

2 stops

PDX23:57Portland

£728

British Airways flights from State of Washington to Belfast

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

British Airways

2 Sept

SEA20:20Seattle/Tacoma Intl

16h 15m

1 stop

BHD20:35Belfast City

9 Sept

BHD19:40Belfast City

23h 55m

1 stop

SEA11:35Seattle/Tacoma Intl

£627

British Airways

14 Sept

SEA20:20Seattle/Tacoma Intl

13h 10m

1 stop

BHD17:30Belfast City

21 Sept

BHD19:35Belfast City

24h 00m

1 stop

SEA11:35Seattle/Tacoma Intl

£648

British Airways

14 Sept

SEA06:24Seattle/Tacoma Intl

22h 31m

2 stops

BHD12:55Belfast City

21 Sept

BHD19:35Belfast City

24h 00m

1 stop

SEA11:35Seattle/Tacoma Intl

£653

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Thu 7/5

19:00-21:30

3 stops18h 30m

Belfast Intl

Sat 16/5

20:15-09:40

3 stops45h 25m

£578

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Thu 7/5

19:00-18:55

2 stops15h 55m

Belfast Intl

Sat 16/5

20:15-09:40

3 stops45h 25m

£624

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 2/9

20:20-20:35

1 stop16h 15m

Belfast City

Wed 9/9

19:40-11:35

1 stop23h 55m

£627

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 14/9

20:20-17:30

1 stop13h 10m

Belfast City

Mon 21/9

19:35-11:35

1 stop24h 00m

£648

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 14/9

06:24-12:55

2 stops22h 31m

Belfast City

Mon 21/9

19:35-11:35

1 stop24h 00m

£653

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 2/9

20:20-20:35

1 stop16h 15m

Belfast City

Wed 9/9

19:40-18:49

2 stops31h 09m

£658

Fastest return journey

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 2/9

13:32-13:35

2 stops16h 03m

Belfast City

Wed 9/9

06:30-17:29

2 stops18h 59m

£704

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 2/9

13:05-09:20

1 stop12h 15m

Belfast City

Sun 13/9

17:30-11:10

1 stop25h 40m

£713

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 2/9

13:05-09:20

1 stop12h 15m

Belfast City

Sun 13/9

17:30-15:06

2 stops29h 36m

£719

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 18/4

19:30-19:20

1 stop15h 50m

Belfast City

Sat 25/4

09:35-23:57

2 stops22h 22m

£728

Flights are sorted by cheapest return 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 and American Airlines 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 refresh daily.
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 travel and health documents required for your trip to Belfast can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Belfast. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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. All flights to Belfast 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 Belfast?

momondo provides multiple filters to help you find the best flight to Belfast from Washington. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Belfast from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from Washington to Belfast from £203

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 16/4. 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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Our best British Airways deals on State of Washington to Belfast flight tickets

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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, organise 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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