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

Confirm your travel details to search for the latest offers for flights from Belfast to State of Washington . While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

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

By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

How does momondo find its flight prices?

momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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

Prices for flights from Belfast to Washington were last updated today.

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

There are 2 operators available for flights from Belfast to Washington as of September 2025.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast to Washington.

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

The necessary travel and health documents for your Washington 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.

£530 Cheap Flights from Belfast to Washington in 2025/26

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Find the cheapest flights from Belfast to Washington

Round-trip

Cheap return flights

06:45 - 17:00BHD-SEA

18h 15m2 stops

14:35 - 16:45SEA-BHD

18h 10m2 stops

£530Multiple Airlines

Find Deal

Fri, 13 Feb - Tue, 17 Feb

11:30 - 16:55BHD-SEA

13h 25m1 stop

18:50 - 18:40SEA-BHD

15h 50m1 stop

£543British Airways

Find Deal

Fri, 13 Feb - Tue, 17 Feb

11:30 - 23:07BHD-SEA

19h 37m2 stops

13:25 - 11:30SEA-BHD

14h 05m1 stop

£547British Airways

Find Deal

Fri, 13 Feb - Tue, 17 Feb

06:35 - 16:55BHD-SEA

18h 20m1 stop

13:48 - 18:35SEA-BHD

21h 47m2 stops

£552American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

10:40 - 16:55BHD-SEA

14h 15m1 stop

13:48 - 18:35SEA-BHD

21h 47m2 stops

£555American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

10:40 - 23:07BHD-SEA

20h 27m2 stops

23:59 - 14:50SEA-BHD

31h 51m2 stops

£557American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

06:35 - 23:07BHD-SEA

24h 32m2 stops

13:48 - 14:15SEA-BHD

17h 27m2 stops

£558American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

American Airlines flights from Belfast to State of Washington

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

American Airlines

5 Mar

BHD06:35Belfast City

18h 20m

1 stop

SEA16:55Seattle/Tacoma Intl

9 Mar

SEA13:48Seattle/Tacoma Intl

21h 47m

2 stops

BHD18:35Belfast City

£552

Find similar

American Airlines

5 Mar

BHD10:40Belfast City

14h 15m

1 stop

SEA16:55Seattle/Tacoma Intl

9 Mar

SEA13:48Seattle/Tacoma Intl

21h 47m

2 stops

BHD18:35Belfast City

£555

Find similar

American Airlines

5 Mar

BHD10:40Belfast City

20h 27m

2 stops

SEA23:07Seattle/Tacoma Intl

9 Mar

SEA23:59Seattle/Tacoma Intl

31h 51m

2 stops

BHD14:50Belfast City

£557

Find similar

British Airways flights from Belfast to State of Washington

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

British Airways

13 Feb

BHD11:30Belfast City

13h 25m

1 stop

SEA16:55Seattle/Tacoma Intl

17 Feb

SEA18:50Seattle/Tacoma Intl

15h 50m

1 stop

BHD18:40Belfast City

£543

Find similar

British Airways

13 Feb

BHD11:30Belfast City

19h 37m

2 stops

SEA23:07Seattle/Tacoma Intl

17 Feb

SEA13:25Seattle/Tacoma Intl

14h 05m

1 stop

BHD11:30Belfast City

£547

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 13/2

06:45-17:00

2 stops18h 15m

Seattle/Tacoma Intl

Tue 17/2

14:35-16:45

2 stops18h 10m

£530

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 13/2

11:30-16:55

1 stop13h 25m

Seattle/Tacoma Intl

Tue 17/2

18:50-18:40

1 stop15h 50m

£543

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 13/2

11:30-23:07

2 stops19h 37m

Seattle/Tacoma Intl

Tue 17/2

13:25-11:30

1 stop14h 05m

£547

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

06:35-16:55

1 stop18h 20m

Seattle/Tacoma Intl

Mon 9/3

13:48-18:35

2 stops21h 47m

£552

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

10:40-16:55

1 stop14h 15m

Seattle/Tacoma Intl

Mon 9/3

13:48-18:35

2 stops21h 47m

£555

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

10:40-23:07

2 stops20h 27m

Seattle/Tacoma Intl

Mon 9/3

23:59-14:50

2 stops31h 51m

£557

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

06:35-23:07

2 stops24h 32m

Seattle/Tacoma Intl

Mon 9/3

13:48-14:15

2 stops17h 27m

£558

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Cheap Belfast to State of Washington flight deals and tips

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

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Belfast to Washington?
Prices for flights from Belfast to Washington were last updated today.
How many operators does momondo search for flights from Belfast to Washington?
There are 2 operators available for flights from Belfast to Washington as of September 2025.
How old do you have to be to fly from Belfast to Washington?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast to Washington.
What documentation or ID do you need to fly to Washington?
The necessary travel and health documents for your Washington 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.

Best airlines flying from Belfast to State of Washington

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

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £431	Free Cancellation	Rating 6.7 7,367 reviews		Search British Airways flights
American Airlines	PriceFrom £550	Free Cancellation	Rating 7.2 10,000 reviews		Search American Airlines flights

How do I get Price Alerts for flights from Belfast to State of Washington?
Confirm your travel details to search for the latest offers for flights from Belfast to State of Washington. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.
How can I save money on flights from Belfast to State of Washington with momondo?
By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.
How does momondo find its flight prices?
momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

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

Finding the right flight to Washington from Belfast is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Washington from Belfast with this policy.

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

Once all potential Belfast to Washington flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Washington from Belfast. 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.