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 October 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.

£598 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

Enter your travel dates to find the best prices.

07:20 - 17:00BHD-SEA

17h 40m2 stops

14:35 - 20:30SEA-BHD

21h 55m2 stops

£621Multiple Airlines

Find Deal

Mon, 24 Nov - Mon, 1 Dec

06:30 - 11:45BHD-SEA

13h 15m1 stop

15:05 - 21:00SEA-BHD

21h 55m1 stop

£622Delta

Find Deal

Mon, 24 Nov - Mon, 1 Dec

06:30 - 18:41BHD-SEA

20h 11m2 stops

15:05 - 16:50SEA-BHD

17h 45m1 stop

£627Virgin Atlantic

Find Deal

Mon, 24 Nov - Mon, 1 Dec

15:05 - 11:30BHD-SEA

28h 25m1 stop

07:00 - 14:15SEA-BHD

24h 15m2 stops

£654American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

15:05 - 11:30BHD-SEA

28h 25m1 stop

07:00 - 14:15SEA-BHD

24h 15m2 stops

£655American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

09:05 - 16:55BHD-SEA

15h 50m1 stop

19:50 - 18:35SEA-BHD

15h 45m1 stop

£658British Airways

Find Deal

Thu, 5 Mar - Mon, 9 Mar

06:35 - 23:32BHD-SEA

24h 57m2 stops

07:00 - 14:15SEA-BHD

24h 15m2 stops

£659American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

09:05 - 12:27BHD-SEA

35h 22m2 stops

07:00 - 14:15SEA-BHD

24h 15m2 stops

£660American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

07:50 - 14:20BFS-SEA

38h 30m2 stops

22:15 - 08:20SEA-BFS

26h 05m1 stop

£752Multiple Airlines

Find Deal

Mon, 24 Nov - Mon, 1 Dec

17:20 - 17:00BHD-SEA

31h 40m3 stops

14:35 - 20:50SEA-BHD

22h 15m2 stops

£879Multiple Airlines

Find Deal

Mon, 24 Nov - Mon, 1 Dec

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

BHD15:05Belfast City

28h 25m

1 stop

SEA11:30Seattle/Tacoma Intl

9 Mar

SEA07:00Seattle/Tacoma Intl

24h 15m

2 stops

BHD14:15Belfast City

£654

Find similar

American Airlines

5 Mar

BHD15:05Belfast City

28h 25m

1 stop

SEA11:30Seattle/Tacoma Intl

9 Mar

SEA07:00Seattle/Tacoma Intl

24h 15m

2 stops

BHD14:15Belfast City

£655

Find similar

American Airlines

5 Mar

BHD06:35Belfast City

24h 57m

2 stops

SEA23:32Seattle/Tacoma Intl

9 Mar

SEA07:00Seattle/Tacoma Intl

24h 15m

2 stops

BHD14:15Belfast City

£659

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 24/11

07:20-17:00

2 stops17h 40m

Seattle/Tacoma Intl

Mon 1/12

14:35-20:30

2 stops21h 55m

£621

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 24/11

06:30-11:45

1 stop13h 15m

Seattle/Tacoma Intl

Mon 1/12

15:05-21:00

1 stop21h 55m

£622

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 24/11

06:30-18:41

2 stops20h 11m

Seattle/Tacoma Intl

Mon 1/12

15:05-16:50

1 stop17h 45m

£627

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

15:05-11:30

1 stop28h 25m

Seattle/Tacoma Intl

Mon 9/3

07:00-14:15

2 stops24h 15m

£654

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

15:05-11:30

1 stop28h 25m

Seattle/Tacoma Intl

Mon 9/3

07:00-14:15

2 stops24h 15m

£655

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

09:05-16:55

1 stop15h 50m

Seattle/Tacoma Intl

Mon 9/3

19:50-18:35

1 stop15h 45m

£658

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

06:35-23:32

2 stops24h 57m

Seattle/Tacoma Intl

Mon 9/3

07:00-14:15

2 stops24h 15m

£659

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

09:05-12:27

2 stops35h 22m

Seattle/Tacoma Intl

Mon 9/3

07:00-14:15

2 stops24h 15m

£660

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Mon 24/11

07:50-14:20

2 stops38h 30m

Seattle/Tacoma Intl

Mon 1/12

22:15-08:20

1 stop26h 05m

£752

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 24/11

17:20-17:00

3 stops31h 40m

Seattle/Tacoma Intl

Mon 1/12

14:35-20:50

2 stops22h 15m

£879

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 October 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 £442	Free Cancellation	Rating 6.7 7,483 reviews		Search British Airways flights
American Airlines	PriceFrom £564	Free Cancellation	Rating 7.2 11,032 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.