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 is 1 operator available for flights from Belfast to Washington as of March 2026.

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.

£352 Cheap Flights from Belfast to Washington in 2026

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Find the cheapest flights from Belfast to Washington

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

10:05 - 18:25

BHD

SEA

16h 20m

1 stop

13:19 - 17:40

SEA

BHD

20h 21m

2 stops

£688British Airways

Wed, 22 Apr - Sun, 26 Apr

10:05 - 18:25

BHD

SEA

16h 20m

1 stop

11:16 - 14:35

SEA

BHD

19h 19m

2 stops

£689British Airways

Wed, 22 Apr - Sun, 26 Apr

10:05 - 22:38

BHD

SEA

20h 33m

2 stops

07:00 - 14:35

SEA

BHD

23h 35m

2 stops

£690British Airways

Wed, 22 Apr - Sun, 26 Apr

10:05 - 22:38

BHD

SEA

20h 33m

2 stops

13:30 - 13:25

SEA

BHD

15h 55m

1 stop

£690British Airways

Wed, 22 Apr - Sun, 26 Apr

10:05 - 00:36

BHD

SEA

22h 31m

2 stops

13:19 - 14:35

SEA

BHD

17h 16m

2 stops

£692British Airways

Wed, 22 Apr - Sun, 26 Apr

10:05 - 00:36

BHD

SEA

22h 31m

2 stops

13:19 - 17:40

SEA

BHD

20h 21m

2 stops

£693British Airways

Wed, 22 Apr - Sun, 26 Apr

10:05 - 22:38

BHD

SEA

20h 33m

2 stops

11:16 - 14:35

SEA

BHD

19h 19m

2 stops

£694British Airways

Wed, 22 Apr - Sun, 26 Apr

10:05 - 18:25

BHD

SEA

16h 20m

1 stop

13:30 - 13:25

SEA

BHD

15h 55m

1 stop

£712British Airways

Wed, 22 Apr - Sun, 26 Apr

British Airways flights from Belfast to State of Washington

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

British Airways

22 Apr

BHD10:05Belfast City

16h 20m

1 stop

SEA18:25Seattle/Tacoma Intl

26 Apr

SEA13:19Seattle/Tacoma Intl

20h 21m

2 stops

BHD17:40Belfast City

£688

British Airways

22 Apr

BHD10:05Belfast City

16h 20m

1 stop

SEA18:25Seattle/Tacoma Intl

26 Apr

SEA11:16Seattle/Tacoma Intl

19h 19m

2 stops

BHD14:35Belfast City

£689

British Airways

22 Apr

BHD10:05Belfast City

20h 33m

2 stops

SEA22:38Seattle/Tacoma Intl

26 Apr

SEA07:00Seattle/Tacoma Intl

23h 35m

2 stops

BHD14:35Belfast City

£690

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 22/4

10:05-18:25

1 stop16h 20m

Seattle/Tacoma Intl

Sun 26/4

13:19-17:40

2 stops20h 21m

£688

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 22/4

10:05-18:25

1 stop16h 20m

Seattle/Tacoma Intl

Sun 26/4

11:16-14:35

2 stops19h 19m

£689

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 22/4

10:05-22:38

2 stops20h 33m

Seattle/Tacoma Intl

Sun 26/4

07:00-14:35

2 stops23h 35m

£690

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 22/4

10:05-22:38

2 stops20h 33m

Seattle/Tacoma Intl

Sun 26/4

13:30-13:25

1 stop15h 55m

£690

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 22/4

10:05-00:36

2 stops22h 31m

Seattle/Tacoma Intl

Sun 26/4

13:19-14:35

2 stops17h 16m

£692

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 22/4

10:05-00:36

2 stops22h 31m

Seattle/Tacoma Intl

Sun 26/4

13:19-17:40

2 stops20h 21m

£693

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 22/4

10:05-22:38

2 stops20h 33m

Seattle/Tacoma Intl

Sun 26/4

11:16-14:35

2 stops19h 19m

£694

Fastest return journey

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 22/4

10:05-18:25

1 stop16h 20m

Seattle/Tacoma Intl

Sun 26/4

13:30-13:25

1 stop15h 55m

£712

Cheapest one-way

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 3/5

17:55-16:00

3 stops54h 05m

£352

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Mon 22/6

06:10-17:10

3 stops43h 00m

£383

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

How to get the cheapest flight ticket from Belfast to State of Washington

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 Belfast to Washington?

British Airways is the most popular carrier operating from Belfast to Washington

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

Fastest flight time	13h 05m
Direct flights	None

The fastest flight from Belfast to State of Washington takes 13h 05m

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 is 1 operator available for flights from Belfast to Washington as of March 2026.
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
American Airlines	PriceFrom £562	Free Cancellation	Rating 7.1 11,446 reviews		Search American Airlines flights

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.