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 February 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.

£678 Cheap Flights from Belfast to Washington in 2026

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Find the cheapest flights from Belfast to Washington

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:35 - 11:30

BHD

SEA

12h 55m

1 stop

07:21 - 14:15

SEA

BHD

23h 54m

2 stops

£679British Airways

Sat, 7 Mar - Mon, 9 Mar

06:35 - 11:30

BHD

SEA

12h 55m

1 stop

07:21 - 18:35

SEA

BHD

28h 14m

2 stops

£679British Airways

Sat, 7 Mar - Mon, 9 Mar

06:35 - 11:30

BHD

SEA

12h 55m

1 stop

19:50 - 18:35

SEA

BHD

15h 45m

1 stop

£680British Airways

Sat, 7 Mar - Mon, 9 Mar

06:35 - 23:04

BHD

SEA

24h 29m

2 stops

07:21 - 18:35

SEA

BHD

28h 14m

2 stops

£683British Airways

Sat, 7 Mar - Mon, 9 Mar

06:35 - 23:04

BHD

SEA

24h 29m

2 stops

13:37 - 14:15

SEA

BHD

17h 38m

2 stops

£684British Airways

Sat, 7 Mar - Mon, 9 Mar

08:05 - 19:20

BFS

SEA

18h 15m

2 stops

19:10 - 21:15

SEA

BFS

18h 05m

2 stops

£1,095Multiple Airlines

Fri, 27 Mar - Fri, 3 Apr

09:55 - 20:45

BFS

SEA

17h 50m

2 stops

05:40 - 19:50

SEA

BFS

30h 10m

3 stops

£1,114Multiple Airlines

Fri, 27 Mar - Fri, 3 Apr

19:50 - 17:15

BFS

SEA

28h 25m

2 stops

08:00 - 16:35

SEA

BFS

24h 35m

3 stops

£1,205Multiple Airlines

Sat, 28 Mar - Sat, 4 Apr

19:50 - 17:15

BFS

SEA

28h 25m

2 stops

14:10 - 20:40

SEA

BFS

22h 30m

2 stops

£1,250Multiple Airlines

Sat, 28 Mar - Sat, 4 Apr

09:25 - 21:53

BFS

SEA

43h 28m

3 stops

08:00 - 16:35

SEA

BFS

24h 35m

3 stops

£1,456Multiple Airlines

Sat, 28 Mar - Sat, 4 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

7 Mar

BHD06:35Belfast City

12h 55m

1 stop

SEA11:30Seattle/Tacoma Intl

9 Mar

SEA07:21Seattle/Tacoma Intl

23h 54m

2 stops

BHD14:15Belfast City

£678

British Airways

7 Mar

BHD06:35Belfast City

12h 55m

1 stop

SEA11:30Seattle/Tacoma Intl

9 Mar

SEA19:50Seattle/Tacoma Intl

15h 45m

1 stop

BHD18:35Belfast City

£679

British Airways

7 Mar

BHD06:35Belfast City

12h 55m

1 stop

SEA11:30Seattle/Tacoma Intl

9 Mar

SEA19:50Seattle/Tacoma Intl

15h 45m

1 stop

BHD18:35Belfast City

£679

Fly from

Fly to

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 7/3

06:35-11:30

1 stop12h 55m

Seattle/Tacoma Intl

Mon 9/3

07:21-14:15

2 stops23h 54m

£679

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 7/3

06:35-11:30

1 stop12h 55m

Seattle/Tacoma Intl

Mon 9/3

07:21-18:35

2 stops28h 14m

£679

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 7/3

06:35-11:30

1 stop12h 55m

Seattle/Tacoma Intl

Mon 9/3

19:50-18:35

1 stop15h 45m

£680

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 7/3

06:35-23:04

2 stops24h 29m

Seattle/Tacoma Intl

Mon 9/3

07:21-18:35

2 stops28h 14m

£683

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 7/3

06:35-23:04

2 stops24h 29m

Seattle/Tacoma Intl

Mon 9/3

13:37-14:15

2 stops17h 38m

£684

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Fri 27/3

08:05-19:20

2 stops18h 15m

Seattle/Tacoma Intl

Fri 3/4

19:10-21:15

2 stops18h 05m

£1,095

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Fri 27/3

09:55-20:45

2 stops17h 50m

Seattle/Tacoma Intl

Fri 3/4

05:40-19:50

3 stops30h 10m

£1,114

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Sat 28/3

19:50-17:15

2 stops28h 25m

Seattle/Tacoma Intl

Sat 4/4

08:00-16:35

3 stops24h 35m

£1,205

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Sat 28/3

19:50-17:15

2 stops28h 25m

Seattle/Tacoma Intl

Sat 4/4

14:10-20:40

2 stops22h 30m

£1,250

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Sat 28/3

09:25-21:53

3 stops43h 28m

Seattle/Tacoma Intl

Sat 4/4

08:00-16:35

3 stops24h 35m

£1,456

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 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	12h 55m
Direct flights	None

The fastest flight from Belfast to State of Washington takes 12h 55m

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 February 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 £551	Free Cancellation	Rating 7.2 11,275 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.