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.

£313 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

19:50 - 18:35

SEA

BHD

15h 45m

1 stop

£654British Airways

Sat, 7 Mar - Mon, 9 Mar

06:30 - 18:40

BHD

SEA

19h 10m

2 stops

17:30 - 09:20

SEA

BHD

31h 50m

1 stop

£657KLM

Mon, 23 Mar - Mon, 30 Mar

06:35 - 23:04

BHD

SEA

24h 29m

2 stops

07:21 - 14:15

SEA

BHD

23h 54m

2 stops

£658British Airways

Sat, 7 Mar - Mon, 9 Mar

06:35 - 23:04

BHD

SEA

24h 29m

2 stops

07:21 - 10:40

SEA

BHD

20h 19m

2 stops

£659British Airways

Sat, 7 Mar - Mon, 9 Mar

06:35 - 11:30

BHD

SEA

12h 55m

1 stop

07:21 - 14:15

SEA

BHD

23h 54m

2 stops

£678British Airways

Sat, 7 Mar - Mon, 9 Mar

06:35 - 23:04

BHD

SEA

24h 29m

2 stops

13:37 - 18:35

SEA

BHD

21h 58m

2 stops

£682British Airways

Sat, 7 Mar - Mon, 9 Mar

06:30 - 11:35

BHD

SEA

13h 05m

1 stop

20:20 - 18:45

SEA

BHD

14h 25m

1 stop

£688British Airways

Mon, 18 May - Thu, 28 May

09:50 - 11:42

BHD

SEA

33h 52m

1 stop

09:34 - 09:20

SEA

BHD

15h 46m

2 stops

£692KLM

Mon, 18 May - Thu, 28 May

09:50 - 20:41

BHD

SEA

18h 51m

2 stops

10:40 - 09:20

SEA

BHD

14h 40m

2 stops

£701KLM

Mon, 18 May - Thu, 28 May

18:25 - 18:00

BFS

SEA

30h 35m

3 stops

15:40 - 15:55

SEA

BFS

16h 15m

2 stops

£702Multiple Airlines

Wed, 25 Mar - Wed, 1 Apr

American Airlines flights from Belfast to State of Washington

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

American Airlines

10 Feb

BHD10:00Belfast City

14h 55m

1 stop

SEA16:55Seattle/Tacoma Intl

15 Feb

SEA22:57Seattle/Tacoma Intl

27h 43m

2 stops

BHD10:40Belfast City

£928

American Airlines

10 Feb

BHD06:35Belfast City

23h 32m

2 stops

SEA22:07Seattle/Tacoma Intl

15 Feb

SEA22:57Seattle/Tacoma Intl

27h 43m

2 stops

BHD10:40Belfast City

£946

American Airlines

10 Feb

BHD11:25Belfast City

13h 30m

1 stop

SEA16:55Seattle/Tacoma Intl

14 Feb

SEA22:57Seattle/Tacoma Intl

27h 23m

2 stops

BHD10:20Belfast City

£959

Finnair flights from Belfast to State of Washington

Our best Finnair deals on Belfast to State of Washington flight tickets

Finnair

10 Feb

BHD11:25Belfast City

13h 30m

1 stop

SEA16:55Seattle/Tacoma Intl

13 Feb

SEA06:44Seattle/Tacoma Intl

23h 31m

2 stops

BHD14:15Belfast City

£1,963

Finnair

10 Feb

BHD11:25Belfast City

42h 22m

2 stops

SEA21:47Seattle/Tacoma Intl

14 Feb

SEA06:44Seattle/Tacoma Intl

23h 31m

2 stops

BHD14:15Belfast City

£2,036

Finnair

10 Feb

BHD11:25Belfast City

13h 30m

1 stop

SEA16:55Seattle/Tacoma Intl

12 Feb

SEA06:44Seattle/Tacoma Intl

23h 16m

2 stops

BHD14:00Belfast City

£2,789

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

19:50-18:35

1 stop15h 45m

£654

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 23/3

06:30-18:40

2 stops19h 10m

Seattle/Tacoma Intl

Mon 30/3

17:30-09:20

1 stop31h 50m

£657

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 7/3

06:35-23:04

2 stops24h 29m

Seattle/Tacoma Intl

Mon 9/3

07:21-14:15

2 stops23h 54m

£658

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 7/3

06:35-23:04

2 stops24h 29m

Seattle/Tacoma Intl

Mon 9/3

07:21-10:40

2 stops20h 19m

£659

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

£678

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 7/3

06:35-23:04

2 stops24h 29m

Seattle/Tacoma Intl

Mon 9/3

13:37-18:35

2 stops21h 58m

£682

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 18/5

06:30-11:35

1 stop13h 05m

Seattle/Tacoma Intl

Thu 28/5

20:20-18:45

1 stop14h 25m

£688

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 18/5

09:50-11:42

1 stop33h 52m

Seattle/Tacoma Intl

Thu 28/5

09:34-09:20

2 stops15h 46m

£692

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 18/5

09:50-20:41

2 stops18h 51m

Seattle/Tacoma Intl

Thu 28/5

10:40-09:20

2 stops14h 40m

£701

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Wed 25/3

18:25-18:00

3 stops30h 35m

Seattle/Tacoma Intl

Wed 1/4

15:40-15:55

2 stops16h 15m

£702

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 £552	Free Cancellation	Rating 7.2 11,258 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.