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

Prices for flights from Belfast to Washington refresh daily.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Belfast to Washington.

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

The travel and health documents you'll need for your trip to Washington may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$840 Cheap Flights from Belfast to Washington in 2025/26

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0 bags

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One-way

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12:25 pm - 4:55 pm

BHD

SEA

12h 30m1 stop

2:04 pm - 2:15 pm

SEA

BHD

40h 11m2 stops

$840British Airways

mié., ene. 28 - dom., feb. 1

11:25 am - 4:55 pm

BHD

SEA

13h 30m1 stop

2:04 pm - 2:15 pm

SEA

BHD

40h 11m2 stops

$841British Airways

mié., ene. 28 - dom., feb. 1

11:25 am - 4:55 pm

BHD

SEA

13h 30m1 stop

8:04 am - 1:55 pm

SEA

BHD

21h 51m2 stops

$875British Airways

mié., feb. 4 - dom., feb. 8

6:35 am - 10:07 pm

BHD

SEA

23h 32m2 stops

8:04 am - 1:55 pm

SEA

BHD

21h 51m2 stops

$886British Airways

mié., feb. 4 - dom., feb. 8

6:25 pm - 3:40 pm

BFS

SEA

29h 15m3 stops

2:35 pm - 8:20 pm

SEA

BFS

21h 45m2 stops

$1,059Multiple Airlines

dom., ene. 25 - dom., feb. 1

7:10 am - 5:00 pm

BFS

SEA

17h 50m2 stops

2:35 pm - 8:20 pm

SEA

BFS

21h 45m2 stops

$1,131Multiple Airlines

dom., ene. 25 - dom., feb. 1

10:45 pm - 3:40 pm

BFS

SEA

24h 55m3 stops

2:35 pm - 9:55 pm

SEA

BFS

23h 20m3 stops

$1,148Multiple Airlines

dom., ene. 25 - dom., feb. 1

5:20 pm - 3:51 pm

BHD

SEA

29h 31m2 stops

8:25 am - 4:55 pm

SEA

BHD

24h 30m2 stops

$1,450KLM

sáb., mar. 28 - vie., abr. 10

6:35 am - 12:30 pm

BHD

SEA

12h 55m1 stop

1:35 pm - 6:15 pm

SEA

BHD

20h 40m1 stop

$1,507Finnair

sáb., mar. 28 - vie., abr. 10

5:20 pm - 3:51 pm

BHD

SEA

29h 31m2 stops

2:05 pm - 4:55 pm

SEA

BHD

18h 50m1 stop

$1,528KLM

sáb., mar. 28 - vie., abr. 10

British Airways flights from Belfast to State of Washington

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

British Airways

Jan 28

BHD12:25 pmBelfast City

12h 30m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

Feb 1

SEA2:04 pmSeattle/Tacoma Intl

40h 11m

2 stops

BHD2:15 pmBelfast City

$840

Find similar

British Airways

Jan 28

BHD11:25 amBelfast City

13h 30m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

Feb 1

SEA2:04 pmSeattle/Tacoma Intl

40h 11m

2 stops

BHD2:15 pmBelfast City

$841

Find similar

British Airways

Feb 4

BHD11:25 amBelfast City

13h 30m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

Feb 8

SEA8:04 amSeattle/Tacoma Intl

21h 51m

2 stops

BHD1:55 pmBelfast City

$875

Find similar

KLM flights from Belfast to State of Washington

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

KLM

Mar 28

BHD5:20 pmBelfast City

29h 31m

2 stops

SEA3:51 pmSeattle/Tacoma Intl

Apr 10

SEA8:25 amSeattle/Tacoma Intl

24h 30m

2 stops

BHD4:55 pmBelfast City

$1,450

Find similar

KLM

Mar 28

BHD5:20 pmBelfast City

29h 31m

2 stops

SEA3:51 pmSeattle/Tacoma Intl

Apr 10

SEA2:05 pmSeattle/Tacoma Intl

18h 50m

1 stop

BHD4:55 pmBelfast City

$1,528

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

mié. 1/28

12:25 pm-4:55 pm

1 stop12h 30m

Seattle/Tacoma Intl

dom. 2/1

2:04 pm-2:15 pm

2 stops40h 11m

$840

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

mié. 1/28

11:25 am-4:55 pm

1 stop13h 30m

Seattle/Tacoma Intl

dom. 2/1

2:04 pm-2:15 pm

2 stops40h 11m

$841

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

mié. 2/4

11:25 am-4:55 pm

1 stop13h 30m

Seattle/Tacoma Intl

dom. 2/8

8:04 am-1:55 pm

2 stops21h 51m

$875

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

mié. 2/4

6:35 am-10:07 pm

2 stops23h 32m

Seattle/Tacoma Intl

dom. 2/8

8:04 am-1:55 pm

2 stops21h 51m

$886

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

dom. 1/25

6:25 pm-3:40 pm

3 stops29h 15m

Seattle/Tacoma Intl

dom. 2/1

2:35 pm-8:20 pm

2 stops21h 45m

$1,059

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

dom. 1/25

7:10 am-5:00 pm

2 stops17h 50m

Seattle/Tacoma Intl

dom. 2/1

2:35 pm-8:20 pm

2 stops21h 45m

$1,131

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

dom. 1/25

10:45 pm-3:40 pm

3 stops24h 55m

Seattle/Tacoma Intl

dom. 2/1

2:35 pm-9:55 pm

3 stops23h 20m

$1,148

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

sáb. 3/28

5:20 pm-3:51 pm

2 stops29h 31m

Seattle/Tacoma Intl

vie. 4/10

8:25 am-4:55 pm

2 stops24h 30m

$1,450

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

sáb. 3/28

6:35 am-12:30 pm

1 stop12h 55m

Seattle/Tacoma Intl

vie. 4/10

1:35 pm-6:15 pm

1 stop20h 40m

$1,507

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

sáb. 3/28

5:20 pm-3:51 pm

2 stops29h 31m

Seattle/Tacoma Intl

vie. 4/10

2:05 pm-4:55 pm

1 stop18h 50m

$1,528

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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 and Aer Lingus are the most popular carriers 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 30m
Direct flights	None

The fastest flight from Belfast to State of Washington takes 12h 30m

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 refresh daily.
How old do you have to be to fly from Belfast to Washington?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Belfast to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents you'll need for your trip to Washington may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Belfast to Washington. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Washington from Belfast on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Belfast and Washington by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Washington, momondo offers a useful price alert feature which will track prices for flights to Washington from Belfast and alert you when they change.