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?

With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

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 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.

$656 Cheap Flights from Belfast to Washington in 2026/27

Find the cheapest flights from Belfast to Washington

Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:00 am - 8:14 pmBFS Belfast Intl-SEA Seattle/Tacoma Intl

18h 14m1 stop London Luton

5:30 pm - 6:50 pmSEA Seattle/Tacoma Intl-BFS Belfast Intl

17h 20m1 stop London Heathrow

$656Multiple Airlines

Mon, Oct 12 - Mon, Oct 19

7:00 am - 8:14 pmBHD Belfast City-SEA Seattle/Tacoma Intl

21h 14m1 stop London Gatwick

5:30 pm - 8:30 pmSEA Seattle/Tacoma Intl-BHD Belfast City

19h 00m1 stop London Heathrow

$681Multiple Airlines

Mon, Oct 12 - Mon, Oct 19

9:15 am - 4:50 pmBHD Belfast City-SEA Seattle/Tacoma Intl

15h 35m1 stop London Heathrow

6:45 pm - 5:25 pmSEA Seattle/Tacoma Intl-BHD Belfast City

14h 40m1 stop London Heathrow

$755British Airways

Wed, Nov 18 - Fri, Dec 11

6:55 am - 9:32 amBFS Belfast Intl-SEA Seattle/Tacoma Intl

34h 37m3 stops Paris Charles de Gaulle Calgary Vancouver Intl

2:35 pm - 10:35 pmSEA Seattle/Tacoma Intl-BFS Belfast Intl

24h 00m2 stops Reykjavik Keflavik Intl Manchester

$755Multiple Airlines

Wed, Nov 18 - Fri, Dec 11

5:35 pm - 11:25 amBHD Belfast City-SEA Seattle/Tacoma Intl

25h 50m1 stop London Heathrow

9:15 am - 10:55 amSEA Seattle/Tacoma Intl-BHD Belfast City

17h 40m2 stops Philadelphia London Heathrow

$758British Airways

Wed, Nov 18 - Fri, Dec 11

6:30 am - 11:35 amBHD Belfast City-SEA Seattle/Tacoma Intl

13h 05m1 stop London Heathrow

10:31 am - 12:55 pmSEA Seattle/Tacoma Intl-BHD Belfast City

18h 24m2 stops Chicago O'Hare Intl London Heathrow

$761Multiple Airlines

Mon, Oct 12 - Mon, Oct 19

12:20 pm - 12:35 amBHD Belfast City-SEA Seattle/Tacoma Intl

20h 15m2 stops London Heathrow Chicago O'Hare Intl

6:14 am - 10:55 amSEA Seattle/Tacoma Intl-BHD Belfast City

20h 41m2 stops Chicago O'Hare Intl London Heathrow

$772British Airways

Wed, Nov 18 - Fri, Dec 11

8:35 pm - 11:35 amBHD Belfast City-SEA Seattle/Tacoma Intl

23h 00m1 stop London Heathrow

8:20 pm - 8:35 pmSEA Seattle/Tacoma Intl-BHD Belfast City

16h 15m1 stop London Heathrow

$801British Airways

Thu, Oct 15 - Mon, Oct 19

6:55 am - 9:32 amBFS Belfast Intl-SEA Seattle/Tacoma Intl

34h 37m3 stops Paris Charles de Gaulle Calgary Vancouver Intl

2:35 pm - 10:35 pmSEA Seattle/Tacoma Intl-BFS Belfast Intl

24h 00m3 stops Reykjavik Keflavik Intl Berlin Brandenburg Manchester

$802Multiple Airlines

Wed, Nov 18 - Fri, Dec 11

8:35 pm - 11:35 amBHD Belfast City-SEA Seattle/Tacoma Intl

23h 00m1 stop London Heathrow

3:14 pm - 3:30 pmSEA Seattle/Tacoma Intl-BHD Belfast City

16h 16m2 stops Chicago O'Hare Intl London Heathrow

$805British Airways

Thu, Oct 15 - Mon, Oct 19

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

British Airways flights from Belfast to State of Washington

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

British Airways

Nov 18

BHD9:15 amBelfast City

15h 35m

1 stop

SEA4:50 pmSeattle/Tacoma Intl

Dec 11

SEA6:45 pmSeattle/Tacoma Intl

14h 40m

1 stop

BHD5:25 pmBelfast City

$755

British Airways

Nov 18

BHD5:35 pmBelfast City

25h 50m

1 stop

SEA11:25 amSeattle/Tacoma Intl

Dec 11

SEA9:15 amSeattle/Tacoma Intl

17h 40m

2 stops

BHD10:55 amBelfast City

$758

British Airways

Nov 18

BHD12:20 pmBelfast City

20h 15m

2 stops

SEA12:35 amSeattle/Tacoma Intl

Dec 11

SEA6:14 amSeattle/Tacoma Intl

20h 41m

2 stops

BHD10:55 amBelfast City

$772

momondo Fare Finder

Use the filters below to find and compare flights from Belfast to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Mon 10/12

10:00 am-8:14 pm

1 stop18h 14m

Seattle/Tacoma Intl

Mon 10/19

5:30 pm-6:50 pm

1 stop17h 20m

$656

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Mon 10/12

7:00 am-8:14 pm

1 stop21h 14m

Seattle/Tacoma Intl

Mon 10/19

5:30 pm-8:30 pm

1 stop19h 00m

$681

Quickest round-trip

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 11/18

9:15 am-4:50 pm

1 stop15h 35m

Seattle/Tacoma Intl

Fri 12/11

6:45 pm-5:25 pm

1 stop14h 40m

$755

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Wed 11/18

6:55 am-9:32 am

3 stops34h 37m

Seattle/Tacoma Intl

Fri 12/11

2:35 pm-10:35 pm

2 stops24h 00m

$755

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 11/18

5:35 pm-11:25 am

1 stop25h 50m

Seattle/Tacoma Intl

Fri 12/11

9:15 am-10:55 am

2 stops17h 40m

$758

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Mon 10/12

6:30 am-11:35 am

1 stop13h 05m

Seattle/Tacoma Intl

Mon 10/19

10:31 am-12:55 pm

2 stops18h 24m

$761

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 11/18

12:20 pm-12:35 am

2 stops20h 15m

Seattle/Tacoma Intl

Fri 12/11

6:14 am-10:55 am

2 stops20h 41m

$772

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 10/15

8:35 pm-11:35 am

1 stop23h 00m

Seattle/Tacoma Intl

Mon 10/19

8:20 pm-8:35 pm

1 stop16h 15m

$801

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Wed 11/18

6:55 am-9:32 am

3 stops34h 37m

Seattle/Tacoma Intl

Fri 12/11

2:35 pm-10:35 pm

3 stops24h 00m

$802

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 10/15

8:35 pm-11:35 am

1 stop23h 00m

Seattle/Tacoma Intl

Mon 10/19

3:14 pm-3:30 pm

2 stops16h 16m

$805

Flights are sorted by cheapest round-trip 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

Best Price Found	$656
Fastest flight time	13h 40m
Direct flights	None

The best flight deal from Belfast to State of Washington found on momondo in the last 72 hours is $656

The fastest flight from Belfast to State of Washington takes 13h 40m

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

Frequently asked questions about flying from Belfast to Washington

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.

Frequently asked questions about flying from Belfast to Washington

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?
With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.
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?

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.