How do I get Price Alerts for flights from Northern Ireland to State of Washington?

You can take advantage of momondo’s Price Alerts by first searching for your flights to Northern Ireland from State of Washington . Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

How can I save money on flights from Northern Ireland 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?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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

Prices for flights from Northern Ireland to Washington are refreshed on a daily basis.

How old do you have to be to fly from Northern Ireland 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 Northern Ireland to Washington.

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

The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£376 Cheap Flights from Northern Ireland to Washington in 2026/27

Find the cheapest flights from Northern Ireland to Washington

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

07:00 - 18:00BFS Belfast Intl-SEA Seattle/Tacoma Intl

18h 00m2 stops London Gatwick Reykjavik Keflavik Intl

14:35 - 20:10SEA Seattle/Tacoma Intl-BFS Belfast Intl

21h 35m2 stops Reykjavik Keflavik Intl London Gatwick

£677Multiple Airlines

Tue, 27 Oct - Tue, 3 Nov

07:00 - 18:00BFS Belfast Intl-SEA Seattle/Tacoma Intl

18h 00m2 stops London Gatwick Reykjavik Keflavik Intl

11:26 - 20:10SEA Seattle/Tacoma Intl-BFS Belfast Intl

24h 44m3 stops Vancouver Intl Reykjavik Keflavik Intl London Gatwick

£811Multiple Airlines

Tue, 27 Oct - Tue, 3 Nov

07:00 - 18:00BFS Belfast Intl-SEA Seattle/Tacoma Intl

18h 00m2 stops London Gatwick Reykjavik Keflavik Intl

16:05 - 18:50SEA Seattle/Tacoma Intl-BFS Belfast Intl

18h 45m1 stop Paris Charles de Gaulle

£953Multiple Airlines

Tue, 27 Oct - Tue, 3 Nov

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Tue 27/10

07:00-18:00

2 stops18h 00m

Seattle/Tacoma Intl

Tue 3/11

14:35-20:10

2 stops21h 35m

£677

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Tue 27/10

07:00-18:00

2 stops18h 00m

Seattle/Tacoma Intl

Tue 3/11

11:26-20:10

3 stops24h 44m

£811

Fastest return journey

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Tue 27/10

07:00-18:00

2 stops18h 00m

Seattle/Tacoma Intl

Tue 3/11

16:05-18:50

1 stop18h 45m

£953

Cheapest one-way

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Thu 15/10

20:40-09:40

2 stops45h 00m

£376

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Thu 15/10

20:40-07:08

3 stops42h 28m

£423

Fastest single journey

BelfastSeattle

BFS Belfast Intl - SEA Seattle/Tacoma Intl

BFSSEA

Belfast Intl

Thu 15/10

09:15-19:00

1 stop17h 45m

£462

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Cheap Northern Ireland to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to State of Washington

Best price found	£376
Fastest flight time	12h 50m
Direct flights	None

The best one-way flight to State of Washington from Northern Ireland in the past 72 hours is £376. The best return flight deal from Northern Ireland to State of Washington found on momondo in the last 72 hours is £677.

The fastest flight from Northern Ireland to State of Washington takes 12h 50m

There are no direct flights from Northern Ireland to State of Washington. There are no popular flight routes from Northern Ireland to State of Washington.

Search flight deals

Frequently asked questions about flying from Northern Ireland to Washington

When did momondo last update prices for flights from Northern Ireland to Washington?
Prices for flights from Northern Ireland to Washington are refreshed on a daily basis.
How old do you have to be to fly from Northern Ireland 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 Northern Ireland to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Northern Ireland to Washington

How do I get Price Alerts for flights from Northern Ireland to State of Washington?
You can take advantage of momondo’s Price Alerts by first searching for your flights to Northern Ireland from State of Washington. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.
How can I save money on flights from Northern Ireland 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?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

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

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

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

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

How can momondo help me find flights from Northern Ireland to Washington?

Once you have performed a search for Northern Ireland to Washington flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Washington from Northern Ireland. 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.