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Cheap flights from Northern Ireland to Washington from £627

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to Washington departing on 28/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Northern Ireland to Washington

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
12:25 - 16:55
BHD
-
SEA
12h 30m1 stop
British Airways Logo
14:04 - 14:15
SEA
-
BHD
40h 11m2 stops
£627British Airways
Wed, 28 Jan - Sun, 1 Feb
British Airways Logo
12:25 - 16:55
BHD
-
SEA
12h 30m1 stop
British Airways Logo
14:04 - 10:40
SEA
-
BHD
36h 36m2 stops
£628British Airways
Wed, 28 Jan - Sun, 1 Feb
British Airways Logo
06:35 - 13:14
BHD
-
SEA
38h 39m2 stops
British Airways Logo
14:04 - 14:15
SEA
-
BHD
40h 11m2 stops
£631British Airways
Wed, 28 Jan - Sun, 1 Feb
British Airways Logo
11:25 - 16:55
BHD
-
SEA
13h 30m1 stop
British Airways Logo
08:04 - 10:20
SEA
-
BHD
18h 16m2 stops
£653British Airways
Wed, 4 Feb - Sun, 8 Feb
British Airways Logo
11:25 - 16:55
BHD
-
SEA
13h 30m1 stop
British Airways Logo
18:50 - 16:50
SEA
-
BHD
14h 00m1 stop
£656British Airways
Wed, 4 Feb - Sun, 8 Feb
British Airways Logo
06:35 - 22:07
BHD
-
SEA
23h 32m2 stops
British Airways Logo
08:04 - 10:20
SEA
-
BHD
18h 16m2 stops
£662British Airways
Wed, 4 Feb - Sun, 8 Feb
British Airways Logo
06:35 - 22:07
BHD
-
SEA
23h 32m2 stops
British Airways Logo
08:04 - 13:55
SEA
-
BHD
21h 51m2 stops
£665British Airways
Wed, 4 Feb - Sun, 8 Feb
Multiple Airlines Logo
18:25 - 15:40
BFS
-
SEA
29h 15m3 stops
Multiple Airlines Logo
14:35 - 20:20
SEA
-
BFS
21h 45m2 stops
£791Multiple Airlines
Sun, 25 Jan - Sun, 1 Feb
Multiple Airlines Logo
07:10 - 17:00
BFS
-
SEA
17h 50m2 stops
Multiple Airlines Logo
14:35 - 20:20
SEA
-
BFS
21h 45m2 stops
£845Multiple Airlines
Sun, 25 Jan - Sun, 1 Feb
Multiple Airlines Logo
22:45 - 15:40
BFS
-
SEA
24h 55m3 stops
Multiple Airlines Logo
14:35 - 21:55
SEA
-
BFS
23h 20m3 stops
£857Multiple Airlines
Sun, 25 Jan - Sun, 1 Feb

British Airways flights from Northern Ireland to State of Washington

Our best British Airways deals on Northern Ireland to State of Washington flight tickets
British Airways
28 Jan
BHD12:25Belfast City
12h 30m
1 stop
SEA16:55Seattle/Tacoma Intl
1 Feb
SEA14:04Seattle/Tacoma Intl
40h 11m
2 stops
BHD14:15Belfast City
£627
Find similar
British Airways
28 Jan
BHD09:15Belfast City
35h 59m
2 stops
SEA13:14Seattle/Tacoma Intl
1 Feb
SEA14:04Seattle/Tacoma Intl
36h 36m
2 stops
BHD10:40Belfast City
£628
Find similar
British Airways
28 Jan
BHD06:35Belfast City
38h 39m
2 stops
SEA13:14Seattle/Tacoma Intl
1 Feb
SEA14:04Seattle/Tacoma Intl
40h 11m
2 stops
BHD14:15Belfast City
£631
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Northern Ireland to State of Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 12 December 2025.
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

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 28/1

12:25-16:55

1 stop12h 30m

Seattle/Tacoma Intl

Sun 1/2

14:04-14:15

2 stops40h 11m

£627

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 28/1

12:25-16:55

1 stop12h 30m

Seattle/Tacoma Intl

Sun 1/2

14:04-10:40

2 stops36h 36m

£628

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 28/1

06:35-13:14

2 stops38h 39m

Seattle/Tacoma Intl

Sun 1/2

14:04-14:15

2 stops40h 11m

£631

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 4/2

11:25-16:55

1 stop13h 30m

Seattle/Tacoma Intl

Sun 8/2

08:04-10:20

2 stops18h 16m

£653

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 4/2

11:25-16:55

1 stop13h 30m

Seattle/Tacoma Intl

Sun 8/2

18:50-16:50

1 stop14h 00m

£656

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 4/2

06:35-22:07

2 stops23h 32m

Seattle/Tacoma Intl

Sun 8/2

08:04-10:20

2 stops18h 16m

£662

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 4/2

06:35-22:07

2 stops23h 32m

Seattle/Tacoma Intl

Sun 8/2

08:04-13:55

2 stops21h 51m

£665

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Sun 25/1

18:25-15:40

3 stops29h 15m

Seattle/Tacoma Intl

Sun 1/2

14:35-20:20

2 stops21h 45m

£791

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Sun 25/1

07:10-17:00

2 stops17h 50m

Seattle/Tacoma Intl

Sun 1/2

14:35-20:20

2 stops21h 45m

£845

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Sun 25/1

22:45-15:40

3 stops24h 55m

Seattle/Tacoma Intl

Sun 1/2

14:35-21:55

3 stops23h 20m

£857

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

Fastest flight time

13h 30m

Direct flights

None
The fastest flight from Northern Ireland to State of Washington takes 13h 30m
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

  • 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 many operators does momondo search for flights from Northern Ireland to Washington?

  • 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.

Best airlines flying from Northern Ireland to State of Washington

Compare and see reviews for airlines that fly from Northern Ireland to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £439Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
American AirlinesPriceFrom £561Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights

  • 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.

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