How long is the flight from Northern Ireland to State of Washington?

For as low as £710, British Airways can have you in State of Washington from Northern Ireland in 13h 10m. The distance between Northern Ireland and State of Washington is about 4472 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in State of Washington ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit State of Washington when rainfall is around 18.0 mm.

If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest time of day to fly from NIR to WA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to State of Washington as you normally would.

Can I find deals for flights from Northern Ireland to Washington that include hotel bookings?

Yes. In addition to deals on Northern Ireland to Washington flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Northern Ireland to Washington?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Washington.

Can I find deals for business class flights from Northern Ireland to Washington?

Yes. Cheapflights offers flight deals from Northern Ireland to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£400+ Cheap Flights from Northern Ireland to Washington

Cheap flight deals from Northern Ireland to Washington

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Cheapest flights from Northern Ireland to Washington
Explore the most affordable flight options available from Northern Ireland to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 November 2026.

Wed 2/1209:15 -

1 stop15h 35m

Wed 9/1218:45 -

1 stop16h 20m

Deal found 4/11£699

Wed 2/1217:55 -

3 stops31h 05m

Wed 9/1214:35 -

3 stops18h 05m

Deal found 4/11£803

Find flight deals from Northern Ireland to Washington

Round-trip from	£699
One-way from	£400

British Airways
2/12-9/12
2 total stops
31h 55m total
Northern Ireland to Washington

Search Deals

26/3-31/12
3 total stops
44h 20m total
Northern Ireland to Washington

Search Deals

Cheapflights Fare Finder

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

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Fri 26/3

07:20-20:40

3 stops44h 20m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£400

Fastest return journey

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Fri 26/3

08:35-17:50

1 stop16h 15m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£422

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Mon 29/3

07:00-20:40

3 stops21h 40m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£490

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 2/12

11:40-16:50

1 stop13h 10m

Seattle/Tacoma Intl

Wed 9/12

09:15-10:05

2 stops16h 50m

£710

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Sat 20/2

11:45-00:34

2 stops20h 49m

Seattle/Tacoma Intl

Mon 5/7

20:20-17:30

1 stop13h 10m

£746

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Thu 21/1

14:10-16:50

1 stop34h 40m

Seattle/Tacoma Intl

Sun 24/1

18:45-16:50

1 stop14h 05m

£762

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Sat 20/2

06:35-11:25

1 stop12h 50m

Seattle/Tacoma Intl

Sat 20/2

13:40-11:10

1 stop13h 30m

£764

BelfastSeattle

BHD Belfast City - SEA Seattle/Tacoma Intl

BHDSEA

Belfast City

Wed 5/5

20:35-11:35

1 stop23h 00m

Seattle/Tacoma Intl

Sun 9/5

17:40-20:35

2 stops18h 55m

£768

Flights are sorted by cheapest return flights first.

Deals found on 6/11

Sorted by cheapest first

Best time to book a flight from Northern Ireland to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Northern Ireland with our price prediction graph.

BHD-SEA

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Northern Ireland to Washington

GBNIR-USWA

BHD-SEA

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Northern Ireland to State of Washington?
For as low as £710, British Airways can have you in State of Washington from Northern Ireland in 13h 10m. The distance between Northern Ireland and State of Washington is about 4472 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
Can I find deals for flights from Northern Ireland to Washington that include hotel bookings?
Yes. In addition to deals on Northern Ireland to Washington flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Northern Ireland to Washington?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Washington.
Can I find deals for business class flights from Northern Ireland to Washington?
Yes. Cheapflights offers flight deals from Northern Ireland to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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How does Cheapflights help users find flights from Northern Ireland to Washington?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Northern Ireland to Washington. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Washington?

Millions of users choose and trust Cheapflights to book the best flight deals from Northern Ireland to Washington for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Northern Ireland to Washington with no change fees?

Yes, we can. To see specific flights from Northern Ireland to Washington with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Northern Ireland to Washington become cheaper?

Of course! You can now track prices for flights from Northern Ireland to Washington and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Northern Ireland to Washington from £400

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Northern Ireland to Washington

Cheapest flights from Northern Ireland to WashingtonExplore the most affordable flight options available from Northern Ireland to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 November 2026.

Explore the most affordable flight options available from Northern Ireland to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 November 2026.

Best flights from Northern Ireland to WashingtonDiscover carefully curated flight deals from Northern Ireland to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 November 2026.

Discover carefully curated flight deals from Northern Ireland to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 November 2026.

Last-minute flights from Northern Ireland to WashingtonDiscover last-minute flight deals from Northern Ireland to Washington. Data last updated 9 November 2026 and is based on user searches.

Discover last-minute flight deals from Northern Ireland to Washington. Data last updated 9 November 2026 and is based on user searches.

One-way flights from Northern Ireland to WashingtonSearch for one-way flight options from Northern Ireland to Washington. Find affordable one-way fares based on user searches. Data last updated 9 November 2026.

Search for one-way flight options from Northern Ireland to Washington. Find affordable one-way fares based on user searches. Data last updated 9 November 2026.

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

Best time to book a flight from Northern Ireland to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Northern Ireland with our price prediction graph.

Cheapflights Insights

Related info for your journey

How long is the flight from Northern Ireland to State of Washington?

Can I find deals for flights from Northern Ireland to Washington that include hotel bookings?

How can I find direct flights from Northern Ireland to Washington?

Can I find deals for business class flights from Northern Ireland to Washington?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Northern Ireland to Washington

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Washington by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Northern Ireland to Washington by cabin class

Find flights from Northern Ireland to Washington, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Northern Ireland and Washington flights

Browse other Northern Ireland and Washington flight options. Last updated on 9 November 2026.

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Find a return flight route from Washington

Find the right flight back to Northern Ireland after your stay in Washington

Northern Ireland to Washington flights

Consider these flights travelling from Northern Ireland to Washington.

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How does Cheapflights help users find flights from Northern Ireland to Washington?

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Washington?

Can Cheapflights find flights from Northern Ireland to Washington with no change fees?

Can Cheapflights notify me if prices for flights from Northern Ireland to Washington become cheaper?

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Cheapest flights from Northern Ireland to Washington
Explore the most affordable flight options available from Northern Ireland to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 November 2026.

Best flights from Northern Ireland to Washington
Discover carefully curated flight deals from Northern Ireland to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 November 2026.

Last-minute flights from Northern Ireland to Washington
Discover last-minute flight deals from Northern Ireland to Washington. Data last updated 9 November 2026 and is based on user searches.

One-way flights from Northern Ireland to Washington
Search for one-way flight options from Northern Ireland to Washington. Find affordable one-way fares based on user searches. Data last updated 9 November 2026.