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

British Airways can get you from State of Washington to Northern Ireland in just under 14h 50m. Your travel time can differ by up to . There are 4585 mi between State of Washington and Northern Ireland.

In terms of precipitation, rainfall in Northern Ireland ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Northern Ireland when rainfall is around 2.0 in.

If weather is an important factor for your trip to Northern Ireland, 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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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

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

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

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

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

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

$314+ Flights from Washington to Northern Ireland

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Cheap flight deals from Washington to Northern Ireland

Cheapest flights from Washington to Northern Ireland
Explore the most affordable flight options available from Washington to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.

Wed 12/109:00 amSEA - BHD

2 stops17h 15mMultiple Airlines

Thu 12/113:25 pmBHD - SEA

2 stops34h 55mMultiple Airlines

Deal found 12/8

$1,943

Wed 12/109:00 amSEA - BHD

2 stops17h 15mBritish Airways

Thu 12/118:00 pmBHD - SEA

1 stop23h 30mBritish Airways

Deal found 12/8

$4,642

Best flights from Washington to Northern Ireland
Discover carefully curated flight deals from Washington to Northern Ireland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 8, 2025.

Wed 3/42:35 pmSEA - BFS

2 stops20h 45mMultiple Airlines

Wed 3/117:20 amBFS - SEA

2 stops17h 40mMultiple Airlines

Deal found 12/7

$554

Wed 2/115:45 pmPDX - BHD

1 stop14h 50mBritish Airways

Sun 2/158:25 pmBHD - PDX

1 stop27h 30mBritish Airways

Deal found 12/5

$623

Tue 3/177:05 amPDX - BHD

2 stops26h 45mDelta

Tue 3/315:30 pmBHD - PDX

1 stop25h 40mDelta

Deal found 12/7

$698

Tue 1/202:35 pmSEA - BFS

2 stops21h 40mMultiple Airlines

Tue 1/276:30 amBFS - SEA

2 stops18h 30mMultiple Airlines

Deal found 12/6

$600

Fri 1/306:50 pmSEA - BHD

1 stop14h 25mBritish Airways

Tue 2/33:05 pmBHD - SEA

1 stop33h 50mBritish Airways

Deal found 12/6

$624

Thu 1/87:00 amPDX - BHD

2 stops19h 20mMultiple Airlines

Mon 1/199:15 amBHD - PDX

2 stops19h 13mMultiple Airlines

Deal found 12/7

$637

Fri 5/15:54 amPDX - BHD

2 stops25h 36mBritish Airways

Fri 5/1511:55 amBHD - PDX

1 stop13h 45mBritish Airways

Deal found 12/6

$709

Tue 3/175:40 pmPDX - BHD

2 stops18h 00mMultiple Airlines

Tue 3/319:35 amBHD - PDX

2 stops19h 14mMultiple Airlines

Deal found 12/7

$686

Wed 3/41:23 pmSEA - BHD

2 stops16h 52mBritish Airways

Wed 3/119:15 amBHD - SEA

1 stop15h 40mBritish Airways

Deal found 12/7

$760

Wed 1/212:35 pmSEA - BFS

2 stops21h 00mMultiple Airlines

Wed 1/286:30 amBFS - SEA

2 stops18h 30mMultiple Airlines

Deal found 12/7

$696

Sun 3/16:50 pmSEA - BHD

1 stop14h 00mBritish Airways

Wed 3/119:15 amBHD - SEA

1 stop15h 40mBritish Airways

Deal found 12/7

$765

Mon 3/97:50 pmSEA - BHD

1 stop15h 45mBritish Airways

Thu 3/193:05 pmBHD - SEA

1 stop33h 50mBritish Airways

Deal found 12/8

$765

Mon 3/26:50 pmSEA - BHD

1 stop13h 15mBritish Airways

Tue 3/106:35 amBHD - SEA

1 stop12h 55mBritish Airways

Deal found 12/7

$765

Thu 1/87:45 amPDX - BFS

2 stops29h 50mMultiple Airlines

Mon 1/196:30 amBFS - PDX

2 stops24h 02mMultiple Airlines

Deal found 12/7

$847

Mon 3/26:50 pmSEA - BHD

1 stop13h 15mBritish Airways

Thu 3/1210:40 amBHD - SEA

1 stop14h 15mBritish Airways

Deal found 12/7

$765

Mon 3/26:50 pmSEA - BHD

1 stop15h 45mBritish Airways

Wed 3/119:15 amBHD - SEA

1 stop15h 40mBritish Airways

Deal found 12/7

$765

Tue 3/31:25 pmSEA - BHD

1 stop14h 05mBritish Airways

Mon 3/99:15 amBHD - SEA

1 stop34h 15mBritish Airways

Deal found 12/7

$765

Wed 3/46:50 pmSEA - BHD

1 stop16h 20mBritish Airways

Tue 3/178:45 amBHD - SEA

1 stop16h 10mBritish Airways

Deal found 12/8

$765

Wed 3/46:50 pmSEA - BHD

1 stop16h 20mBritish Airways

Tue 3/103:05 pmBHD - SEA

1 stop33h 50mBritish Airways

Deal found 12/7

$765

Mon 3/97:50 pmSEA - BHD

1 stop15h 45mBritish Airways

Wed 3/1811:25 amBHD - SEA

1 stop13h 30mBritish Airways

Deal found 12/8

$765

Thu 1/84:51 pmPDX - BHD

2 stops19h 39mBritish Airways

Mon 1/196:35 amBHD - PDX

1 stop17h 20mBritish Airways

Deal found 12/7

$796

Thu 1/229:50 amPDX - BFS

3 stops28h 15mMultiple Airlines

Thu 1/296:30 amBFS - PDX

3 stops34h 45mMultiple Airlines

Deal found 12/8

$1,729

Fri 1/302:30 pmPDX - BHD

2 stops20h 45mBritish Airways

Tue 2/38:45 amBHD - PDX

2 stops22h 01mBritish Airways

Deal found 12/5

$838

Sat 1/32:45 pmPDX - BFS

2 stops23h 35mMultiple Airlines

Sat 1/108:10 amBFS - PDX

2 stops33h 05mMultiple Airlines

Deal found 12/6

$1,771

Last-minute flights from Washington to Northern Ireland
Discover last-minute flight deals from Washington to Northern Ireland. Data last updated December 8, 2025 and is based on user searches.

Wed 12/109:00 amSEA - BHD

2 stops17h 15mMultiple Airlines

Thu 12/113:25 pmBHD - SEA

2 stops34h 55mMultiple Airlines

Deal found 12/8

$1,943

Sat 1/310:23 amPDX - BHD

2 stops22h 22mMultiple Airlines

Sat 1/106:00 pmBHD - PDX

2 stops58h 43mMultiple Airlines

Deal found 12/6

$1,235

Sat 1/310:23 amPDX - BHD

2 stops22h 22mBritish Airways

Sat 1/103:05 pmBHD - PDX

1 stop32h 50mBritish Airways

Deal found 12/6

$1,558

Sat 1/32:45 pmPDX - BFS

2 stops23h 35mMultiple Airlines

Sat 1/108:10 amBFS - PDX

2 stops33h 05mMultiple Airlines

Deal found 12/6

$1,771

Thu 1/87:00 amPDX - BHD

2 stops19h 20mMultiple Airlines

Mon 1/199:15 amBHD - PDX

2 stops19h 13mMultiple Airlines

Deal found 12/7

$637

Thu 1/84:51 pmPDX - BHD

2 stops19h 39mBritish Airways

Mon 1/196:35 amBHD - PDX

1 stop17h 20mBritish Airways

Deal found 12/7

$796

Thu 1/87:45 amPDX - BFS

2 stops29h 50mMultiple Airlines

Mon 1/196:30 amBFS - PDX

2 stops24h 02mMultiple Airlines

Deal found 12/7

$847

Wed 1/212:35 pmSEA - BFS

2 stops21h 00mMultiple Airlines

Wed 1/286:30 amBFS - SEA

2 stops18h 30mMultiple Airlines

Deal found 12/7

$696

Thu 1/222:35 pmSEA - BFS

2 stops21h 50mMultiple Airlines

Thu 1/297:05 amBFS - SEA

2 stops17h 55mMultiple Airlines

Deal found 12/8

$599

Thu 1/229:50 amPDX - BFS

3 stops28h 15mMultiple Airlines

Thu 1/296:30 amBFS - PDX

3 stops34h 45mMultiple Airlines

Deal found 12/8

$1,729

Fri 1/306:50 pmSEA - BHD

1 stop14h 25mBritish Airways

Tue 2/33:05 pmBHD - SEA

1 stop33h 50mBritish Airways

Deal found 12/7

$624

Fri 1/302:30 pmPDX - BHD

2 stops20h 45mBritish Airways

Tue 2/38:45 amBHD - PDX

2 stops22h 01mBritish Airways

Deal found 12/5

$838

One-way flights from Washington to Northern Ireland
Search for one-way flight options from Washington to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated December 8, 2025.

Thu 3/123:35 pmSEA - BFS

2 stops24h 00mMultiple Airlines

Deal found 12/6

$314

Wed 3/42:35 pmSEA - BFS

2 stops20h 45mMultiple Airlines

Deal found 12/7

$319

Fri 3/132:35 pmSEA - BFS

2 stops21h 20mMultiple Airlines

Deal found 12/6

$409

Wed 3/46:50 pmSEA - BHD

1 stop17h 25mBritish Airways

Deal found 12/7

$429

Sun 3/16:50 pmSEA - BHD

1 stop14h 00mBritish Airways

Deal found 12/7

$440

Tue 3/31:44 pmSEA - BHD

2 stops17h 06mBritish Airways

Deal found 12/7

$449

Sun 3/18:30 amSEA - BHD

2 stops28h 30mDelta

Deal found 12/7

$465

Thu 3/56:50 pmSEA - BHD

1 stop13h 50mBritish Airways

Deal found 12/7

$490

Sat 3/711:15 amSEA - BHD

2 stops21h 35mDelta

Deal found 12/7

$515

Fri 3/67:15 amSEA - BHD

2 stops19h 15mAmerican Airlines

Deal found 12/7

$593

Find flight deals from Washington to Northern Ireland

Round-trip from	$554 (Trip.com)
One-way from	$314 (Trip.com)
Popular in	December
Cheapest in	April
Average price	$1,583

From Washington to Northern Ireland

Search Deals

One-way flight from Washington to Northern Ireland

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($128 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($59 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Wed 3/4

2:35 pm-7:20 pm

2 stops20h 45m

Belfast Intl

Wed 3/11

7:20 am-6:00 pm

2 stops17h 40m

$554

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Tue 1/20

2:35 pm-8:15 pm

2 stops21h 40m

Belfast Intl

Tue 1/27

6:30 am-5:00 pm

2 stops18h 30m

$600

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 2/11

5:45 pm-4:35 pm

1 stop14h 50m

Belfast City

Sun 2/15

8:25 pm-3:55 pm

1 stop27h 30m

$623

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 1/30

6:50 pm-5:15 pm

1 stop14h 25m

Belfast City

Tue 2/3

3:05 pm-4:55 pm

1 stop33h 50m

$624

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Thu 1/8

7:00 am-10:20 am

2 stops19h 20m

Belfast City

Mon 1/19

9:15 am-8:28 pm

2 stops19h 13m

$637

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Tue 3/17

5:40 pm-6:40 pm

2 stops18h 00m

Belfast City

Tue 3/31

9:35 am-8:49 pm

2 stops19h 14m

$686

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Wed 1/21

2:35 pm-7:35 pm

2 stops21h 00m

Belfast Intl

Wed 1/28

6:30 am-5:00 pm

2 stops18h 30m

$696

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Tue 3/17

7:05 am-4:50 pm

2 stops26h 45m

Belfast City

Tue 3/31

5:30 pm-11:10 am

1 stop25h 40m

$698

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 5/1

5:54 am-3:30 pm

2 stops25h 36m

Belfast City

Fri 5/15

11:55 am-5:40 pm

1 stop13h 45m

$709

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/4

1:23 pm-2:15 pm

2 stops16h 52m

Belfast City

Wed 3/11

9:15 am-5:55 pm

1 stop15h 40m

$760

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 34 results

Best time to book a flight from Washington to Northern Ireland

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

Estimated round-trip 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 Washington to Northern Ireland

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

Unlike in the afternoon, when flights are generally more expensive, you can save up to 20% on flights from State of Washington to Northern Ireland by exploring options for tickets in the evening.

Reviews of airlines servicing Northern Ireland

See what other customers who have flown with British Airways from Washington to Northern Ireland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

British Airways

6.7

Okay

7,571 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

British Airways

6.7

Okay

7,571 reviews

British Airways

6.7

Okay

7,571 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

Related info for your journey

How long is the flight from State of Washington to Northern Ireland?
British Airways can get you from State of Washington to Northern Ireland in just under 14h 50m. Your travel time can differ by up to . There are 4585 mi between State of Washington and Northern Ireland.
Can I find deals for flights from Washington to Northern Ireland that include hotel bookings?
Yes. In addition to deals on Washington to Northern Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington to Northern Ireland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Northern Ireland.
Can I find deals for business class flights from Washington to Northern Ireland?
Yes. Cheapflights offers flight deals from Washington to Northern Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Washington to Northern Ireland

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$737	Average$866	FlexibilityNo cancel fee	On-time70%

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$314+ Cheap flights from Washington to Northern Ireland

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington to Northern Ireland with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Washington to Northern Ireland

Cheapest flights from Washington to Northern IrelandExplore the most affordable flight options available from Washington to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.

Explore the most affordable flight options available from Washington to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.

Find flight deals from Washington to Northern Ireland

Keep the following information in mind while searching for Washington to Northern Ireland flight deals. Data was last updated December 8, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Best time to book a flight from Washington to Northern Ireland

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

Cheapflights Insights

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

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

Find hourly flight availability from Washington to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 8, 2025.

Reviews of airlines servicing Northern Ireland

See what other customers who have flown with British Airways from Washington to Northern Ireland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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 Washington to Northern Ireland

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

Top airline flying from Washington to Northern Ireland

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Travel Smart

Cheapest flights from Washington to Northern Ireland
Explore the most affordable flight options available from Washington to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.