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

There are many flights that can get you from State of Washington to Northern Ireland in 15h 10m. Fly via British Airways, Finnair, or KLM to get the fastest option. Airlines will cover a distance of 4472 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

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 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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

When flying from State of Washington to Northern Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 holiday 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.

£255+ Flights from Washington to Northern Ireland

Find flight deals from Washington to Northern Ireland

Enter your travel dates to find the best prices.

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 17 10月 2025.

週四 4/1218:50SEA - BHD

1 stop15h 10mBritish Airways

週四 11/1220:00BHD - SEA

1 stop28h 55mBritish Airways

Deal found 17/10£495

週三 3/1208:30SEA - BHD

2 stops21h 45mFinnair

週五 12/1211:30BHD - SEA

1 stop13h 25mFinnair

Deal found 17/10£499

週三 3/1218:50SEA - BHD

1 stop28h 40mBritish Airways

週日 7/1217:35BHD - SEA

1 stop31h 20mBritish Airways

Deal found 16/10£501

週三 3/1218:50SEA - BHD

1 stop28h 40mBritish Airways

週五 12/1206:45BHD - SEA

1 stop18h 10mBritish Airways

Deal found 17/10£502

週五 14/1113:26PDX - BHD

2 stops16h 49mMultiple Airlines

週五 21/1111:30BHD - PDX

2 stops19h 29mMultiple Airlines

Deal found 15/10£506

週四 4/1213:54SEA - BHD

2 stops18h 46mBritish Airways

週五 12/1206:45BHD - SEA

1 stop12h 45mBritish Airways

Deal found 17/10£509

週五 14/1113:25PDX - BHD

1 stop19h 25mKLM

週五 21/1106:30BHD - PDX

1 stop12h 55mKLM

Deal found 15/10£509

週三 3/1207:20SEA - BHD

2 stops29h 40mVirgin Atlantic

週日 7/1217:20BHD - SEA

1 stop26h 30mVirgin Atlantic

Deal found 16/10£512

週三 3/1221:59SEA - BHD

2 stops34h 51mDelta

週日 7/1206:30BHD - SEA

1 stop13h 20mDelta

Deal found 14/10£513

週三 3/1207:10SEA - BHD

2 stops29h 50mDelta

週四 11/1217:20BHD - SEA

2 stops29h 39mDelta

Deal found 17/10£520

週三 3/1207:10SEA - BHD

2 stops29h 50mDelta

週五 12/1217:20BHD - SEA

2 stops48h 05mDelta

Deal found 17/10£524

週四 20/1114:35SEA - BFS

2 stops23h 45mMultiple Airlines

週四 27/1106:30BFS - SEA

2 stops18h 30mMultiple Airlines

Deal found 16/10£539

Best flights from Washington to Northern Ireland
Discover carefully curated flight deals from Washington to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 10月 2025.

週四 4/1218:50SEA - BHD

1 stop15h 10mBritish Airways

週五 12/1206:45BHD - SEA

1 stop12h 45mBritish Airways

Deal found 17/10£495

週三 3/1208:30SEA - BHD

2 stops21h 45mFinnair

週五 12/1211:30BHD - SEA

1 stop13h 25mFinnair

Deal found 17/10£499

週五 14/1113:26PDX - BHD

2 stops16h 49mMultiple Airlines

週五 21/1111:30BHD - PDX

2 stops19h 29mMultiple Airlines

Deal found 15/10£506

週五 14/1113:25PDX - BHD

1 stop19h 25mKLM

週五 21/1106:30BHD - PDX

1 stop12h 55mKLM

Deal found 15/10£509

週三 3/1211:30SEA - BHD

2 stops25h 30mVirgin Atlantic

週日 7/1217:20BHD - SEA

1 stop26h 30mVirgin Atlantic

Deal found 15/10£512

週三 3/1221:59SEA - BHD

2 stops34h 51mDelta

週日 7/1206:30BHD - SEA

1 stop13h 20mDelta

Deal found 14/10£513

週三 3/1218:50SEA - BHD

1 stop28h 40mBritish Airways

週日 7/1217:35BHD - SEA

1 stop31h 20mBritish Airways

Deal found 15/10£501

週四 20/1114:35SEA - BFS

2 stops23h 45mMultiple Airlines

週四 27/1106:30BFS - SEA

2 stops18h 30mMultiple Airlines

Deal found 16/10£539

週三 3/1218:50SEA - BHD

1 stop28h 40mBritish Airways

週四 11/1217:45BHD - SEA

1 stop25h 45mBritish Airways

Deal found 17/10£502

週日 1/311:10PDX - BHD

2 stops21h 40mVirgin Atlantic

週四 5/317:20BHD - PDX

1 stop26h 05mVirgin Atlantic

Deal found 14/10£602

週四 4/1213:54SEA - BHD

2 stops18h 46mBritish Airways

週四 11/1211:05BHD - SEA

1 stop13h 50mBritish Airways

Deal found 17/10£509

週五 3/413:25PDX - BHD

2 stops23h 55mDelta

週二 7/406:30BHD - PDX

1 stop12h 50mDelta

Deal found 15/10£636

週五 3/419:25PDX - BHD

1 stop14h 50mBritish Airways

週二 7/416:25BHD - PDX

1 stop33h 10mBritish Airways

Deal found 16/10£553

週日 30/1115:10SEA - BFS

3 stops21h 20mMultiple Airlines

週日 7/1207:55BFS - SEA

3 stops41h 05mMultiple Airlines

Deal found 16/10£742

週日 1/317:45PDX - BHD

1 stop15h 05mBritish Airways

週四 5/315:05BHD - PDX

1 stop32h 50mBritish Airways

Deal found 14/10£584

週六 29/1114:00SEA - BFS

2 stops16h 40mMultiple Airlines

週六 6/1211:05BFS - SEA

3 stops34h 15mMultiple Airlines

Deal found 15/10£750

週三 15/419:00SEA - BFS

2 stops16h 10mMultiple Airlines

週六 18/406:20BFS - SEA

2 stops22h 25mMultiple Airlines

Deal found 15/10£987

Last-minute flights from Washington to Northern Ireland
Discover last-minute flight deals from Washington to Northern Ireland. Data last updated 17 10月 2025 and is based on user searches.

週三 22/1019:25PDX - BHD

1 stop17h 20mMultiple Airlines

週日 26/1012:10BHD - PDX

2 stops29h 46mMultiple Airlines

Deal found 16/10£801

週三 22/1013:15PDX - BHD

1 stop19h 40mDelta

週日 26/1006:30BHD - PDX

1 stop12h 55mDelta

Deal found 16/10£981

週三 29/1021:05SEA - BHD

2 stops27h 25mBritish Airways

週三 5/1106:35BHD - SEA

2 stops19h 45mBritish Airways

Deal found 16/10£768

週五 14/1113:26PDX - BHD

2 stops16h 49mMultiple Airlines

週五 21/1111:30BHD - PDX

2 stops19h 29mMultiple Airlines

Deal found 15/10£506

週五 14/1113:25PDX - BHD

1 stop19h 25mKLM

週五 21/1106:30BHD - PDX

1 stop12h 55mKLM

Deal found 15/10£509

週四 20/1114:35SEA - BFS

2 stops23h 45mMultiple Airlines

週四 27/1106:30BFS - SEA

2 stops18h 30mMultiple Airlines

Deal found 16/10£539

週四 20/1114:35SEA - BHD

2 stops21h 00mMultiple Airlines

週四 27/1107:25BHD - SEA

2 stops17h 35mMultiple Airlines

Deal found 16/10£581

週四 20/1115:00SEA - BHD

1 stop17h 50mDelta

週四 27/1106:30BHD - SEA

1 stop13h 15mDelta

Deal found 16/10£631

週四 20/1115:00SEA - BHD

1 stop17h 50mKLM

週四 27/1106:30BHD - SEA

2 stops17h 24mKLM

Deal found 16/10£666

週六 29/1114:00SEA - BFS

2 stops16h 40mMultiple Airlines

週六 6/1211:05BFS - SEA

3 stops34h 15mMultiple Airlines

Deal found 15/10£750

週日 30/1114:35SEA - BFS

2 stops20h 20mMultiple Airlines

週日 7/1207:30BFS - SEA

2 stops17h 30mMultiple Airlines

Deal found 16/10£597

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 17 10月 2025.

週五 26/1223:10SEA - BFS

3 stops48h 15mMultiple Airlines

Deal found 17/10£255

週五 26/1223:10SEA - BHD

3 stops50h 15mMultiple Airlines

Deal found 17/10£281

週五 26/1220:05SEA - BHD

2 stops16h 45mAer Lingus

Deal found 17/10£446

週五 26/1215:05SEA - BHD

1 stop21h 55mVirgin Atlantic

Deal found 17/10£513

週五 26/1218:50SEA - BHD

1 stop16h 25mAmerican Airlines

Deal found 16/10£689

Cheap flight deals from Washington to Northern Ireland

Round-trip from	£495
One-way from	£255
Popular in	December
Cheapest in	March
Average price	£578

British Airways
4/12-11/12
2 total stops
44h 05m total
Washington to Northern Ireland

Search Deals

26/12
3 total stops
48h 15m total
Washington to Northern Ireland

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£52 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 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 - BHD

SEABHD

Seattle/Tacoma Intl

週四 4/12

18:50-18:00

1 stop15h 10m

Belfast City

週五 12/12

06:45-11:30

1 stop12h 45m

£495

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

週三 3/12

08:30-14:15

2 stops21h 45m

Belfast City

週五 12/12

11:30-16:55

1 stop13h 25m

£499

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

週三 3/12

18:50-07:30

1 stop28h 40m

Belfast City

週日 7/12

17:35-16:55

1 stop31h 20m

£501

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

週三 3/12

18:50-07:30

1 stop28h 40m

Belfast City

週四 11/12

17:45-11:30

1 stop25h 45m

£502

PortlandBelfast

PDX - BHD

PDXBHD

Portland

週五 14/11

13:26-14:15

2 stops16h 49m

Belfast City

週五 21/11

11:30-22:59

2 stops19h 29m

£506

PortlandBelfast

PDX - BHD

PDXBHD

Portland

週五 14/11

13:25-16:50

1 stop19h 25m

Belfast City

週五 21/11

06:30-11:25

1 stop12h 55m

£509

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

週四 4/12

13:54-16:40

2 stops18h 46m

Belfast City

週四 11/12

11:05-16:55

1 stop13h 50m

£509

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

週三 3/12

11:30-21:00

2 stops25h 30m

Belfast City

週日 7/12

17:20-11:50

1 stop26h 30m

£512

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

週三 3/12

21:59-16:50

2 stops34h 51m

Belfast City

週日 7/12

06:30-11:50

1 stop13h 20m

£513

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

週四 20/11

14:35-22:20

2 stops23h 45m

Belfast Intl

週四 27/11

06:30-17:00

2 stops18h 30m

£539

Flights are sorted by cheapest return flights first.

Deals found on 17/10

Showing 1-10 of 22 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 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 Washington to Northern Ireland

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

Related info for your journey

How long is the flight from State of Washington to Northern Ireland?
There are many flights that can get you from State of Washington to Northern Ireland in 15h 10m. Fly via British Airways, Finnair, or KLM to get the fastest option. Airlines will cover a distance of 4472 mi. Both multi-stop and direct flights can be found to your destination and back.
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 holiday 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

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Alternative routes for Washington to Northern Ireland

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Boston to Stansted flights

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O'Hare Intl to London City flights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington to Northern Ireland. 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 Washington to Northern Ireland?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Northern Ireland from Washington.

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

Certainly. Search results for flights to Northern Ireland from Washington shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Not ready to book yet? You can track prices for flights from Washington to Northern Ireland on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Washington to Northern Ireland from £255

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 26/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find 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 17 10月 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 17 10月 2025.

Cheap 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 17 10月 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

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.

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

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

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

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

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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 17 10月 2025.