What is the cheapest month to book a flight from State of Washington to Northern Ireland?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Northern Ireland (average of £67). Flying from State of Washington to Northern Ireland in July is currently the most expensive (average of £90). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest month to fly from State of Washington to Northern Ireland?

Our data shows that October tends to be the cheapest month to fly to Northern Ireland from State of Washington. Users have commonly found prices around £708 for the month, but tickets can be as low as £407. Due to multiple factors, prepare for potentially higher prices in June.

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.

£297+ Flights from Washington to Northern Ireland

Cheap flight deals from Washington to Northern Ireland

Round-trip from	£546
One-way from	£297
Popular in	June
Cheapest in	October
Average price	£585

British Airways
23/8-31/8
4 total stops
50h 45m total
Washington to Northern Ireland

Search Deals

American Airlines
23/8
2 total stops
17h 45m total
Washington to Northern Ireland

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (£116 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£29 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find 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 30 April 2025.

Tue 28/1014:35SEA - BHD

1 stop12h 55mAmerican Airlines

Tue 4/1106:35BHD - SEA

1 stop12h 45mAmerican Airlines

Deal found 30/4£511

Sat 23/823:59PDX - BHD

2 stops27h 31mBritish Airways

Sun 31/806:50BHD - PDX

2 stops23h 14mBritish Airways

Deal found 29/4£546

Tue 28/1019:50SEA - BHD

1 stop15h 50mBritish Airways

Tue 4/1106:35BHD - SEA

1 stop12h 45mBritish Airways

Deal found 29/4£569

Wed 11/607:05SEA - BFS

2 stops27h 30mMultiple Airlines

Wed 18/617:05BFS - SEA

3 stops37h 11mMultiple Airlines

Deal found 29/4£629

Sun 4/513:55SEA - BHD

1 stop23h 20mDelta

Mon 12/517:25BHD - SEA

1 stop26h 15mDelta

Deal found 29/4£661

Thu 1/514:10SEA - BHD

1 stop18h 45mKLM

Sun 11/506:30BHD - SEA

1 stop17h 27mKLM

Deal found 30/4£737

Tue 3/619:35SEA - BHD

2 stops15h 50mAer Lingus

Tue 10/607:00BHD - SEA

2 stops18h 50mAer Lingus

Deal found 28/4£753

Mon 16/610:00SEA - BHD

3 stops27h 10mMultiple Airlines

Thu 19/607:05BHD - SEA

3 stops39h 58mMultiple Airlines

Deal found 29/4£798

Fri 13/615:25PDX - BFS

3 stops20h 40mMultiple Airlines

Fri 20/616:40BFS - PDX

3 stops38h 16mMultiple Airlines

Deal found 29/4£989

Tue 24/613:45PDX - BHD

2 stops20h 50mKLM

Mon 7/706:30BHD - PDX

1 stop12h 50mKLM

Deal found 29/4£1,093

Tue 24/619:25PDX - BHD

1 stop14h 05mAmerican Airlines

Mon 7/709:50BHD - PDX

1 stop15h 45mAmerican Airlines

Deal found 29/4£1,555

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 30 April 2025.

Sat 23/823:59PDX - BHD

2 stops27h 31mBritish Airways

Sun 31/806:50BHD - PDX

2 stops23h 14mBritish Airways

Deal found 29/4£546

Wed 11/607:05SEA - BFS

2 stops27h 30mMultiple Airlines

Wed 18/617:05BFS - SEA

3 stops37h 11mMultiple Airlines

Deal found 29/4£629

Tue 3/619:35SEA - BHD

2 stops15h 50mAer Lingus

Tue 10/607:00BHD - SEA

2 stops18h 50mAer Lingus

Deal found 28/4£753

Tue 24/613:45PDX - BHD

2 stops20h 50mKLM

Mon 7/706:30BHD - PDX

1 stop12h 50mKLM

Deal found 29/4£1,093

Tue 24/619:25PDX - BHD

1 stop14h 05mAmerican Airlines

Mon 7/709:50BHD - PDX

1 stop15h 45mAmerican Airlines

Deal found 29/4£1,555

Mon 16/610:00SEA - BHD

3 stops27h 10mMultiple Airlines

Thu 19/607:05BHD - SEA

3 stops39h 58mMultiple Airlines

Deal found 29/4£798

Tue 3/620:20SEA - BHD

1 stop15h 05mBritish Airways

Tue 10/606:35BHD - SEA

1 stop12h 35mBritish Airways

Deal found 28/4£832

Fri 13/615:25PDX - BFS

3 stops20h 40mMultiple Airlines

Fri 20/616:40BFS - PDX

3 stops38h 16mMultiple Airlines

Deal found 29/4£989

Sun 29/613:55SEA - BHD

1 stop19h 00mKLM

Thu 10/717:25BHD - SEA

1 stop26h 10mKLM

Deal found 29/4£2,800

Last-minute flights from Washington to Northern Ireland
Discover last-minute flight deals from Washington to Northern Ireland. Data last updated 30 April 2025 and is based on user searches.

Tue 29/411:55PDX - BHD

2 stops21h 00mKLM

Tue 6/517:25BHD - PDX

1 stop25h 55mKLM

Deal found 29/4£5,771

Tue 29/419:25PDX - BHD

1 stop14h 05mBritish Airways

Tue 6/509:35BHD - PDX

1 stop16h 00mBritish Airways

Deal found 29/4£6,567

Thu 1/514:10SEA - BHD

1 stop18h 45mKLM

Sun 11/506:30BHD - SEA

1 stop17h 27mKLM

Deal found 30/4£737

Fri 2/520:20SEA - BHD

1 stop16h 25mBritish Airways

Mon 12/518:30BHD - SEA

1 stop24h 40mBritish Airways

Deal found 30/4£635

Fri 2/520:20SEA - BHD

1 stop16h 25mAmerican Airlines

Sun 11/506:50BHD - SEA

1 stop12h 40mAmerican Airlines

Deal found 29/4£679

Sun 4/513:55SEA - BHD

1 stop23h 20mDelta

Mon 12/517:25BHD - SEA

1 stop26h 15mDelta

Deal found 29/4£661

Wed 28/500:24SEA - BHD

2 stops31h 06mMultiple Airlines

Thu 5/612:40BHD - SEA

2 stops19h 37mMultiple Airlines

Deal found 29/4£1,060

Thu 29/519:35SEA - BHD

2 stops29h 15mAer Lingus

Thu 5/619:25BHD - SEA

2 stops30h 25mAer Lingus

Deal found 29/4£796

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 30 April 2025.

Sat 23/813:20PDX - BHD

2 stops17h 45mAmerican Airlines

Deal found 29/4£297

Sat 23/823:59PDX - BHD

2 stops27h 31mBritish Airways

Deal found 28/4£324

Thu 28/817:05SEA - BHD

2 stops43h 40mMultiple Airlines

Deal found 29/4£722

Thu 28/820:20SEA - BHD

1 stop14h 25mBritish Airways

Deal found 29/4£965

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

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 23/8

23:59-11:30

2 stops27h 31m

Belfast City

Sun 31/8

06:50-22:04

2 stops23h 14m

£546

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Wed 11/6

07:05-18:35

2 stops27h 30m

Belfast Intl

Wed 18/6

17:05-22:16

3 stops37h 11m

£629

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 3/6

19:35-19:25

2 stops15h 50m

Belfast City

Tue 10/6

07:00-17:50

2 stops18h 50m

£753

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 16/6

10:00-21:10

3 stops27h 10m

Belfast City

Thu 19/6

07:05-15:03

3 stops39h 58m

£798

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 3/6

20:20-19:25

1 stop15h 05m

Belfast City

Tue 10/6

06:35-11:10

1 stop12h 35m

£832

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Fri 13/6

15:25-20:05

3 stops20h 40m

Belfast Intl

Fri 20/6

16:40-22:56

3 stops38h 16m

£989

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Tue 24/6

13:45-18:35

2 stops20h 50m

Belfast City

Mon 7/7

06:30-11:20

1 stop12h 50m

£1,093

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Tue 24/6

19:25-17:30

1 stop14h 05m

Belfast City

Mon 7/7

09:50-17:35

1 stop15h 45m

£1,555

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sun 29/6

13:55-16:55

1 stop19h 00m

Belfast City

Thu 10/7

17:25-11:35

1 stop26h 10m

£2,800

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 23/8

13:20-15:05

2 stops17h 45m

£297

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 13 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

Rainfall in Northern Ireland by month

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.

Temperature in Northern Ireland by month

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).

Reviews of airlines servicing Northern Ireland

Read reviews from past customers who have flown KLM, American Airlines and Aer Lingus from Washington to Northern Ireland. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,334 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

KLM

7.8

Good

1,334 reviews

KLM

7.8

Good

1,334 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

LBA - AMS

American Airlines

7.2

Good

10,000 reviews

KLM

7.8

Good

1,334 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

LBA - AMS

Aer Lingus

7.0

Good

1,076 reviews

KLM

7.8

Good

1,334 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

LBA - AMS

British Airways

6.6

Okay

6,837 reviews

KLM

7.8

Good

1,334 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

LBA - AMS

Related info for your journey

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.
What is the cheapest month to book a flight from State of Washington to Northern Ireland?
Currently, January is the cheapest month in which you can book a flight from State of Washington to Northern Ireland (average of £67). Flying from State of Washington to Northern Ireland in July is currently the most expensive (average of £90). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Washington to Northern Ireland

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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 £297

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 23/8. Fares are subject to change and may not be available on all flights or dates of travel.

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 30 April 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 30 April 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 30 April 2025.

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

Rainfall in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average rainfall totals by month.

Temperature in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average temperature totals by month.

Reviews of airlines servicing Northern Ireland

Read reviews from past customers who have flown KLM, American Airlines and Aer Lingus from Washington to Northern Ireland. 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.

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?

What is the cheapest month to book a flight from State of 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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

100% Free

Book with Flexibility

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 30 April 2025.