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Northern Ireland

$626+ Cheap flights from Washington to Northern Ireland

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BFS
dic. 3 — dic. 101
mié. 12/3
mié. 12/10
1 adult, Economy
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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 noviembre 3, 2025.

This Ovago deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/91:25 pmSEA - BHD
1 stop13h 05mBritish Airways
dom. 1/113:10 pmBHD - SEA
1 stop33h 45mBritish Airways
Deal found 11/2$631
This KLM deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/31:25 pmPDX - BHD
1 stop23h 35mKLM
mié. 12/106:30 amBHD - PDX
1 stop12h 55mKLM
Deal found 11/2$633
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/311:35 amPDX - BHD
2 stops25h 25mDelta
mié. 12/106:30 amBHD - PDX
1 stop12h 55mDelta
Deal found 11/2$637
This Virgin Atlantic deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/37:20 amSEA - BHD
2 stops29h 40mVirgin Atlantic
dom. 12/75:20 pmBHD - SEA
1 stop26h 30mVirgin Atlantic
Deal found 10/31$638
This Air France deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/293:00 pmSEA - BHD
1 stop17h 50mMultiple Airlines
sáb. 12/66:30 amBHD - SEA
2 stops17h 51mMultiple Airlines
Deal found 11/1$643
This Trip.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/296:50 pmSEA - BHD
1 stop29h 35mBritish Airways
sáb. 12/66:35 amBHD - SEA
1 stop12h 55mBritish Airways
Deal found 11/1$663
This KLM deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/33:05 pmSEA - BHD
1 stop21h 55mKLM
dom. 12/75:20 pmBHD - SEA
1 stop26h 30mKLM
Deal found 11/2$685
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/311:30 amSEA - BHD
2 stops25h 30mDelta
dom. 12/75:20 pmBHD - SEA
1 stop26h 30mDelta
Deal found 11/1$722
This British Airways deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/36:50 pmSEA - BHD
1 stop28h 40mBritish Airways
dom. 12/78:25 pmBHD - SEA
1 stop28h 30mBritish Airways
Deal found 10/31$723
This Mytrip deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/169:50 amPDX - BFS
3 stops26h 30mMultiple Airlines
mié. 11/197:55 amBFS - PDX
2 stops17h 05mMultiple Airlines
Deal found 11/2$1,342

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 noviembre 3, 2025.

Round-trip from

$626
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$807
From Washington to Northern Ireland
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Northern Ireland 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, Cheapflights users made 2,558,603 searches. Data last updated noviembre 3, 2025.
Use the filters below to find and compare flights from Washington to Northern Ireland that are best for you.

Fly from

Washington

Fly to

Northern Ireland

Route

Depart

Return

Price

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

mié. 4/15

3:45 pm-3:15 pm

2 stops15h 30m

Belfast Intl

jue. 4/30

8:10 am-5:50 pm

2 stops17h 40m

$626

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

mar. 12/9

1:25 pm-10:30 am

1 stop13h 05m

Belfast City

dom. 1/11

3:10 pm-4:55 pm

1 stop33h 45m

$631

PortlandBelfast

PDX - BHD

PDXBHD

Portland

mié. 12/3

1:25 pm-9:00 pm

1 stop23h 35m

Belfast City

mié. 12/10

6:30 am-11:25 am

1 stop12h 55m

$633

PortlandBelfast

PDX - BHD

PDXBHD

Portland

mié. 12/3

11:35 am-9:00 pm

2 stops25h 25m

Belfast City

mié. 12/10

6:30 am-11:25 am

1 stop12h 55m

$637

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

mié. 12/3

7:20 am-9:00 pm

2 stops29h 40m

Belfast City

dom. 12/7

5:20 pm-11:50 am

1 stop26h 30m

$638

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

mié. 12/3

3:05 pm-9:00 pm

1 stop21h 55m

Belfast City

dom. 12/7

5:20 pm-11:50 am

1 stop26h 30m

$685

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

mié. 4/15

3:45 pm-8:50 pm

2 stops21h 05m

Belfast City

jue. 4/30

7:00 am-8:45 pm

2 stops21h 45m

$705

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

mié. 4/15

1:35 pm-1:30 pm

1 stop15h 55m

Belfast City

jue. 4/30

6:35 am-6:25 pm

1 stop19h 50m

$720

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

mié. 12/3

11:30 am-9:00 pm

2 stops25h 30m

Belfast City

dom. 12/7

5:20 pm-11:50 am

1 stop26h 30m

$722

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

mié. 12/3

6:50 pm-7:30 am

1 stop28h 40m

Belfast City

dom. 12/7

8:25 pm-4:55 pm

1 stop28h 30m

$723

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 20 results
1
2

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?

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 noviembre 3, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 34% on flights from State of Washington to Northern Ireland by exploring options for tickets in the evening.

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Northern Ireland. Reviews last updated noviembre 3, 2025.
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
7,494 reviews

Entertainment

6.4

Food

6.3

Crew

7.6

Overall

6.7

Boarding

6.9

Comfort

6.7

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
7,494 reviews
British Airways
6.7
Okay
7,494 reviews

Entertainment

6.4

Food

6.3

Crew

7.6

Overall

6.7

Boarding

6.9

Comfort

6.7

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

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?

    British Airways, KLM, and Delta can get you from State of Washington to Northern Ireland in just under 13h 05m. Your travel time can differ by up to 12h 20m. There are 4472 mi between State of Washington and Northern Ireland. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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

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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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Top airline flying from Washington to Northern Ireland

Discover the top airline that operate flights from Washington to Northern Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$737Average$951FlexibilityNo cancel feeOn-time70%

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