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Northern Ireland

$264+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BFS
Mar 19 — Mar 261
Wed 3/19
Wed 3/26
1 adult, Economy
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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 March 14, 2025.

Round-trip from

$669
(oojo)

Popular in

June

Cheapest in

October

Average price

$764
From Washington to Northern Ireland
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($200 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 14, 2025.

This Mytrip deal was found by Cheapflights users on 3/13. 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.
Sun 4/273:45 pmSEA - BFS
2 stops22h 35mMultiple Airlines
Sun 5/47:00 amBFS - SEA
3 stops21h 28mMultiple Airlines
Deal found 3/13$688
This oojo deal was found by Cheapflights users on 3/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/77:25 pmPDX - BHD
1 stop12h 15mBritish Airways
Sun 4/138:05 pmBHD - PDX
2 stops34h 57mBritish Airways
Deal found 3/13$691
This American Airlines deal was found by Cheapflights users on 3/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/72:58 pmPDX - BHD
2 stops18h 32mAmerican Airlines
Sun 4/1311:00 amBHD - PDX
2 stops20h 02mAmerican Airlines
Deal found 3/13$695
This Finnair deal was found by Cheapflights users on 3/14. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:50 pmSEA - BHD
1 stop15h 50mMultiple Airlines
Tue 11/46:35 amBHD - SEA
1 stop12h 45mMultiple Airlines
Deal found 3/14$698
This oojo deal was found by Cheapflights users on 3/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/221:30 pmSEA - BHD
1 stop13h 05mBritish Airways
Tue 4/296:35 amBHD - SEA
1 stop12h 35mBritish Airways
Deal found 3/13$701
This Air France deal was found by Cheapflights users on 3/13. 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.
Sun 4/276:10 pmSEA - BHD
1 stop19h 05mKLM
Sun 5/46:30 amBHD - SEA
2 stops17h 37mKLM
Deal found 3/13$798
This American Airlines deal was found by Cheapflights users on 3/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/28:20 pmSEA - BHD
1 stop13h 55mAmerican Airlines
Sun 5/116:50 amBHD - SEA
2 stops17h 10mAmerican Airlines
Deal found 3/13$811
This Delta deal was found by Cheapflights users on 3/13. 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.
Fri 4/251:55 pmPDX - BHD
2 stops23h 20mDelta
Sun 5/46:30 amBHD - PDX
2 stops19h 01mDelta
Deal found 3/13$879
This FlightHub deal was found by Cheapflights users on 3/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:45 pmSEA - BHD
2 stops17h 10mAer Lingus
Mon 5/126:50 pmBHD - SEA
2 stops30h 09mAer Lingus
Deal found 3/13$935
This Delta deal was found by Cheapflights users on 3/13. 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.
Sun 4/271:30 pmSEA - BHD
2 stops19h 25mDelta
Sun 5/46:30 amBHD - SEA
2 stops18h 30mDelta
Deal found 3/13$1,063
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/227:25 pmPDX - BHD
1 stop15h 20mMultiple Airlines
Fri 6/277:00 amBHD - PDX
2 stops37h 14mMultiple Airlines
Deal found 3/12$1,729
This KLM deal was found by Cheapflights users on 3/12. 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.
Sun 6/2212:55 pmPDX - BHD
1 stop24h 20mKLM
Fri 6/276:30 amBHD - PDX
1 stop12h 50mKLM
Deal found 3/12$2,268

Find flights from Washington to Northern Ireland within your budget

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 March 14, 2025.

Fly from

Washington

Fly to

Northern Ireland

Route

Depart

Return

Price

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Sun 4/27

3:45 pm-10:20 pm

2 stops22h 35m

Belfast Intl

Sun 5/4

7:00 am-8:28 pm

3 stops21h 28m

$688

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Mon 4/7

7:25 pm-3:40 pm

1 stop12h 15m

Belfast City

Sun 4/13

8:05 pm-11:02 pm

2 stops34h 57m

$691

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Mon 4/7

2:58 pm-5:30 pm

2 stops18h 32m

Belfast City

Sun 4/13

11:00 am-11:02 pm

2 stops20h 02m

$695

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 4/22

1:30 pm-10:35 am

1 stop13h 05m

Belfast City

Tue 4/29

6:35 am-11:10 am

1 stop12h 35m

$701

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 5/2

7:00 pm-8:25 pm

2 stops17h 25m

Belfast City

Sun 5/11

7:05 am-8:40 pm

2 stops21h 35m

$737

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sun 4/27

6:10 pm-9:15 pm

1 stop19h 05m

Belfast City

Sun 5/4

6:30 am-4:07 pm

2 stops17h 37m

$798

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 5/2

8:20 pm-6:15 pm

1 stop13h 55m

Belfast City

Sun 5/11

6:50 am-4:00 pm

2 stops17h 10m

$811

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 4/25

1:55 pm-9:15 pm

2 stops23h 20m

Belfast City

Sun 5/4

6:30 am-5:31 pm

2 stops19h 01m

$879

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 5/1

6:45 pm-7:55 pm

2 stops17h 10m

Belfast City

Mon 5/12

6:50 pm-4:59 pm

2 stops30h 09m

$935

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sun 4/27

1:30 pm-4:55 pm

2 stops19h 25m

Belfast City

Sun 5/4

6:30 am-5:00 pm

2 stops18h 30m

$1,063

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/13

Showing 1-10 of 16 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.

Travel insights for flights from Washington to Northern Ireland

Get recent, data-driven insights about flights from Washington to Northern Ireland including ideal travel times, pricing trends, and more.

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 March 14, 2025.

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

Rainfall in Northern Ireland by month

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

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.

Temperature in Northern Ireland by month

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

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 March 14, 2025.
Read through reviews of airlines operating flights from Washington to Northern Ireland, such as Delta, KLM and American Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,944 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
7,944 reviews
Delta
8.0
Very good
7,944 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,320 reviews
Delta
8.0
Very good
7,944 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,944 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aer Lingus
7.0
Good
1,063 reviews
Delta
8.0
Very good
7,944 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Iberia
7.0
Good
2,639 reviews
Delta
8.0
Very good
7,944 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    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.

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

    Currently, February is the cheapest month in which you can book a flight from State of Washington to Northern Ireland (average of $657). Flying from State of Washington to Northern Ireland in June is currently the most expensive (average of $1,189). 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

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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 March 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$544Average$866FlexibilityNo cancel feeOn-time70%
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