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$788+ Cheap flights from Northern Ireland to Washington

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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SEA
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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Cheap flight deals from Northern Ireland to Washington

Keep the following information in mind while searching for Northern Ireland to Washington flight deals. Data was last updated April 17, 2025.

Round-trip from

$788
(British Airways)

Popular in

July

Cheapest in

May

Average price

$690
From Northern Ireland to Washington
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($196 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Northern Ireland to Washington

Cheapest flights from Northern Ireland to Washington
Explore the most affordable flight options available from Northern Ireland to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

This British Airways deal was found by Cheapflights users on 4/16. 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.
Thu 5/812:40 pmBHD - SEA
1 stop13h 40mBritish Airways
Thu 5/221:30 pmSEA - BHD
1 stop15h 45mBritish Airways
Deal found 4/16$788
This American Airlines deal was found by Cheapflights users on 4/16. 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.
Thu 5/89:35 amBHD - SEA
1 stop16h 45mAmerican Airlines
Thu 5/221:30 pmSEA - BHD
1 stop13h 40mAmerican Airlines
Deal found 4/16$808
This Delta deal was found by Cheapflights users on 4/16. 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.
Thu 5/86:30 amBHD - SEA
2 stops18h 14mDelta
Thu 5/2911:40 amSEA - BHD
2 stops21h 15mDelta
Deal found 4/16$857
This KLM deal was found by Cheapflights users on 4/17. 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.
Fri 5/96:30 amBHD - SEA
1 stop13h 10mKLM
Fri 5/301:55 pmSEA - BHD
1 stop23h 20mKLM
Deal found 4/17$880
This American Airlines deal was found by Cheapflights users on 4/16. 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.
Thu 5/812:40 pmBHD - SEA
2 stops16h 59mMultiple Airlines
Thu 5/226:45 pmSEA - BHD
2 stops18h 00mMultiple Airlines
Deal found 4/16$1,060
This Mytrip deal was found by Cheapflights users on 4/16. 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.
Sat 5/316:00 amBFS - SEA
2 stops18h 00mMultiple Airlines
Sat 6/710:00 amSEA - BFS
3 stops28h 30mMultiple Airlines
Deal found 4/16$1,271

Cheapflights Fare Finder

Customize your flight search to find flights from Northern Ireland to Washington 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 April 17, 2025.
Use the filters below to find and compare flights from Northern Ireland to Washington that are best for you.

Fly from

Northern Ireland

Fly to

Washington

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/8

12:40 pm-6:20 pm

1 stop13h 40m

Seattle/Tacoma Intl

Thu 5/22

1:30 pm-1:15 pm

1 stop15h 45m

$788

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/8

9:35 am-6:20 pm

1 stop16h 45m

Seattle/Tacoma Intl

Thu 5/22

1:30 pm-11:10 am

1 stop13h 40m

$808

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/8

6:30 am-4:44 pm

2 stops18h 14m

Seattle/Tacoma Intl

Thu 5/29

11:40 am-4:55 pm

2 stops21h 15m

$857

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 5/9

6:30 am-11:40 am

1 stop13h 10m

Seattle/Tacoma Intl

Fri 5/30

1:55 pm-9:15 pm

1 stop23h 20m

$880

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/8

12:40 pm-9:39 pm

2 stops16h 59m

Seattle/Tacoma Intl

Thu 5/22

6:45 pm-8:45 pm

2 stops18h 00m

$1,060

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Sat 5/31

6:00 am-4:00 pm

2 stops18h 00m

Seattle/Tacoma Intl

Sat 6/7

10:00 am-10:30 pm

3 stops28h 30m

$1,271

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 7/30

3:20 pm-4:59 pm

2 stops33h 39m

$1,074

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 7/30

8:15 pm-11:35 am

1 stop23h 20m

$1,273

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Best time to book a flight from Northern Ireland to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Northern Ireland 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 Northern Ireland to Washington

Rainfall in Washington by month

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

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

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

If weather is an important factor for your trip to State of Washington, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated April 17, 2025.
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,327 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aer Lingus
7.0
Good
1,063 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.6
Okay
6,771 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Washington. 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 Northern Ireland to Washington that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Northern Ireland to Washington 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 Northern Ireland to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to State of Washington (average of $238). Flying from Northern Ireland to State of Washington in July is currently the most expensive (average of $411). 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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