Cheap flights from Northern Ireland to Washington from £336
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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
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 22 April 2025.
Find flight deals from Northern Ireland to Washington
Cheapest flights from Northern Ireland to WashingtonExplore 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 22 April 2025.
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 22 April 2025.
Cheapflights Fare Finder
Customise 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 858,174 searches. Data last updated 22 April 2025.
Use the filters below to find and compare flights from Northern Ireland to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
Thu 8/5
12:40-18:20
1 stop13h 40m
Seattle/Tacoma Intl
Thu 22/5
13:30-13:15
1 stop15h 45m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
Thu 8/5
16:20-11:35
1 stop27h 15m
Seattle/Tacoma Intl
Thu 22/5
13:30-11:10
1 stop13h 40m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
Fri 16/5
06:30-11:40
1 stop13h 10m
Seattle/Tacoma Intl
Fri 30/5
13:55-21:15
1 stop23h 20m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
Thu 8/5
06:30-17:50
2 stops19h 20m
Seattle/Tacoma Intl
Thu 29/5
11:40-16:55
2 stops21h 15m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
Fri 16/5
07:00-00:10
3 stops25h 10m
Seattle/Tacoma Intl
Fri 30/5
08:25-20:10
2 stops27h 45m
BelfastSeattle
BFS - SEA
BFSSEA
Belfast Intl
Thu 5/6
21:10-00:10
3 stops35h 00m
Seattle/Tacoma Intl
Thu 12/6
15:45-23:20
3 stops23h 35m
BelfastSeattle
BFS - SEA
BFSSEA
Belfast Intl
Sun 10/8
23:30-12:58
3 stops45h 28m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
Mon 8/9
09:50-17:50
2 stops16h 00m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
Sun 10/8
07:30-10:30
3 stops35h 00m
BelfastSeattle
BHD - SEA
BHDSEA
Belfast City
Sun 10/8
15:50-11:35
1 stop27h 45m
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.
Cheapflights Insights
Everything you need to know about your flight from Northern Ireland to Washington
What is the cheapest time of day to fly from NIR to WA?
Find hourly flight availability from Northern Ireland to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 April 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to State of Washington as you normally would.
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 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit State of Washington when rainfall is around 18.0 mm.
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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).
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 22 April 2025.
Food
Crew
Entertainment
Comfort
Overall
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Crew
Entertainment
Comfort
Overall
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Crew
Entertainment
Comfort
Overall
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Crew
Entertainment
Comfort
Overall
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Crew
Entertainment
Comfort
Overall
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Crew
Entertainment
Comfort
Overall
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
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.
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Alternative routes for Northern Ireland to Washington
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Northern Ireland to Washington
Discover the top airline that operate flights from Northern Ireland to Washington. 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 858,174 searches. Data last updated 22 April 2025.
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How does Cheapflights help users find flights from Northern Ireland to Washington?
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Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Washington?
Millions of users choose and trust Cheapflights to book the best flight deals from Northern Ireland to Washington for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Northern Ireland to Washington with no change fees?
Yes, we can. To see specific flights from Northern Ireland to Washington with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Northern Ireland to Washington become cheaper?
Of course! You can now track prices for flights from Northern Ireland to Washington and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.