Cheap flights from Washington, D.C. to Northern Ireland from £377
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 22/5. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Washington, D.C. to Northern Ireland
Keep the following information in mind while searching for Washington, D.C. to Northern Ireland flight deals. Data was last updated 30 April 2025.
Find flight deals from Washington, D.C. to Northern Ireland
Cheapest flights from Washington, D.C. to Northern IrelandExplore the most affordable flight options available from Washington, D.C. 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, D.C. to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Washington, D.C. 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 858,174 searches. Data last updated 30 April 2025.
Use the filters below to find and compare flights from Washington, D.C. to Northern Ireland that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sun 6/7
19:25-13:05
1 stop12h 40m
Belfast City
Sun 24/8
11:00-17:30
1 stop11h 30m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sat 6/9
20:19-17:15
2 stops15h 56m
Belfast City
Sat 20/12
18:00-15:58
2 stops26h 58m
BaltimoreBelfast
BWI - BHD
BWIBHD
Baltimore/Washington
Sat 6/9
20:21-17:15
2 stops15h 54m
Belfast City
Sat 20/12
11:15-00:31
2 stops18h 16m
Washington, D.C.Belfast
DCA - BHD
DCABHD
Washington, D.C. Reagan-National
Sat 6/9
17:00-12:15
2 stops14h 15m
Belfast City
Sat 20/12
06:30-19:11
2 stops17h 41m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Tue 10/6
08:22-16:40
2 stops27h 18m
Belfast Intl
Tue 17/6
05:55-21:04
3 stops20h 09m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sun 6/7
20:30-16:55
2 stops15h 25m
Belfast City
Sun 24/8
06:30-15:35
1 stop14h 05m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sun 6/7
12:13-21:15
2 stops28h 02m
Belfast City
Sun 24/8
17:25-19:37
2 stops31h 12m
Washington, D.C.Belfast
DCA - BFS
DCABFS
Washington, D.C. Reagan-National
Tue 10/6
09:40-16:40
3 stops26h 00m
Belfast Intl
Tue 17/6
08:20-21:53
3 stops18h 33m
BaltimoreBelfast
BWI - BFS
BWIBFS
Baltimore/Washington
Thu 29/5
18:50-23:25
2 stops23h 35m
Belfast Intl
Thu 5/6
06:35-17:40
2 stops16h 05m
BaltimoreBelfast
BWI - BHD
BWIBHD
Baltimore/Washington
Sat 5/7
19:40-21:15
2 stops20h 35m
Belfast City
Sun 24/8
06:30-08:04
2 stops30h 34m
Best time to book a flight from Washington, D.C. to Northern Ireland
Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Washington, D.C. with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. to Northern Ireland
What is the cheapest month to book a flight from Washington, D.C. to Northern Ireland?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Northern Ireland (average of £67). Flying from Washington, D.C. 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.
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 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
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 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
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 30 April 2025.
To help decide which airline to fly from Washington, D.C. to Northern Ireland, see what other customers have to say about Delta, KLM and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Comfort
Overall
Boarding
Crew
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Comfort
Overall
Boarding
Crew
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Comfort
Overall
Boarding
Crew
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Comfort
Overall
Boarding
Crew
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Comfort
Overall
Boarding
Crew
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Comfort
Overall
Boarding
Crew
Food
Reviews
Aaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from Washington, D.C. to Northern Ireland. 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 Washington, D.C. to Northern Ireland
See prices for flight routes from nearby airports that may be better suited for you.
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How does Cheapflights help users find flights from Washington, D.C. to Northern Ireland?
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Can Cheapflights find flights from Washington, D.C. to Northern Ireland with no change fees?
Yes, we can. To see specific flights from Washington, D.C. to Northern Ireland with no change fees, users can toggle flexible booking options after using the search form above to find flights.
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