Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from £270
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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Dulles Intl to Northern Ireland
Keep the following information in mind while searching for Dulles Intl to Northern Ireland flight deals. Data was last updated 29 April 2025.
Find flight deals from Dulles Intl to Northern Ireland
Cheapest flights from Dulles Intl to Northern IrelandExplore the most affordable flight options available from Dulles Intl to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.
Explore the most affordable flight options available from Dulles Intl to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Dulles Intl 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 29 April 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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
Sat 6/9
19:25-15:05
1 stop14h 40m
Belfast City
Sat 20/12
09:10-15:35
1 stop11h 25m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sat 6/9
14:09-15:05
2 stops19h 56m
Belfast City
Sat 20/12
18:00-15:58
2 stops26h 58m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Tue 10/6
15:30-16:40
2 stops20h 10m
Belfast Intl
Tue 17/6
05:55-21:04
3 stops20h 09m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Tue 16/9
20:30-20:45
2 stops19h 15m
Belfast City
Sat 20/9
19:00-22:10
2 stops32h 10m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sun 8/6
20:25-14:35
2 stops13h 10m
Belfast City
Sun 15/6
07:00-18:55
2 stops16h 55m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Wed 28/5
17:24-16:55
2 stops18h 31m
Belfast City
Wed 4/6
06:30-16:44
2 stops15h 14m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Thu 19/6
17:25-16:55
1 stop18h 30m
Belfast City
Tue 24/6
08:30-15:35
1 stop12h 05m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sat 9/8
22:35-09:05
2 stops29h 30m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Sat 9/8
17:00-07:45
2 stops33h 45m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sat 9/8
17:55-10:10
1 stop11h 15m
Best time to book a flight from Dulles Intl to Northern Ireland
Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Dulles Intl with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Northern Ireland
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Northern Ireland?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Northern Ireland (average of £67). Flying from Washington, D.C. Dulles Intl Airport 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 29 April 2025.
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl 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 Dulles Intl to Northern Ireland
See prices for flight routes from nearby airports that may be better suited for you.
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