Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from £464
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/9. 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 13 June 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 13 June 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 13 June 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 13 June 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
17:50-10:10
1 stop11h 20m
Belfast City
Sat 20/12
06:30-15:35
1 stop14h 05m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Fri 5/9
17:50-08:50
1 stop10h 00m
Belfast City
Mon 8/9
19:30-15:00
2 stops24h 30m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Mon 4/8
20:31-16:55
2 stops15h 24m
Belfast City
Wed 20/8
17:25-12:02
2 stops23h 37m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Fri 5/9
20:23-16:55
2 stops15h 32m
Belfast City
Mon 8/9
06:30-19:43
2 stops18h 13m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Wed 23/7
23:15-22:15
2 stops18h 00m
Belfast Intl
Sun 27/7
06:45-21:04
3 stops43h 19m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Tue 28/10
22:00-16:25
2 stops14h 25m
Belfast City
Sat 1/11
18:00-16:35
2 stops26h 35m
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 13 June 2025.
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
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
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