Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from £421
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 17/6. 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 21 February 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 21 February 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 21 February 2025.
Find flights from Dulles Intl to Northern Ireland within your budget
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 21 February 2025.
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Sun 6/4
20:30-21:30
2 stops20h 00m
Belfast Intl
Sun 13/4
23:30-19:20
3 stops24h 50m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sat 15/3
22:55-14:15
1 stop11h 20m
Belfast City
Sat 22/3
06:40-20:15
2 stops17h 35m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Fri 11/4
20:25-15:30
2 stops14h 05m
Belfast City
Sun 27/4
06:50-15:50
2 stops14h 00m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Wed 9/4
13:35-21:15
2 stops26h 40m
Belfast City
Mon 21/4
17:25-16:34
2 stops28h 09m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sat 12/4
17:50-15:05
1 stop16h 15m
Belfast City
Sat 19/4
16:15-20:15
1 stop33h 00m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Mon 10/3
18:35-16:50
1 stop18h 15m
Belfast City
Sat 15/3
06:30-16:45
1 stop14h 15m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Mon 10/3
19:59-16:50
2 stops16h 51m
Belfast City
Sat 15/3
06:30-16:45
1 stop14h 15m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Sat 12/4
20:14-17:15
2 stops16h 01m
Belfast City
Sat 19/4
07:05-20:15
1 stop18h 10m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Fri 11/4
17:25-21:15
1 stop22h 50m
Belfast City
Sun 27/4
06:30-15:35
1 stop14h 05m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Tue 17/6
11:35-17:40
2 stops25h 05m
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.
Travel insights for flights from Dulles Intl to Northern Ireland
Get recent, data-driven insights about flights from Dulles Intl to Northern Ireland including ideal travel times, pricing trends, and more.
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 21 February 2025.
Entertainment
Overall
Food
Crew
Boarding
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Overall
Food
Crew
Boarding
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Overall
Food
Crew
Boarding
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Overall
Food
Crew
Boarding
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Overall
Food
Crew
Boarding
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Entertainment
Overall
Food
Crew
Boarding
Comfort
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
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