$461+ Cheap flights from Dulles Intl (IAD) to Northern Ireland
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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Dulles Intl to Northern Ireland with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 junio 12, 2025.
Round-trip from | $630 (American Airlines) |
|---|---|
One-way from | $461 (Cheapflightsfares) |
Popular in | June |
Cheapest in | August |
Average price | $1,232 |
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 junio 12, 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 junio 12, 2025.
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Ovago deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Bravofly deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KLM deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This SmartFares deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This SmartFares deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize 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 2,558,603 searches. Data last updated junio 12, 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
sáb. 9/6
5:50 pm-10:10 am
1 stop11h 20m
Belfast City
sáb. 12/20
6:30 am-3:35 pm
1 stop14h 05m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
vie. 9/5
5:50 pm-8:50 am
1 stop10h 00m
Belfast City
lun. 9/8
7:30 pm-3:00 pm
2 stops24h 30m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
lun. 8/4
8:31 pm-4:55 pm
2 stops15h 24m
Belfast City
mié. 8/20
5:25 pm-12:02 pm
2 stops23h 37m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
vie. 9/5
8:23 pm-4:55 pm
2 stops15h 32m
Belfast City
lun. 9/8
6:30 am-7:43 pm
2 stops18h 13m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
vie. 8/1
8:31 pm-4:55 pm
2 stops15h 24m
Belfast City
jue. 8/7
6:30 am-3:35 pm
1 stop14h 05m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
vie. 10/3
6:10 pm-9:10 pm
2 stops22h 00m
Belfast Intl
dom. 10/12
8:40 am-1:30 pm
2 stops33h 50m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
mar. 10/28
10:00 pm-4:25 pm
2 stops14h 25m
Belfast City
sáb. 11/1
6:00 pm-4:35 pm
2 stops26h 35m
Washington, D.C.Campbeltown
IAD - CAL
IADCAL
Washington, D.C. Dulles Intl
mié. 7/9
5:20 pm-8:45 am
2 stops34h 25m
Campbeltown Machrihanish
mié. 7/16
5:35 pm-6:55 pm
2 stops30h 20m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
lun. 7/7
5:50 pm-8:50 am
1 stop10h 00m
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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Northern Ireland (average of $657). Flying from Washington, D.C. Dulles Intl Airport to Northern Ireland in June is currently the most expensive (average of $1,189). 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 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Northern Ireland when rainfall is around 2.0 in.
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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).
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 junio 12, 2025.
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Dulles Intl to Northern Ireland
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Dulles Intl to Northern Ireland
Discover the top airline that operate flights from Dulles Intl to Northern Ireland. 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 2,558,603 searches. Data last updated junio 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$575 | Average$844 | FlexibilityNo cancel fee | On-time70% |