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Cheap flights from Ireland to Washington, D.C. Dulles Intl Airport from £251
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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — IAD
26 Nov — 3 Dec1
Cheap flight deals from Ireland to Dulles Intl
Keep the following information in mind while searching for Ireland to Dulles Intl flight deals. Data was last updated 27 October 2025.
Find flight deals from Ireland to Dulles Intl
Cheapest flights from Ireland to Dulles IntlExplore the most affordable flight options available from Ireland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2025.
Explore the most affordable flight options available from Ireland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2025.
Tue 16/1208:50DUB - IAD
1 stop11h 45mBritish Airways
Tue 6/118:20IAD - DUB
1 stop20h 20mBritish Airways
Deal found 25/10£321
Wed 10/1216:20DUB - IAD
Nonstop8h 10mAer Lingus
Wed 17/1221:00IAD - DUB
Nonstop6h 50mAer Lingus
Deal found 26/10£330
Mon 3/1116:20DUB - IAD
Nonstop8h 10mAer Lingus
Sun 16/1121:00IAD - DUB
Nonstop6h 50mAer Lingus
Deal found 26/10£336
Wed 26/1113:10DUB - IAD
1 stop11h 45mBritish Airways
Thu 26/218:20IAD - DUB
1 stop10h 30mBritish Airways
Deal found 27/10£339
Tue 16/1208:50DUB - IAD
1 stop11h 45mBritish Airways
Sun 4/121:45IAD - DUB
1 stop29h 10mBritish Airways
Deal found 25/10£339
Mon 3/1105:55DUB - IAD
1 stop15h 10mDelta
Sun 9/1118:50IAD - DUB
1 stop15h 55mDelta
Deal found 27/10£351
Tue 11/1108:50DUB - IAD
1 stop12h 15mKLM
Sun 16/1115:35IAD - DUB
1 stop11h 10mKLM
Deal found 26/10£351
Sun 16/1105:55DUB - IAD
1 stop15h 10mDelta
Sun 14/1212:30IAD - DUB
1 stop14h 15mDelta
Deal found 27/10£353
Wed 5/1108:50DUB - IAD
1 stop12h 15mKLM
Wed 3/1218:05IAD - DUB
1 stop13h 35mKLM
Deal found 27/10£354
Thu 11/1205:55DUB - IAD
2 stops18h 24mDelta
Thu 8/112:23IAD - DUB
2 stops14h 27mDelta
Deal found 27/10£354
Sat 1/1105:55DUB - IAD
2 stops21h 05mDelta
Mon 10/1112:11IAD - DUB
2 stops14h 39mDelta
Deal found 25/10£355
Cheapflights Fare Finder
Customise your flight search to find flights from Ireland to Dulles Intl 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 27 October 2025.
Use the filters below to find and compare flights from Ireland to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Ireland
Fly to
Dulles Intl
Route
Depart
Return
Price
DublinWashington, D.C.
DUB - IAD
DUBIAD
Dublin
Wed 17/12
13:10-15:35
1 stop31h 25m
Washington, D.C. Dulles Intl
Sun 4/1
16:29-19:40
2 stops22h 11m
£321
DublinWashington, D.C.
DUB - IAD
DUBIAD
Dublin
Tue 16/12
08:50-15:35
1 stop11h 45m
Washington, D.C. Dulles Intl
Tue 6/1
18:20-19:40
1 stop20h 20m
£321
DublinWashington, D.C.
DUB - IAD
DUBIAD
Dublin
Wed 11/2
13:10-19:55
1 stop11h 45m
Washington, D.C. Dulles Intl
Wed 18/2
18:20-09:40
1 stop10h 20m
£322
DublinWashington, D.C.
DUB - IAD
DUBIAD
Dublin
Fri 12/12
16:20-19:30
Nonstop8h 10m
Washington, D.C. Dulles Intl
Mon 15/12
17:05-04:55
Nonstop6h 50m
£336
DublinWashington, D.C.
DUB - IAD
DUBIAD
Dublin
Sun 1/2
12:15-15:35
Nonstop8h 20m
Washington, D.C. Dulles Intl
Sat 7/2
17:05-04:55
Nonstop6h 50m
£336
DublinWashington, D.C.
DUB - IAD
DUBIAD
Dublin
Mon 5/1
12:15-15:35
Nonstop8h 20m
Washington, D.C. Dulles Intl
Mon 26/1
17:05-04:55
Nonstop6h 50m
£336
DublinWashington, D.C.
DUB - IAD
DUBIAD
Dublin
Wed 26/11
08:50-15:35
1 stop11h 45m
Washington, D.C. Dulles Intl
Thu 26/2
18:20-09:50
1 stop10h 30m
£339
DublinWashington, D.C.
DUB - IAD
DUBIAD
Dublin
Sun 21/12
20:40-15:35
1 stop23h 55m
Washington, D.C. Dulles Intl
Tue 6/1
18:20-19:40
1 stop20h 20m
£339
DublinWashington, D.C.
DUB - IAD
DUBIAD
Dublin
Wed 25/3
08:50-16:35
1 stop11h 45m
Washington, D.C. Dulles Intl
Wed 15/4
17:40-09:45
1 stop11h 05m
£342
DublinWashington, D.C.
DUB - IAD
DUBIAD
Dublin
Wed 26/11
08:50-16:05
1 stop12h 15m
Washington, D.C. Dulles Intl
Tue 24/2
12:30-07:50
2 stops14h 20m
£351
Showing 1-10 of 18 results
Best time to book a flight from Ireland to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Ireland with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ireland to Washington, D.C. Dulles Intl Airport
What is the cheapest month to book a flight from Ireland to Washington, D.C. Dulles Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Dulles Intl Airport (average of £282). Flying from Ireland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £449). 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.
What is the cheapest time of day to fly from IE to IAD?
Find hourly flight availability from Ireland to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 October 2025.
Unlike in the morning, when flights are generally more expensive, you can save up to 40% on flights from Ireland to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the evening.
Weekly flight availability from Ireland to Washington, D.C. Dulles Intl Airport
Explore weekly flight availability from Ireland to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 27 October 2025.
The most flights from IE0 to IAD are scheduled on a Monday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (12 on average).
Reviews of airlines servicing Dulles Intl
Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated 27 October 2025.
Get a feel of what it's like to fly with United Airlines, Aer Lingus, andIcelandair from Ireland to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Overall
7.4
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Boarding
7.7
Overall
7.4
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Boarding
7.7
Overall
7.4
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Boarding
7.7
Overall
7.4
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Boarding
7.7
Overall
7.4
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Boarding
7.7
Overall
7.4
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Related info for your journey
Find useful and relevant information for your journey from Ireland to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Travelling to a place near Washington, D.C. Dulles Intl Airport?
Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locationsSilver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park
Tysons
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Alternative routes for Ireland to Dulles Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Ireland to Dulles Intl
Discover the top 5 airlines that operate flights from Ireland to Dulles Intl. 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 858,174 searches. Data last updated 27 October 2025.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Ireland to Dulles Intl?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dulles Intl from Ireland today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Ireland to Dulles Intl?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ireland to Dulles Intl.
Can Cheapflights find flights from Ireland to Dulles Intl with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Ireland to Dulles Intl, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Ireland to Dulles Intl become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Ireland today and book when prices fit your budget.