£343 Find Cheap Flights from Ireland to Washington, D.C. – Compare and Save

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Cheap Flights from Ireland to Dulles Intl

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Ireland to Dulles Intl

Wed, 11 Nov - Fri, 13 Nov
Aer Lingus Logo
15:50 - 19:20DUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 30mdirect
Aer Lingus Logo
20:50 - 08:45IAD  Washington, D.C. Dulles Intl-DUB Dublin
6h 55mdirect
£420Aer Lingus
Tue, 10 Nov - Fri, 13 Nov
Aer Lingus Logo
15:50 - 19:20DUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 30mdirect
Aer Lingus Logo
20:50 - 08:45IAD  Washington, D.C. Dulles Intl-DUB Dublin
6h 55mdirect
£420Aer Lingus
Tue, 10 Nov - Thu, 12 Nov
Aer Lingus Logo
15:50 - 19:20DUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 30mdirect
Aer Lingus Logo
17:15 - 05:05IAD  Washington, D.C. Dulles Intl-DUB Dublin
6h 50mdirect
£420Aer Lingus
Wed, 11 Nov - Thu, 12 Nov
Aer Lingus Logo
15:50 - 19:20DUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 30mdirect
Aer Lingus Logo
17:15 - 05:05IAD  Washington, D.C. Dulles Intl-DUB Dublin
6h 50mdirect
£420Aer Lingus
Tue, 10 Nov - Thu, 12 Nov
Multiple Airlines Logo
15:50 - 19:20DUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 30mdirect
Multiple Airlines Logo
17:25 - 09:20IAD  Washington, D.C. Dulles Intl-DUB Dublin
34h 55m2 stops Lisbon Humberto Delgado Madrid Barajas
£442Multiple Airlines
Wed, 11 Nov - Thu, 12 Nov
Multiple Airlines Logo
15:50 - 19:20DUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 30mdirect
Multiple Airlines Logo
17:25 - 09:20IAD  Washington, D.C. Dulles Intl-DUB Dublin
34h 55m2 stops Lisbon Humberto Delgado Madrid Barajas
£442Multiple Airlines
Tue, 1 Dec - Sat, 5 Dec
Icelandair Logo
11:30 - 18:30DUB  Dublin-IAD Washington, D.C. Dulles Intl
12h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
19:40 - 10:15IAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
£445Icelandair
Thu, 3 Dec - Sat, 5 Dec
United Airlines Logo
13:35 - 11:25DUB  Dublin-IAD Washington, D.C. Dulles Intl
26h 50m1 stop Newark
United Airlines Logo
08:15 - 07:10IAD  Washington, D.C. Dulles Intl-DUB Dublin
41h 55m2 stops Chicago O'Hare Intl Toronto Pearson Intl
£510United Airlines
Fri, 27 Nov - Sun, 29 Nov
United Airlines Logo
12:05 - 15:20DUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 15mdirect
United Airlines Logo
22:20 - 10:20IAD  Washington, D.C. Dulles Intl-DUB Dublin
7h 00mdirect
£519United Airlines
Wed, 25 Nov - Wed, 2 Dec
United Airlines Logo
12:05 - 15:20DUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 15mdirect
United Airlines Logo
22:15 - 10:20IAD  Washington, D.C. Dulles Intl-DUB Dublin
7h 05mdirect
£519United Airlines
Booking Insights

KAYAK's insights & trends for flights to Dulles Intl

Get data-powered insights and trends into flights to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest day to fly to Washington, D.C.?

Based on KAYAK data, the cheapest day to fly to Washington, D.C. is Tuesday where round-trip tickets can be as cheap as £595. On the other hand, the most expensive day to fly is Friday, where round-trip prices are £678 on average.

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

The cheapest month for flights to Washington, D.C. Dulles Intl Airport is November, where tickets cost £392 on average for return flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Ireland is £626 and £605 respectively. For one-way flights, the best month to travel is February with an average price of £374.

What is the cheapest time of day to fly to Washington, D.C. Dulles Intl Airport?

The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is generally in the evening, when round-trip flights cost £543 on average. The most expensive time of day to fly to Washington, D.C. Dulles Intl Airport is generally in the morning, which is peak travel time and where the average cost of a ticket is £661.

What is a good deal for flights to Washington, D.C. Dulles Intl Airport?

If you’re looking for cheap airfare to Washington, D.C. Dulles Intl Airport, 25% of our users found tickets to Washington, D.C. Dulles Intl Airport for the following prices or less: From Dublin £553 return.

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

To get a below average price, you should book around 2 weeks before departure, which saves you about 4% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know - Cheap tickets from Ireland to Washington, D.C.

Low season

February

Cheapest flight

£343
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly and prices are also 7% lower on average.
Flight from Dublin to Washington, D.C.

FAQs - booking Washington, D.C. flights

  • How far is Washington, D.C. Dulles Intl Airport from central Washington, D.C.?

    There are 22 miles between Washington, D.C. city centre and Washington, D.C. Dulles Intl Airport.

  • How much is a flight to Washington, D.C.?

    On average, a flight to Washington, D.C. costs £525. The cheapest price found on KAYAK in the last 2 weeks cost £238 and departed from Dublin Airport.

  • How does KAYAK find such low prices on flights to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington, D.C. with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Washington, D.C.

  • Looking for cheap airfare to Washington, D.C.? 25% of our users found round-trip tickets to Washington, D.C. for the following prices or less: Cheap flights to Washington, D.C. from Dublin £480

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Washington, D.C. flight deals.

Reviews of the top airlines flying from Ireland to Dulles Intl

 
Need help choosing which airline to fly with to Dulles Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
Aer LingusOverall score based on 1871 reviews
8.1Crew
7.1Entertainment
7.2Comfort
7.5Boarding
6.7Food
Airline reviews

The staff on the flight were utterly brilliant; there was a young man who was particularly exceptional. Boarding was quick and seamless, and service was great! Seats were fab, as was the entertainment and its ease of access

10.0 ExcellentJessica, Oct 2026
Read more Aer Lingus reviews

The staff on the flight were utterly brilliant; there was a young man who was particularly exceptional. Boarding was quick and seamless, and service was great! Seats were fab, as was the entertainment and its ease of access

i’m The staff on my flight were amazing as always, beautiful professional staff, they do amazing job. the food ? room for improvement

The agents at the boarding desk were not very helpful, however the hostesses on board the flight were great, the food was ok, and there were lots for choices for entertainment. I was stuck in an middle row seat which was a pain on a full flight, but otherwise the flight was great.

First time flying airline. Great experience. Clean plane, comfortable seating, great service.

The boarding time for this flight was ridiculous, longest in all my time flying. There was a problem with the original plane so it was switched at the last minute. Not a good substitution. We were delayed in departing. The bathrooms for economy were not adequate. The crew were pleasant but not present in the economy section, in an ~ 8hr flight only twice did they come through offering water, easy to get very dehydrated. I had to go and ask every hour for more water. The seats were cramped, and I have no idea what they did to the coffee but it was undrinkable. The food, was disgusting, utterly inedible, I am stunned by the lack of care and quality with the inflight service, very disappointing, I had expected better from Aer Lingus.

I was not admitted to the flight!!! i need a refund for this.

I was so grateful for the kindness of the crew. They made a long trip very pleasant. Food was delicious. Many movie options

We were very satisfied and would fly with Aer Lingus again in the future.

during a very rough flight, I was forced to sit in a last row seat, fell asleep, and was forced to return to my assigned seat after the turbulence. The stewardess then used that seat to sleep.

First the price I paid was excellent, my flight was full, but my seat was roomy. The one downside to the experience was they had games on the entertainment console. The guy behind me poked at my head about half the flight. I hope they get rid of this feature.

Worst boarding experience, flight extremely delayed causing super tight connect and deplaning was a disaster as ppl were pushing and shoving to get off. Then after flying over 8 hours had to get off a job to next flight. Limited beverage service in Business class (water or white wine) no food. The plane was very cold (temperature) so uncomfortable

The business class service was very good. The crew was helpful and the food was enjoyable. Boarding was well organized.

Entertainment was great. Seats were good. They did not have my pre-ordered hot food product available but did comp me something cold in place of the item.

No water or beverage was provided. I had to ask for water. The sole flight attendant had more interest in selling the credit card. In addition when we got to Dulles the plane and gate were misaligned and it took at least 15 minutes to get off the plane.

Flight was delayed almost an hour because the cleaning crew broke one of the bathroom doors.

When we boarded we were treated with care and it never stopped. Got towels before breakfast and after snacks was a lovely touch!

The flight crew was the worst I've experienced. If they worked for me, I would fire them immediately. They never smiled, they seemed angry and avoided passengers as much as possible. The food was not edible, and my luggage was lost. I will never fly United again!!!

Fought with Lufthansa was poor, seats are uncomfortable, food was bad and luggage did not arrive to IA

Awful!!!. I do not recommend United. The flight staff are unhappy and don't attempt to make the passengers feel comfortable or welcome. The food is not edible, and the seats are miserable. My expensive luggage was destroyed, and the ticket prices are too much for the experience.

Slight delay but not bad. UA app worked well! Got regular updates of gate changes, etc. Don't have any complaints.

Travelling to a place near Dulles Intl?

Book flights to Dulles Intl if you plan to visit one of these locations
Winchester
Alexandria
Woodbridge
Tysons
Fairfax
Annapolis
Silver Spring
Rockville
Chantilly
Sterling
Laurel
Gaithersburg
Reston
College Park
National Harbor
Front Royal
Cambridge
Martinsburg
Springfield
Westminster

More options for your flight to Dulles Intl