£263 Find Cheap Flights from Ireland to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Dulles Intl departing on 5/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Washington, D.C., as well as popular online travel agencies
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Flight Deals

Cheap Flights from Ireland to Dulles Intl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Ireland to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Ireland to Dulles Intl

Thu, 9 Apr - Wed, 15 Apr
Icelandair Logo
14:15 - 19:20
DUB
-
IAD
10h 05m
1 stop
Icelandair Logo
20:30 - 13:15
IAD
-
DUB
11h 45m
1 stop
£387Icelandair
Wed, 8 Apr - Tue, 14 Apr
Icelandair Logo
12:15 - 19:20
DUB
-
IAD
12h 05m
1 stop
Icelandair Logo
20:30 - 11:05
IAD
-
DUB
9h 35m
1 stop
£388Icelandair
Wed, 22 Apr - Sun, 26 Apr
Icelandair Logo
12:15 - 19:20
DUB
-
IAD
12h 05m
1 stop
Icelandair Logo
20:30 - 13:15
IAD
-
DUB
11h 45m
1 stop
£389Icelandair
Tue, 21 Apr - Sat, 2 May
Icelandair Logo
14:15 - 19:20
DUB
-
IAD
10h 05m
1 stop
Icelandair Logo
20:30 - 11:05
IAD
-
DUB
9h 35m
1 stop
£393Icelandair
Thu, 21 May - Mon, 1 Jun
Icelandair Logo
14:15 - 19:20
DUB
-
IAD
10h 05m
1 stop
Icelandair Logo
20:30 - 13:15
IAD
-
DUB
11h 45m
1 stop
£395Icelandair
Wed, 26 Aug - Wed, 23 Sep
Icelandair Logo
12:15 - 19:20
DUB
-
IAD
12h 05m
1 stop
Icelandair Logo
20:30 - 13:15
IAD
-
DUB
11h 45m
1 stop
£398Icelandair
Wed, 8 Apr - Mon, 13 Apr
Scandinavian Airlines Logo
19:05 - 17:00
DUB
-
IAD
26h 55m
1 stop
Scandinavian Airlines Logo
20:20 - 18:20
IAD
-
DUB
17h 00m
1 stop
£398Scandinavian Airlines
Sun, 10 May - Fri, 29 May
Icelandair Logo
12:15 - 22:15
DUB
-
IAD
15h 00m
1 stop
Icelandair Logo
20:30 - 13:15
IAD
-
DUB
11h 45m
1 stop
£399Icelandair
Sun, 10 May - Wed, 3 Jun
Icelandair Logo
12:15 - 22:15
DUB
-
IAD
15h 00m
1 stop
Icelandair Logo
23:20 - 11:05
IAD
-
DUB
30h 45m
1 stop
£400Icelandair
Wed, 22 Apr - Sun, 26 Apr
Icelandair Logo
12:15 - 19:20
DUB
-
IAD
12h 05m
1 stop
Icelandair Logo
20:30 - 13:15
IAD
-
DUB
11h 45m
1 stop
£407Icelandair
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 flight to Washington, D.C.?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to Washington, D.C. was found on the route from Dublin, at £387 return. The most popular connection is from London to Washington, D.C. and KAYAK users have found return deals for as low as £408 in the last 3 days.

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

The average price of all round-trip flights to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to Washington, D.C. is Tuesday where round-trip tickets can be as cheap as £587. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are £641 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Washington, D.C. Dulles Intl Airport is November, where tickets cost £396 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 £609 and £608 respectively. For one-way flights, the best month to travel is November with an average price of £396.

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

The average price for all round-trip flights to Washington, D.C. Dulles Intl Airport depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is generally in the evening, when round-trip flights cost £499 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 £621.

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 £488 return.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 5 weeks before departure, which saves you about 20% 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 seasonFebruary
Cheapest flight£263
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (29% more expensive on average)
Flight from Dublin to Washington, D.C.

FAQs - booking Washington, D.C. flights

  • What is the cheapest flight to Washington, D.C.?

    In the last 3 days, the cheapest flight deal to Washington, D.C. was found on the route from Dublin, at £387 return. The most popular connection is from London to Washington, D.C. and KAYAK users have found return deals for as low as £408 in the last 3 days.

  • 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 £538. The cheapest price found on KAYAK in the last 2 weeks cost £402 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 £671
  • 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 3 airlines flying from Ireland to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to Washington, D.C.. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
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.
7.4
United AirlinesOverall score based on 9427 reviews
7.3Comfort
6.6Food
7.7Boarding
7.1Entertainment
8.1Crew
Airline reviews

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

6.0 GoodOlga, Mar 2026
FRA - IAD
Read more United Airlines reviews

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

Fine not above and beyond as I had a connection that was delayed due to maintenance

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

Great other than a couple very drunk guys that for a while kept bumping my seat from behind. The staff did their best to control them. Even refused serving them alcohol and allowed the gal sitting next to them to move.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

The seats were comfortable and we had leg room. Great entertainment.

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

I love the direct flights. It saves a lot of hassle and allows immigration and customs in Ireland, making arrival much easier.

Great. Has a problem with DOB. Fixed 4 us. Led to a 5 hour earlier flight to London!

One of the best flight experiences I've have had in along time. Would fly with them again.

So, the trip from Dublin to LA did not really happen because the flight took off before we could finish the transfer.

Very nice experience. Flight had good entertainment system and good food options. Customer service was very friendly and nice as well.

Like - the crew were nice Dislike - sitting on the tarmac for long periods after boarding and landing.

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

It’s my new favourite airline! Everything was smooth and relaxed!

One of the best flights I've been on in a while. Very genuinely friendly staff. Courteous, kind, respectful. On a past flight (not Aer Lingus) I remember being woken up rudely to put my seat forward. Like a child being berated for something. Oddly jarring experience when someone could just tap you gently on the shoulder and gesture kindly. But I noticed the Aer Lingus staff were incredibly patient with everyone on the plane. It's the holiday season and I noticed a lot more elderly customers on the plane than I typically see flying, and the staff went above and beyond with helping accommodate people. Service throughout the flight was flawless. They came through offering water, and picking up garbage at perfect intervals. Seemed like this flight, everyone was on point. And the flight landed early on top of that

How about changing the personal out to more friendly human beings? This team was pretty arrogant. No fun!!

Everything could have been better. What needed to be wrong with United went wrong

Excellent service. The crew goes above their way to make the customer comfortable.

It was good. The seats in economy weren’t bad

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Excellent service; they helped me reschedule so I can fly in an earlier flight

Wonderful staff. The boarding process can be improved a little better by adequate prior communication but all in all they did fine. However the boarding gate was quite unfreindly to elderly and who needs help with sevral stairs.

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Very good. Comfortable and I felt well taken care of from start to finish

Travelling to a place near Dulles Intl?

Book flights to Dulles Intl if you plan to visit one of these locations
Alexandria
Winchester
Gaithersburg
Silver Spring
Annapolis
Tysons
Fredericksburg
Fairfax
Woodbridge
Chantilly
Falls Church
Sterling
National Harbor
Rockville
Reston
Cambridge
College Park
Westminster
Laurel
Owings Mills

Everything you need to know for your flight to Dulles Intl

Information on the airport you'll fly into in Washington, D.C.