$248 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 Washington, D.C. departing on 3/3. 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.

 
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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Everything you should know

Cheapest round-trip
$405
Typical prices: $507-$643
Multiple Airlines
Mon 3/16Mon 3/23
DUB - IAD • 1 stop
Cheapest non-stop
$536
Typical prices: $516-$601
Aer Lingus
Thu 2/12Sun 2/15
DUB - IAD • Non-stop
Top airlines
Aer Lingus
Most flights • 14 per week
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
September
Cheapest • 12% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ireland to Washington, D.C.

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ireland to Washington, D.C. 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 round-trip flight deals from Ireland to Washington, D.C.

Mon, Mar 16 - Mon, Mar 23
Multiple Airlines Logo
8:40 pm - 4:35 pm
DUB
-
IAD
23h 55m
1 stop
Multiple Airlines Logo
7:20 pm - 7:40 pm
IAD
-
DUB
20h 20m
1 stop
$405Multiple Airlines
Wed, May 13 - Mon, May 25
Multiple Airlines Logo
8:35 am - 7:40 pm
DUB
-
BWI
16h 05m
1 stop
Multiple Airlines Logo
9:30 pm - 7:35 pm
BWI
-
DUB
17h 05m
1 stop
$408Multiple Airlines
Wed, Apr 22 - Sat, May 2
Multiple Airlines Logo
8:30 pm - 3:50 pm
DUB
-
IAD
24h 20m
1 stop
Multiple Airlines Logo
5:40 pm - 7:30 pm
IAD
-
DUB
20h 50m
1 stop
$408Multiple Airlines
Thu, Mar 5 - Mon, Mar 9
Icelandair Logo
11:30 am - 6:30 pm
DUB
-
IAD
12h 00m
1 stop
Icelandair Logo
8:40 pm - 10:15 am
IAD
-
DUB
9h 35m
1 stop
$429Icelandair
Thu, Mar 5 - Tue, Mar 10
Icelandair Logo
11:30 am - 6:30 pm
DUB
-
IAD
12h 00m
1 stop
Icelandair Logo
8:40 pm - 10:15 am
IAD
-
DUB
9h 35m
1 stop
$435Icelandair
Wed, Feb 11 - Wed, Feb 18
TAP AIR PORTUGAL Logo
4:55 pm - 3:15 pm
DUB
-
IAD
27h 20m
1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 11:20 pm
IAD
-
DUB
19h 50m
1 stop
$446TAP AIR PORTUGAL
Thu, Feb 12 - Wed, Feb 18
Delta Logo
8:50 am - 10:12 pm
DUB
-
DCA
18h 22m
2 stops
Delta Logo
11:06 am - 8:00 am
DCA
-
DUB
15h 54m
2 stops
$507Delta
Thu, Feb 12 - Sun, Feb 15
Delta Logo
5:55 am - 5:50 pm
DUB
-
DCA
16h 55m
2 stops
Delta Logo
5:59 pm - 3:45 pm
DCA
-
DUB
16h 46m
2 stops
$509Delta
Wed, May 6 - Sun, May 10
United Airlines Logo
12:30 pm - 5:25 pm
SNN
-
DCA
9h 55m
1 stop
United Airlines Logo
6:05 pm - 10:15 am
DCA
-
SNN
11h 10m
1 stop
$730United Airlines
Wed, May 6 - Sun, May 10
United Airlines Logo
12:30 pm - 7:31 pm
SNN
-
DCA
12h 01m
1 stop
United Airlines Logo
6:05 pm - 10:15 am
DCA
-
SNN
11h 10m
1 stop
$731United Airlines
Booking Insights

KAYAK's insights & trends for flights to Washington, D.C.

Get data-powered insights and trends for flights to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Washington, D.C., 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. is September, where tickets cost $511 on average for one-way flights. On the other hand, the most expensive months are August and July, where the average cost of tickets from Ireland is $786 and $677 respectively. For return trips, the best month to travel is September with an average price of $511.

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

If you’re looking for cheap airfare to Washington, D.C., 25% of our users found tickets to Washington, D.C. for the following prices or less: From Dublin $521 one-way - $631 round-trip.

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

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., 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 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 36 days before departure.

Which is the cheapest airport to fly into in Washington, D.C.?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Washington, D.C. is Baltimore/Washington Airport, with an average flight price of $231.

Good to know

Low seasonFebruary
Cheapest flight$248
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Dublin to Washington Dulles Airport

FAQs - booking Washington, D.C. flights

  • Which Washington, D.C. airport is closest to central Washington, D.C.?

    Out of the 2 airports in Washington, D.C., Reagan Washington National Airport is the nearest to the city center (4 miles). You'll travel 22 miles to reach the center of Washington, D.C. if you land in Washington Dulles Airport

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

    On average, a flight to Washington, D.C. costs $704. The cheapest price found on KAYAK in the last 2 weeks cost $461 and departed from Dublin Airport.

  • 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 Wednesday where tickets can be as cheap as $695. On the other hand, the most expensive day to fly is Friday, where prices are $843 on average.

  • 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 travelers 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 round-trip 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.

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

    The cheapest time of day to fly to Washington, D.C. is generally in the evening, when flights cost $636 on average. The most expensive time of day to fly to Washington, D.C. is generally in the morning, which is peak travel time and where the average cost of a ticket is $815.

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $521 or less one-way and $631 or less round-trip.
  • 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 Washington, D.C.

 
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 Washington, D.C.? 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 9214 reviews
8.1Crew
7.7Boarding
7.1Entertainment
6.6Food
7.3Comfort
Airline reviews

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

6.0 GoodMichael, Jan 2026
GVA - IAD
Read more United Airlines reviews

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.

The flight crew where really good. Better then the crew from BNE to SFO

Safe made to destination. Late to start at GVA for icy reasons but we fought our next fly.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

l really enjoy very much the flight was very pleasant

The flight was delayed for 1:30 hours for maintenance issues. They should give more information about connecting flights. For a Business Cabin the Crew was mediocre.

The food is terrible. The same pasta or chicken with bad taste and presentation

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

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

Customer service was excellent! The app was terrible, tried several times to check in without success! But the young lady that checked us in was absolutely terrific and helpful.

The same as I stated prior. We incurred extra costs that should be reimbursed, given we were not communicated with about schedule changes.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Linthicum Heights
Hanover
Springfield
Gaithersburg
Towson
Oxon Hill
Owings Mills
Glen Burnie
Greenbelt
Ellicott City
Edgewood
Colonial Beach
Pikesville
Lutherville Timonium
Hunt Valley
Camp Springs
Stevensville
Westminster
Hyattsville
Chesapeake Beach

Everything you need to know for your flight to Washington, D.C.

Cabin class types available on flights to Washington, D.C.

Cabin classes available on flights to Washington, D.C.. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.