IAD

€349 Find Cheap Flights to Washington Dulles Airport – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
€368
Typical prices: €483-€690
Icelandair
Sat 24/11Sat 1/12
DUB - IAD • 1 stop
Cheapest direct flights
€439
Typical prices: €490-€685
Aer Lingus
Thu 1/11Thu 8/11
DUB - IAD • Direct
Direct flights
You can fly direct with Aer Lingus and United Airlines. Average duration is 8h 13m
FAQs
FAQs
Top airlines
Most flights • 14 per week
Best reviews • 7.5 score
Airline reviews
+1
Airline reviews
+1
Top routes
Cheapest • 10% average savings
Most popular
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 9 weeks in advance save around 27% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
+1
Good to know
+1
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We hope you enjoy your trip to Washington, D.C. Dulles Intl Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Dulles Intl

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

Recent return flight deals to Dulles Intl

Tue, 24 Nov - Tue, 1 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
€368Icelandair
Fri, 20 Nov - Fri, 27 Nov
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
€375Icelandair
Thu, 26 Nov - Thu, 3 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
€379Icelandair
Fri, 27 Nov - Sun, 29 Nov
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
€379Icelandair
Sun, 1 Nov - Sun, 8 Nov
Aer Lingus Logo
12:20 - 15:45DUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 25mdirect
Aer Lingus Logo
20:50 - 08:45IAD  Washington, D.C. Dulles Intl-DUB Dublin
6h 55mdirect
€439Aer Lingus
Sun, 1 Nov - Sun, 8 Nov
Aer Lingus Logo
12:20 - 15:45DUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 25mdirect
Aer Lingus Logo
20:50 - 08:45IAD  Washington, D.C. Dulles Intl-DUB Dublin
6h 55mdirect
€449Aer Lingus
Sat, 21 Nov - Wed, 2 Dec
Aer Lingus Logo
12:20 - 15:45DUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 25mdirect
Aer Lingus Logo
20:50 - 08:45IAD  Washington, D.C. Dulles Intl-DUB Dublin
6h 55mdirect
€452Aer Lingus
Fri, 27 Nov - Sat, 28 Nov
United Airlines Logo
13:35 - 11:28DUB  Dublin-IAD Washington, D.C. Dulles Intl
26h 53m1 stop Newark
United Airlines Logo
22:10 - 07:10IAD  Washington, D.C. Dulles Intl-DUB Dublin
28h 00m1 stop Toronto Pearson Intl
€476United Airlines
Mon, 28 Sep - Sun, 11 Oct
United Airlines Logo
09:20 - 15:00DUB  Dublin-IAD Washington, D.C. Dulles Intl
10h 40m1 stop Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
19:05 - 07:20IAD  Washington, D.C. Dulles Intl-DUB Dublin
7h 15mdirect
€503United Airlines
Mon, 28 Sep - Wed, 7 Oct
United Airlines Logo
09:20 - 15:00DUB  Dublin-IAD Washington, D.C. Dulles Intl
10h 40m1 stop Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
22:35 - 10:40IAD  Washington, D.C. Dulles Intl-DUB Dublin
7h 05mdirect
€503United Airlines
Booking Insights

Price, demand, and travel trends for Ireland to Washington, D.C. Dulles Intl Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Ireland to Washington, D.C. Dulles Intl Airport with more confidence.

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

Dublin to Washington, D.C. Dulles Intl Airport is the cheapest route at €368 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to Washington, D.C. Dulles Intl Airport?

A return flight to Washington, D.C. Dulles Intl Airport costs €577 on average, based on data over the past 12 months on KAYAK. Return fares from Dublin average €571, while Cork runs a bit higher at €698.

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

Wednesday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport at €550 return on average over the past 12 months on KAYAK. Tuesday is the most expensive at €642.

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

  • November is the cheapest month to fly to Washington, D.C. Dulles Intl Airport with an average price of €435 return.
  • July (€708) and August (€702) are the most expensive.
  • Based on KAYAK data over the past 12 months.

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

Afternoon flights to Washington, D.C. Dulles Intl Airport are the cheapest at €572 return on average. Evening flights are the most expensive at €691.

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

Flights under €483 are considered a good deal. 25% of KAYAK users found return flights to Washington, D.C. Dulles Intl Airport at or below these prices, with the lowest fares from:

  • Dublin €479
.

When are flights to Washington, D.C. Dulles Intl Airport the cheapest?

Flights to Washington, D.C. Dulles Intl Airport are cheapest 9 weeks before departure. Booking in this window typically costs about 27% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for flights to Washington, D.C. Dulles Intl Airport

Low season

February

Cheapest flight

€349
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly (10% more expensive on average)
Flights from Dublin to Washington, D.C. Dulles Intl Airport

When to book flights to Dulles Intl

Are your dates flexible? Find out the best times to travel to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your questions about flights to Washington, D.C. Dulles Intl Airport, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • What is the difference between the most popular and the most frequent airline at Washington, D.C. Dulles Intl Airport?

    Aer Lingus operates the most flights from Ireland to Washington, D.C. Dulles Intl Airport at 14 per week, and for this route Aer Lingus is also the airline most often selected by KAYAK users searching for flights from Ireland to Washington, D.C. Dulles Intl Airport. The two are sometimes different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • Which airports serve Washington, D.C. and the surrounding area?

    Flights to Washington, D.C. can arrive at several major airports serving the metro area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Nearby alternatives within 80.5 km of Washington, D.C. include Washington, D.C. Reagan-National (DCA), Fort Meade Tipton (FME) and Baltimore/Washington (BWI). These airports are not in Washington, D.C. itself but may be useful depending on your route, airline, and onward travel plans.

  • How long is a direct flight to Washington, D.C. Dulles Intl Airport?

    Direct flights to Washington, D.C. Dulles Intl Airport are available from Dublin, with a flight time of about 8h 00m.

  • How many flights serve Washington, D.C. Dulles Intl Airport?

    Washington, D.C. Dulles Intl Airport receives 3 flights per day and 21 per week from across the world. Dublin has the most flights to Washington, D.C. Dulles Intl Airport with 21 weekly flights.

  • How do I know if a flight to Washington, D.C. Dulles Intl Airport is a good deal?

    A good deal on a flight to Washington, D.C. Dulles Intl Airport is around €483 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • How expensive are last-minute flights to Washington, D.C. Dulles Intl Airport?

    Last-minute fares to Washington, D.C. Dulles Intl Airport – booked within 2 weeks of departure – run 16% above the average return fare of €577.

  • Which airlines should I consider for flights to Washington, D.C. Dulles Intl Airport?

Your guide to booking Washington, D.C. Dulles Intl Airport flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to Washington, D.C. Dulles Intl Airport, aim to book around 9 weeks before you fly. That window historically saves about 27% versus last-minute pricing based on KAYAK booking data over the last 12 months.
  • For flights to Washington, D.C. Dulles Intl Airport, recent KAYAK data shows that stronger deals tend to be around €483 return. If you see a fare below that threshold, it's a good deal – book before the price climbs back up.
  • If you can choose when to go, aim to travel to Washington, D.C. Dulles Intl Airport in November. Return fares historically average €435 that month – typically the cheapest month to travel based on the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to midday to save up to €119 per return. Midday flights to Washington, D.C. Dulles Intl Airport average €572 compared to €691 for afternoon flights. See the time-of-day chart above for the full breakdown.
  • Bag allowances vary by airline, fare type, cabin class, and route. On flights to Washington, D.C. Dulles Intl Airport, some airlines may include bags at no extra cost. For example, Aer Lingus includes a cabin bag and a checked bag in Economy class, Lufthansa includes a cabin bag and a checked bag in Economy class, and United Airlines includes a cabin bag and a checked bag in Economy class. Always check the fare details before booking, since bag policies can change by ticket type.
  • Once you arrive in Washington, D.C. Dulles Intl Airport, a few great places to start are Walter E. Washington Convention Center, Union Station, and New York Avenue Presbyterian Church. These are popular with first-time visitors and can give you a good feel for the area.

Reviews of the top airlines flying 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.
7.4
United AirlinesOverall score based on 10214 reviews
7.7Boarding
6.7Food
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

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.

4.0 OkayJohn, Sept 2026
Read more United Airlines reviews

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.

On time, easy boarding. Anytime you sit in an economy seat, it’s uncomfortable. New plane and the bathrooms were in the galley at the back of the plane which seemed odd.

Did not like the check in guy quibbling over a couple pounds at the luggage weigh in

Just having a little bit more legroom would've been nice.

This is related to my second leg of the flight, from Washington DC to SFO. I understand things happen, but I got home at 3 am for a 12:59 am landing. I live 10 min from the airport. Bridge breaks when a few rows of the plane are off? Maintenance didn’t catch that?

Great Brasilia aircraft - not a Boeing 757 like the next part of the flight. Flight from MCI to IAD was great, on-time, comfortable, did I mention that? The flight from IAD to EDI was painful. One of the reasons I won't fly United again? Boeing 757, with a seat pitch and material that was horrendous. Worst aircraft ever, made worse by United sardine-can tight seating. Oh, and the connection window, 45 minutes, really? At IAD, in different concourses? What idiot came up with that flight scenario? Happily, (for me and my travel insurance people) the flight was late (reminiscent of American Airlines). The crew was professional and courteous.

great starting with the business Class that's was Amazing . thank you United Airlines and brussels Airlines

Best flight in years. Pre-boarding because of my mobility issues. Good food and beverage from beginning to end. Excellent choice of films. Good service by stewardesses. Comfortable seats. I could lie down!

No drink service but there was no N/A as an option to choose. Seats were extremely tight. I am under 5.5 and I bumped my knees have no idea how taller people could manage.

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

I was advertised a free seat selection for a "Smart" fare through BusinessClass.com. I was never able to select a seat. I thus paid extra for a bill of goods I was never provided. would love to speak with a representative of Kayak

Overall good. We weren't able to find out about food options for the flight and there was nothing I could eat due to allergies. The biggest problem was getting our checked bag at Logan. Waited an hour!

I loved both of my flights to Ireland and back to Boston. The only negative was it took over an hour for the baggage to be delivered.

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.

We traveled with my 90 year old mother and she was well cared for by everyone from the wheelchair attendant to crew. Greatly appreciated!

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.

Travelling to a place near Dulles Intl?

Book flights to Dulles Intl if you plan to visit one of these locations
Hanover
Gettysburg
Hyattsville
Woodbridge
Dundalk
Alexandria
Winchester
Ashburn
Fredericksburg
Chantilly
Sterling
Falls Church
Annapolis
Leesburg
Linthicum Heights
Oxon Hill
Herndon
Gaithersburg
Luray
Fairfax

More options for your flight to Dulles Intl