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Cheap flights from Dublin to Washington, D.C. Dulles Intl Airport from £263

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — IAD
14 Apr — 21 Apr1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Dublin to Washington, D.C. Dulles Intl are usually found in November or September, booked 37 days in advance, depart on a Tuesday or Thursday and return on a Sunday

Cheap flight deals from Dublin to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Dublin to Dulles Intl
Explore the most affordable flight options available from Dublin to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 March 2026.

Thu 9/414:15
DUB
-
IAD
1 stop10h 05m
Icelandair
Wed 15/420:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 12/3£387
Wed 8/412:15
DUB
-
IAD
1 stop12h 05m
Icelandair
Tue 14/420:30
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 14/3£388
Wed 22/412:15
DUB
-
IAD
1 stop12h 05m
Icelandair
Sun 26/420:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 10/3£389
Tue 21/414:15
DUB
-
IAD
1 stop10h 05m
Icelandair
Sat 2/520:30
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 10/3£393
Thu 21/514:15
DUB
-
IAD
1 stop10h 05m
Icelandair
Mon 1/620:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 14/3£395
Wed 26/812:15
DUB
-
IAD
1 stop12h 05m
Icelandair
Wed 23/920:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 12/3£398
Wed 8/419:05
DUB
-
IAD
1 stop26h 55m
Scandinavian Airlines
Mon 13/420:20
IAD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Deal found 12/3£398
Sun 10/512:15
DUB
-
IAD
1 stop12h 05m
Icelandair
Tue 2/620:30
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 10/3£399
Sun 10/512:15
DUB
-
IAD
1 stop15h 00m
Icelandair
Wed 3/623:20
IAD
-
DUB
1 stop30h 45m
Icelandair
Deal found 10/3£400

Find flight deals from Dublin to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 March 2026.

Round-trip from

£387

One-way from

£263

Popular in

July

Cheapest in

November

Average price

£465

Good round-trip deal

£488 or less

Good one-way deal

£402 or less
Icelandair
  • Icelandair
  • 9/4-15/4
  • 2 total stops
  • 21h 50m total
  • Dublin to Washington, D.C.
Search Deals
5/5
  • 5/5
  • 2 total stops
  • 49h 42m total
  • Dublin to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£78 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Dublin to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Dublin to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dublin 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 15 March 2026.
Use the filters below to find and compare flights from Dublin to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 22/4

12:15-19:20

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 26/4

20:30-13:15

1 stop11h 45m

£407
Fastest return journey

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 13/5

12:50-20:20

1 stop12h 30m

Washington, D.C. Dulles Intl

Mon 25/5

17:40-09:40

1 stop11h 00m

£434

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 13/5

05:55-18:53

2 stops17h 58m

Washington, D.C. Dulles Intl

Mon 25/5

06:00-09:15

1 stop22h 15m

£459

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 13/5

19:45-15:50

1 stop25h 05m

Washington, D.C. Dulles Intl

Mon 25/5

22:25-19:35

1 stop16h 10m

£465

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 30/3

08:55-15:35

1 stop11h 40m

Washington, D.C. Dulles Intl

Mon 6/4

21:45-18:25

1 stop15h 40m

£467

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 27/4

08:55-15:35

1 stop11h 40m

Washington, D.C. Dulles Intl

Mon 4/5

18:50-15:25

2 stops15h 35m

£469

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 8/4

05:55-22:59

2 stops22h 04m

Washington, D.C. Dulles Intl

Tue 14/4

21:45-18:25

1 stop15h 40m

£472
Cheapest one-way

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 4/5

06:30-17:52

2 stops40h 22m

£298

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 5/5

18:50-15:10

1 stop25h 20m

£382

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 29/4

20:30-15:50

1 stop24h 20m

£398

Flights are sorted by cheapest return flights first.

Deals found on 13/3

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Best time to book a flight from Dublin to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Dublin 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 Dublin to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Dublin to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a return flight from Dublin to Dulles Intl. Price data was last updated on 13 March 2026.

To ensure you get the cheapest price possible for a flight from Dublin to Washington, D.C. Dulles Intl Airport, you should look to book at least 36 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Dublin to Washington, D.C. Dulles Intl Airport?

Currently, December is the cheapest month in which you can book a flight from Dublin to Washington, D.C. Dulles Intl Airport (average of £277). Flying from Dublin to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £469). 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 DUB to IAD?

Find hourly flight availability from Dublin 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 15 March 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Dublin to Washington, D.C. Dulles Intl Airport as you normally would.

How much does it cost for a return flight from Dublin to Washington, D.C. Dulles Intl Airport?

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 15 March 2026.
Check out reviews from past customers who have flown with United Airlines,Aer Lingus, andLufthansa from Dublin to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,427 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,427 reviews
United Airlines
7.4
Good
9,427 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Aer Lingus
7.2
Good
1,476 reviews
United Airlines
7.4
Good
9,427 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Lufthansa
6.8
Okay
7,849 reviews
United Airlines
7.4
Good
9,427 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Dublin to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Dublin to Washington, D.C. Dulles Intl?

    For a flight from Dublin to Washington, D.C. Dulles Intl, you will be flying from Dublin. Dublin (DUB) is just 5.7 mi from the center of the city. Dublin is the only Dublin airport and it handles 12 outbound flights to Washington, D.C. Dulles Intl per day. 3 airlines have flights to Washington, D.C. Dulles Intl from Dublin on a regular basis.

  • How long is the flight from Dublin to Washington, D.C. Dulles Intl Airport?

    For as low as £407, Icelandair can have you in Washington, D.C. Dulles Intl Airport from Dublin in 12h 05m. Airlines will cover a distance of 3393 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from Dublin to Washington, D.C. Dulles Intl Airport round-trip?

    Flying on Lufthansa is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at £300. Additional return tickets that might be worth considering are offered by United Airlines and Aer Lingus, with the lowest prices starting at £340 and £346, respectively. You may be able to fly from Dublin to Washington, D.C. Dulles Intl Airport for 36% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Dublin to Washington, D.C. Dulles Intl Airport?

    No one likes to see their flight delayed. When booking a flight from Dublin to Washington, D.C. Dulles Intl Airport consider choosing Qatar Airways (100%), American Airlines (98%) or Aer Lingus (98%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Dublin to Washington, D.C. Dulles Intl Airport?

    The cheapest flight price from Dublin to Washington, D.C. Dulles Intl Airport is £402. On average you can expect to pay £733. The most popular route, (Dublin - Washington, D.C. Dulles Intl), can usually be booked for £518.

  • Can I find deals for flights from Dublin to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Dublin to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dublin to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to Dulles Intl.

  • Can I find deals for business class flights from Dublin to Dulles Intl?

    Yes. Cheapflights offers flight deals from Dublin to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Dublin to Washington, D.C. Dulles Intl Airport?

    Currently, December is the cheapest month in which you can book a flight from Dublin to Washington, D.C. Dulles Intl Airport (average of £277). Flying from Dublin to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £469). 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.

See more FAQs

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 locations
Silver Spring
Hanover
Oxon Hill
Gaithersburg
Woodbridge
Arlington
Alexandria
Sterling
College Park

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Dublin to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Dublin to Baltimore flights

Top 3 airlines flying from Dublin to Dulles Intl

Discover the top 3 airlines that operate flights from Dublin 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 15 March 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£300Average£436FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£340Average£596FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£346Average£438FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Dublin to Dulles Intl?

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Why should you use Cheapflights to find cheap flight tickets from Dublin to Dulles Intl?

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Can Cheapflights find flights from Dublin to Dulles Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Dublin to Dulles Intl flexibly with Cheapflights today.

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