Cheap flights from Dublin to Washington, D.C. Dulles Intl Airport from £270

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — IAD
24 Aug — 31 Aug1
1 adult

Cheapflights Tip: The best prices from Dublin to Washington, D.C. Dulles Intl are usually found in February or January, booked 73 days in advance, depart on a Thursday or Tuesday and return on a Sunday

Cheap 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 19 August 2025.

Round-trip from

£275

One-way from

£270

Popular in

August

Cheapest in

February

Average price

£591

Good round-trip deal

£485 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 2/10-9/10
  • 3 total stops
  • 68h 44m total
  • Dublin to Washington, D.C.
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 19/9
  • 1 total stop
  • 14h 50m total
  • Dublin to Washington, D.C.
Highest demand for flights based on searches. 13% potential increase in price (£52 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return price).
Average for round-trip flights in August 2025
Price to beat on a round-trip flight from Dublin to Washington, D.C. Dulles Intl.

Find flight deals from Dublin to Dulles Intl

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 19 August 2025.

Thu 2/1012:40DUB - IAD
1 stop12h 19mScandinavian Airlines
Thu 9/1022:05IAD - DUB
2 stops56h 25mScandinavian Airlines
Deal found 17/8£275
Tue 28/1019:05DUB - IAD
1 stop27h 10mScandinavian Airlines
Thu 13/1120:30IAD - DUB
1 stop16h 50mScandinavian Airlines
Deal found 18/8£290
Tue 28/1019:05DUB - IAD
1 stop27h 10mScandinavian Airlines
Sat 8/1120:30IAD - DUB
1 stop34h 15mScandinavian Airlines
Deal found 18/8£291
Wed 22/1019:05DUB - IAD
1 stop29h 54mScandinavian Airlines
Sat 8/1120:30IAD - DUB
1 stop34h 15mScandinavian Airlines
Deal found 18/8£294
Mon 6/1019:05DUB - IAD
1 stop29h 54mScandinavian Airlines
Tue 14/1022:05IAD - DUB
1 stop15h 10mScandinavian Airlines
Deal found 18/8£295
Mon 13/1019:05DUB - IAD
1 stop29h 54mScandinavian Airlines
Thu 23/1022:05IAD - DUB
2 stops16h 05mScandinavian Airlines
Deal found 19/8£299
Thu 18/914:15DUB - IAD
1 stop10h 05mIcelandair
Mon 29/920:30IAD - DUB
1 stop11h 45mIcelandair
Deal found 18/8£307
Tue 28/1019:05DUB - IAD
1 stop27h 10mScandinavian Airlines
Wed 5/1120:30IAD - DUB
1 stop16h 50mScandinavian Airlines
Deal found 18/8£308
Wed 22/1019:05DUB - IAD
1 stop29h 54mScandinavian Airlines
Wed 5/1120:30IAD - DUB
1 stop34h 15mScandinavian Airlines
Deal found 18/8£312
Fri 3/1019:05DUB - IAD
1 stop29h 54mScandinavian Airlines
Mon 13/1022:05IAD - DUB
1 stop15h 10mScandinavian Airlines
Deal found 18/8£313

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 19 August 2025.
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

Dublin

Fly to

Dulles Intl

Route

Depart

Return

Price

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 2/10

12:40-19:59

1 stop12h 19m

Washington, D.C. Dulles Intl

Thu 9/10

22:05-11:30

2 stops56h 25m

£275

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 28/10

19:05-18:15

1 stop27h 10m

Washington, D.C. Dulles Intl

Thu 13/11

20:30-18:20

1 stop16h 50m

£290

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 13/12

10:10-18:50

1 stop13h 40m

Washington, D.C. Dulles Intl

Thu 8/1

20:30-09:25

1 stop31h 55m

£291

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 28/10

19:05-18:15

1 stop27h 10m

Washington, D.C. Dulles Intl

Sat 8/11

20:30-11:45

1 stop34h 15m

£291

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 28/10

19:05-18:15

1 stop27h 10m

Washington, D.C. Dulles Intl

Mon 10/11

20:30-11:45

1 stop34h 15m

£291

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 22/10

19:05-19:59

1 stop29h 54m

Washington, D.C. Dulles Intl

Sat 8/11

20:30-11:45

1 stop34h 15m

£294

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 13/10

19:05-19:59

1 stop29h 54m

Washington, D.C. Dulles Intl

Thu 23/10

22:05-09:25

1 stop30h 20m

£294

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 22/10

19:05-19:59

1 stop29h 54m

Washington, D.C. Dulles Intl

Mon 10/11

20:30-18:20

1 stop16h 50m

£294

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 6/10

19:05-19:59

1 stop29h 54m

Washington, D.C. Dulles Intl

Tue 14/10

22:05-18:15

1 stop15h 10m

£295

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 19/9

05:30-15:20

1 stop14h 50m

£270

Flights are sorted by cheapest return flights first.

Deals found on 19/8

Showing 1-10 of 18 results
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 8 August 2025.

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 73 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, January is the cheapest month in which you can book a flight from Dublin to Washington, D.C. Dulles Intl Airport (average of £599). Flying from Dublin to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £947). 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 19 August 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 28% on flights from Dublin to Washington, D.C. Dulles Intl Airport by exploring options for tickets at midday.

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 19 August 2025.
Check out reviews from past customers who have flown with United Airlines, Aer Lingus, andIcelandair 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.

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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 13 outbound flights to Washington, D.C. Dulles Intl per day. 5 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 £275, Scandinavian Airlines can have you in Washington, D.C. Dulles Intl Airport from Dublin in 12h 19m. Airlines will cover a distance of 3393 mi.

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

    Flying on Icelandair is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at £292. Additional return tickets that might be worth considering are offered by British Airways and Lufthansa, with the lowest prices starting at £305 and £310, respectively. You may be able to fly from Dublin to Washington, D.C. Dulles Intl Airport for 33% 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 Iberia (72%), American Airlines (69%) or Aer Lingus (69%) 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 £384. On average you can expect to pay £578. The most popular route, (Dublin - Washington, D.C. Dulles Intl), can usually be booked for £622.

  • 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, January is the cheapest month in which you can book a flight from Dublin to Washington, D.C. Dulles Intl Airport (average of £599). Flying from Dublin to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £947). 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
Woodbridge
Arlington
College Park
Laurel
Tysons

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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.

Top 5 airlines flying from Dublin to Dulles Intl

Discover the top 5 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 19 August 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£292Average£328FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£305Average£530FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£310Average£500FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£318Average£535FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£334Average£424FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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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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