Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Dublin to Washington, D.C. Dulles Intl Airport from £319

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — IAD
13 Nov — 20 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Dublin to Washington, D.C. Dulles Intl are usually found in November or January, booked 73 days in advance, depart on a Tuesday or Thursday 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 14 October 2025.

Round-trip from

£319

Popular in

August

Cheapest in

November

Average price

£404

Good round-trip deal

£443 or less

Good one-way deal

£512 or less
Icelandair
  • Icelandair
  • 5/12-8/12
  • 2 total stops
  • 21h 35m total
  • Dublin to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£50 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 October 2025
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

Find 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 14 October 2025.

Fri 5/1211:30DUB - IAD
1 stop12h 00mIcelandair
Mon 8/1219:40IAD - DUB
1 stop9h 35mIcelandair
Deal found 13/10£319
Tue 11/1108:50DUB - IAD
1 stop11h 45mAmerican Airlines
Sun 16/1121:45IAD - DUB
1 stop11h 35mAmerican Airlines
Deal found 13/10£319
Tue 11/1108:50DUB - IAD
1 stop11h 45mBritish Airways
Sun 16/1121:45IAD - DUB
1 stop11h 35mBritish Airways
Deal found 12/10£322
Wed 26/1112:15DUB - IAD
Nonstop8h 20mAer Lingus
Wed 3/1217:05IAD - DUB
Nonstop6h 50mAer Lingus
Deal found 12/10£327
Fri 28/1112:15DUB - IAD
Nonstop8h 20mAer Lingus
Fri 5/1221:00IAD - DUB
Nonstop6h 50mAer Lingus
Deal found 14/10£328
Fri 21/1112:15DUB - IAD
Nonstop8h 20mAer Lingus
Sun 7/1221:00IAD - DUB
Nonstop6h 50mAer Lingus
Deal found 12/10£335
Wed 26/1110:20DUB - IAD
1 stop14h 35mBritish Airways
Wed 3/1221:45IAD - DUB
1 stop14h 15mBritish Airways
Deal found 12/10£337
Sun 21/1220:40DUB - IAD
1 stop23h 55mMultiple Airlines
Sun 11/118:20IAD - DUB
1 stop10h 30mMultiple Airlines
Deal found 12/10£338
Mon 27/1020:40DUB - IAD
1 stop23h 55mBritish Airways
Tue 4/1121:45IAD - DUB
1 stop29h 10mBritish Airways
Deal found 13/10£339
Tue 21/1008:55DUB - IAD
1 stop11h 40mKLM
Tue 28/1019:59IAD - DUB
1 stop8h 46mKLM
Deal found 13/10£344
Fri 28/1105:55DUB - IAD
1 stop15h 10mDelta
Fri 27/218:50IAD - DUB
1 stop15h 55mDelta
Deal found 14/10£349

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 14 October 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

Tue 11/11

08:50-15:35

1 stop11h 45m

Washington, D.C. Dulles Intl

Sun 16/11

21:45-14:20

1 stop11h 35m

£319

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 5/12

11:30-18:30

1 stop12h 00m

Washington, D.C. Dulles Intl

Mon 8/12

19:40-10:15

1 stop9h 35m

£320

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 11/11

08:50-15:35

1 stop11h 45m

Washington, D.C. Dulles Intl

Sun 16/11

21:45-14:20

1 stop11h 35m

£322

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 11/2

11:30-17:15

2 stops34h 45m

Washington, D.C. Dulles Intl

Wed 18/2

20:30-18:20

1 stop16h 50m

£331

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 21/12

20:40-15:35

1 stop23h 55m

Washington, D.C. Dulles Intl

Sun 11/1

18:20-09:50

1 stop10h 30m

£338

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 27/10

17:55-16:35

1 stop26h 40m

Washington, D.C. Dulles Intl

Tue 4/11

18:20-07:55

1 stop32h 35m

£339

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 28/11

08:50-16:05

1 stop12h 15m

Washington, D.C. Dulles Intl

Fri 5/12

19:59-15:45

2 stops14h 46m

£349

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 28/11

05:55-16:05

1 stop15h 10m

Washington, D.C. Dulles Intl

Fri 27/2

18:50-15:45

1 stop15h 55m

£349

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 26/11

08:50-16:05

1 stop12h 15m

Washington, D.C. Dulles Intl

Tue 24/2

12:30-07:50

2 stops14h 20m

£350

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 31/10

05:55-17:05

1 stop15h 10m

Washington, D.C. Dulles Intl

Thu 13/11

12:11-15:45

2 stops22h 34m

£350

Flights are sorted by cheapest return flights first.

Deals found on 12/10

Showing 1-10 of 16 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 10 October 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 £278). Flying from Dublin to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £448). 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 14 October 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 40% on flights from Dublin to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the evening.

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 14 October 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.
United Airlines
7.4
Good
8,975 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
8,975 reviews
United Airlines
7.4
Good
8,975 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Aer Lingus
7.2
Good
1,336 reviews
United Airlines
7.4
Good
8,975 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Icelandair
7.0
Good
556 reviews
United Airlines
7.4
Good
8,975 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Lufthansa
6.8
Okay
7,487 reviews
United Airlines
7.4
Good
8,975 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
British Airways
6.7
Okay
7,456 reviews
United Airlines
7.4
Good
8,975 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

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 £319, American Airlines can have you in Washington, D.C. Dulles Intl Airport from Dublin in 11h 45m. 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 Icelandair is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at £297. Additional return tickets that might be worth considering are offered by Lufthansa and British Airways, with the lowest prices starting at £297 and £312, respectively. You may be able to fly from Dublin to Washington, D.C. Dulles Intl Airport for 34% 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 Air Canada (80%), United Airlines (80%) or Lufthansa (77%) 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 £337. On average you can expect to pay £566. The most popular route, (Dublin - Washington, D.C. Dulles Intl), can usually be booked for £322.

  • 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 £278). Flying from Dublin to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £448). 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
Alexandria
College Park
Tysons

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 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 14 October 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£297Average£336FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£297Average£443FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£312Average£538FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£336Average£541FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£339Average£438FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for Dublin to Dulles Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Dublin to Dulles Intl for you. Better yet — we are completely free to use.

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.

Can Cheapflights notify me if prices for flights from Dublin to Dulles Intl become cheaper?

Of course! You can now track prices for flights from Dublin to Dulles Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.