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Cheap flights from Washington, D.C. Dulles Intl Airport to Dublin from £429

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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DUB
14 Jul — 21 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Dublin are usually found in January or November, booked 4 days in advance, depart on a Friday or Monday and return on a Tuesday

Cheap flight deals from Dulles Intl to Dublin

Enter your travel dates to find the best prices.

Cheapest flights from Dulles Intl to Dublin
Explore the most affordable flight options available from Dulles Intl to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 June 2026.

Mon 9/1120:30
IAD
-
DUB
2 stops33h 15m
Scandinavian Airlines
Fri 13/1118:55
DUB
-
IAD
2 stops28h 55m
Scandinavian Airlines
Deal found 10/6£479
Wed 4/1120:30
IAD
-
DUB
2 stops32h 40m
Scandinavian Airlines
Wed 18/1111:30
DUB
-
IAD
2 stops34h 45m
Scandinavian Airlines
Deal found 9/6£500
Mon 12/1022:35
IAD
-
DUB
1 stop30h 25m
TAP AIR PORTUGAL
Mon 19/1005:30
DUB
-
IAD
1 stop14h 40m
TAP AIR PORTUGAL
Deal found 12/6£507
Wed 4/1120:30
IAD
-
DUB
2 stops32h 40m
Scandinavian Airlines
Wed 11/1112:35
DUB
-
IAD
2 stops33h 40m
Scandinavian Airlines
Deal found 9/6£509
Thu 5/1120:30
IAD
-
DUB
2 stops31h 50m
Scandinavian Airlines
Wed 11/1112:35
DUB
-
IAD
2 stops33h 40m
Scandinavian Airlines
Deal found 9/6£511
Thu 5/1120:30
IAD
-
DUB
2 stops16h 40m
Scandinavian Airlines
Tue 10/1111:30
DUB
-
IAD
2 stops34h 45m
Scandinavian Airlines
Deal found 9/6£514
Sun 4/1020:20
IAD
-
DUB
2 stops32h 50m
Scandinavian Airlines
Sun 18/1019:15
DUB
-
IAD
2 stops26h 45m
Scandinavian Airlines
Deal found 9/6£526
Sun 15/1122:30
IAD
-
DUB
1 stop12h 40m
TAP AIR PORTUGAL
Tue 24/1116:55
DUB
-
IAD
1 stop32h 40m
TAP AIR PORTUGAL
Deal found 12/6£527
Thu 15/1020:20
IAD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Sun 18/1008:45
DUB
-
IAD
2 stops37h 15m
Scandinavian Airlines
Deal found 9/6£532
Thu 3/911:44
IAD
-
DUB
1 stop15h 11m
Delta
Thu 10/905:55
DUB
-
IAD
1 stop14h 40m
Delta
Deal found 9/6£534
Fri 4/917:40
IAD
-
DUB
1 stop11h 45m
Delta
Fri 11/905:55
DUB
-
IAD
1 stop14h 40m
Delta
Deal found 9/6£537
Thu 15/1020:20
IAD
-
DUB
2 stops17h 45m
Scandinavian Airlines
Tue 20/1011:40
DUB
-
IAD
2 stops58h 20m
Scandinavian Airlines
Deal found 9/6£539

Find flight deals from Dulles Intl to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Dublin (DUB). 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 June 2026.

Round-trip from

£479

One-way from

£435

Popular in

June

Cheapest in

January

Average price

£818

Good round-trip deal

£672 or less

Good one-way deal

£410 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 9/11-13/11
  • 4 total stops
  • 62h 10m total
  • Washington, D.C. to Dublin
Search Deals
United Airlines
  • United Airlines
  • 5/8
  • Nonstop
  • 7h 05m total
  • Washington, D.C. to Dublin
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£113 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Dublin.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Dublin.
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 12/10

22:35-18:05

1 stop14h 30m

Dublin

Mon 19/10

05:30-15:10

1 stop14h 40m

£548

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sun 6/9

20:20-18:20

1 stop17h 00m

Dublin

Thu 17/9

19:50-17:00

2 stops26h 10m

£576

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 2/9

20:20-19:05

2 stops17h 45m

Dublin

Wed 9/9

11:40-17:00

2 stops34h 20m

£581

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 24/8

21:45-16:00

1 stop37h 15m

Dublin

Thu 3/9

10:40-11:35

1 stop29h 55m

£591

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 1/9

22:35-10:40

Nonstop7h 05m

Dublin

Wed 9/9

05:55-16:05

1 stop15h 10m

£602
Fastest return journey

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sun 15/11

22:20-10:20

Nonstop7h 00m

Dublin

Tue 24/11

12:05-15:20

Nonstop8h 15m

£602

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 25/8

19:15-07:20

Nonstop7h 05m

Dublin

Fri 4/9

09:20-15:24

1 stop11h 04m

£603

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 25/8

22:35-10:40

Nonstop7h 05m

Dublin

Wed 2/9

09:20-16:07

1 stop11h 47m

£603

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 23/9

13:20-23:05

1 stop28h 45m

Dublin

Sat 3/10

05:35-19:50

1 stop19h 15m

£613

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Thu 27/8

13:20-16:00

1 stop21h 40m

Dublin

Mon 31/8

05:55-19:50

1 stop18h 55m

£635

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 19 resultsSorted by cheapest first
1
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Best time to book a flight from Dulles Intl to Dublin

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

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

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Dublin may vary depending on when you book. For the best chance of a lower fare, look to book 3 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Dublin (average of £452). Flying from Washington, D.C. Dulles Intl Airport to Dublin in June is currently the most expensive (average of £819). 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 IAD to DUB?

Find hourly flight availability from Dulles Intl to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 June 2026.

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

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

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Dublin. 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 into for flights to Dublin from Washington, D.C. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl to Dublin, you will be flying into Dublin. Dublin (DUB) is just 5.7 mi from the center of the city. Dublin is the only Dublin airport and it handles 14 inbound flights from Washington, D.C. Dulles Intl per day. 0 airlines have flights to Dublin from Washington, D.C. Dulles Intl on a regular basis.

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

    TAP AIR PORTUGAL, Scandinavian Airlines, and United Airlines can get you from Washington, D.C. Dulles Intl Airport to Dublin in just under 14h 30m. Your travel time can differ by up to 5h 45m. Washington, D.C. Dulles Intl Airport and Dublin are separated by a distance of 3393 mi. This flight may include one or multiple stops.

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. Dulles Intl Airport to Dublin consider choosing Qatar Airways (93%), American Airlines (93%) or Aer Lingus (93%) as they are the most reliable in getting you off to your destination on time.

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

    Looking for the cheapest flight from Washington, D.C. Dulles Intl Airport to Dublin? While on average our users pay £636, our data indicates the cheapest price to be £336. The most popular route (Washington, D.C. Dulles Intl - Dublin), is priced around £675.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Dublin 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 Washington, D.C. Dulles Intl Airport to Dublin?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Dublin (average of £452). Flying from Washington, D.C. Dulles Intl Airport to Dublin in June is currently the most expensive (average of £819). 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

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