The cheapest times to fly from IAD to DUB are

  • January 1st to March 25th
  • April 30th to June 3rd (except the week of May 14th)
  • October 1st to December 16th (except the week of October 8th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from IAD to DUB is mid February. Prices can be as high as $1145 for Saturday flights during early August, or as low as $450 for Wednesday flights around mid February.


When to Fly to Dublin

Flying from Washington, DC (IAD) to Dublin (DUB) will usually cost between $480 to $942 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid February with an average ticket price of $492. Due to high demand the most expensive time to fly is early August, with an average price of $977. Planning your trip to low-cost times can easily save you $485 on economy flights and even more on first-class flights. Generally, any price below $626 can be considered a good price for a round-trip IAD to DUB flight.

See below for a graph of average weekly prices for the IAD to DUB route. All prices are for round-trip tickets in USD.

IAD to DUB Flight Prices

Compared to other flights, the IAD to DUB flight is cheaper than the average and costs less than the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.11, which is far below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to fly to DUB, and Monday the cheapest day to fly back into IAD. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $83 (11%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $629. Return trip prices are from the DUB to IAD flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from IAD to DUB can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 7 hour 5 minutes may be realistic.


Flight Hacking IAD to DUB

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from IAD to DUB — but Champion Traveler does!

Hack #1: London (IAD > LHR > DUB)

  • Price for both tickets: $610
  • Average savings: $16 (2.56%)

See IAD to LHR flights


Flight Questions Answered

Still have questions about flying from IAD to DUB? We’ve got answers.

Which airlines fly this route?

You can find 20 major airlines flying this route most often: Aer Lingus, Aeroflot, Air Canada, Air France, Alaska, American, Austrian, British Airways, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, SAS, SWISS, Tap Air Portugal, Turkish Airlines, United, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Dublin Airport to Washington Dulles International Airport?

The distance between the two airports is roughly 3394 miles or 5462 kilometers.

How long does it take to fly from IAD to DUB?

The real-world flight time for a nonstop IAD to DUB flight is about 7 hour 5 minutes.

How many flights go between Washington, DC and Dublin?

It depends on the day of the week and the date, but a typical day might have around 64 available flights from IAD to DUB.


Airport Location Info


Departing Airport

Origination code IAD
Origination airport name Washington Dulles International Airport
City Washington, DC
Country the United States
Latitude 38.9
Longitude -77.5

Return Airport

Destination code DUB
Destination airport name Dublin Airport
City Dublin
Country Ireland
Latitude 53.4
Longitude -6.3


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.