The cheapest times to fly from DUB to IAD are

  • September 17th to April 1st (except the weeks of September 24th and October 22nd)

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 DUB to IAD is mid January. Prices can be as high as $861 for Saturday flights during early August, or as low as $332 for Monday flights around mid January.


When to Fly to Washington

Flying from Dublin (DUB) to Washington, DC (IAD) will usually cost between $358 to $659 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid January with an average ticket price of $360. Due to high demand the most expensive time to fly is early August, with an average price of $746. Planning your trip to low-cost times can easily save you $387 on economy flights and even more on first-class flights. Generally, any price below $410 can be considered a good price for a round-trip DUB to IAD flight.

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

DUB to IAD Flight Prices

Compared to other flights, the DUB to IAD flight is much cheaper than the average and costs less than the average flight leaving from Dublin. The average price per mile (for a direct flight) is $0.08, which is far below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to IAD, and Wednesday the cheapest day to fly back into DUB. 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 Monday and returning a week later will cost an average of $421. Return trip prices are from the IAD to DUB 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 DUB to IAD 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 Questions Answered

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

Which airlines fly this route?

You can find 21 major airlines flying this route most often: Aer Lingus, Aeroflot, Air Canada, Air France, Alaska, American, Austrian, British Airways, Delta, Finnair, Iberia, Icelandair, Kenya Airways, KLM, Lufthansa, SAS, SWISS, Tap Air Portugal, Turkish Airlines, United, Virgin Atlantic, and potentially more during busy seasons.

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

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

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

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

How many flights go between Dublin and Washington, DC?

It depends on the day of the week and the date, but a typical day might have around 75 available flights from DUB to IAD.


Airport Location Info


Departing Airport

Origination codeDUB
Origination airport nameDublin Airport

Return Airport

Destination codeIAD
Destination airport nameWashington Dulles International Airport
CityWashington, DC
Countrythe United States


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.