Cheap flights from Washington, D.C. Dulles Intl Airport to Dublin from $260

In general, February is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $619. If you’re not able to fly to Dublin in February, then April is your next best option. Flight prices from Washington, D.C. Dulles Intl Airport to Dublin during April average around $646.

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Dublin is on a Wednesday. Travelers who choose to depart for Dublin on a Wednesday will often find tickets for as low as $887. Flights from Washington, D.C. Dulles Intl Airport to Dublin on a Saturday will generally be more expensive and average around $962. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the evening is the cheapest time of day to fly from Washington, D.C. Dulles Intl Airport to Dublin when you can find flight prices for as low as $911. Flying to Dublin in the evening is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $924.

Fly from Washington, D.C. Dulles Intl to Dublin for the best Washington, D.C. Dulles Intl - Dublin flight prices

You are more likely to see cheaper flights to Dublin from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around $814 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from Washington, D.C. Dulles Intl Airport for as low as $724 on momondo.

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl Airport to Dublin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Washington, D.C. Dulles Intl Airport to Dublin.

As of October 2026, prices for Washington, D.C. Dulles Intl Airport to Dublin flights are approximately 5% cheaper when compared to flights at the same time last year.

Icelandair and Aer Lingus are the most popular carriers operating from Washington, D.C. Dulles Intl to Dublin

Aer Lingus, United Airlines and Icelandair are the top three most popular airlines that fly to Dublin from Washington, D.C. Dulles Intl Airport according to our data. Aer Lingus is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Dublin. Keep in mind that there are 7 different airlines that fly to Dublin on a routine basis, so you have a few additional options to choose from.

Historically, on average around 12% of flights between Washington, D.C. and Dublin have experienced a delay on any given week. The average delay length over the past 12 months has been 181 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Aer Lingus have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

As of October 2026, there are 9 flights per day flying from Washington, D.C. Dulles Intl Airport to Dublin. The most common time of day flights depart is 11:00PM, with 88% of flights taking off in the evening.

The number of flights available between Washington, D.C. Dulles Intl Airport and Dublin is 63 per week as of October 2026. The most frequent departure day is Mon, with 19% of weekly flights leaving on this day.