Cheap flights from Dublin to Washington, D.C. from €400

The month of November is, on average, the cheapest month to fly to Washington, D.C. Dulles Intl Airport from Dublin, with most prices found around €467. If you aren’t able to travel during the month of November, then book flights to Washington, D.C. Dulles Intl Airport from Dublin during February instead. Flights to Washington, D.C. Dulles Intl Airport in February, while not as cheap as those in November, still average around €507.

According to our data, Wednesday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from Dublin. The lowest ticket price found for a Wednesday departure recently was €715. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Washington, D.C. Dulles Intl Airport on Sunday is €815.

According to our data, the cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is in the afternoon. momondo users have found flights departing from Dublin to Washington, D.C. Dulles Intl Airport in the afternoon for as low as €570. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the morning because they tend to be around €796. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around €611 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Dublin for as low as €495 on momondo.

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

Historically, on average around 13% of flights between Dublin and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 147 minutes.

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

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

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

The number of flights available between Dublin and Washington, D.C. Dulles Intl Airport is 8 per day as of October 2026. The most frequent departure time is 12:00, with 86% of daily flights leaving in the afternoon.

As of October 2026, there are 62 flights per week flying from Dublin to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Mon, with 19% of flights taking off on this day.