Cheap flights from Washington, D.C. Dulles Intl Airport to Dublin from €243

If you aren’t able to travel during the month of January, then book flights to Dublin from Washington, D.C. Dulles Intl Airport during November instead. Flights to Dublin in November, while not as cheap as those in January, still average around €541.

Our data shows that the cheapest Washington, D.C. Dulles Intl Airport to Dublin flights are usually those with departure times in the afternoon. Our users have found flights to Dublin in the afternoon for as low as €578. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are €693 on average. Flights to Dublin from Washington, D.C. Dulles Intl Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 €684 when searching weeks before you fly. 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 €623 on momondo.

There is only 1 cabin class 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.

As of September 2026, prices for Washington, D.C. Dulles Intl Airport to Dublin flights are approximately 52% cheaper when compared to flights at the same time last year.

Historically, on average around 14% 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 191 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the evening 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. Thursday 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 9% of their flights experiencing any sort of delay.

The number of flights available between Washington, D.C. Dulles Intl Airport and Dublin is 13 per day as of September 2026. The most frequent departure time is 17:00, with 65% of daily flights leaving in the evening.

94 flights are operational weekly from Washington, D.C. Dulles Intl Airport to Dublin as of September 2026. The most popular departure day for this route is Thu, with 16% of flights per week taking off on this day.