Cheap flights from Washington, D.C. to Dublin from €149

If you aren’t able to travel during the month of November, then book flights to Dublin from Washington, D.C. during October instead. Flights to Dublin in October, while not as cheap as those in November, still average around €126.

Our data shows that the cheapest Washington, D.C. to Dublin flights are usually those with departure times in the evening. Our users have found flights to Dublin in the evening for as low as €685. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are €686 on average. Flights to Dublin from Washington, D.C. in the afternoon 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. - Dublin flight prices

You are more likely to see cheaper flights to Dublin from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around €666 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. for as low as €587 on momondo.

There is only 1 cabin class available to choose from on Washington, D.C. to Dublin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 44% on your flight if you consider stops on a Washington, D.C. to Dublin flight.

Historically, on average around 16% 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 187 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.

Saturday 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 12% of their flights experiencing any sort of delay.

The number of flights available between Washington, D.C. and Dublin is 14 per day as of June 2026. The most frequent departure time is 17:00, with 63% of daily flights leaving in the evening.

The number of flights available between Washington, D.C. and Dublin is 101 per week as of June 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.