Cheap flights from Washington, D.C. to Dublin from €207

If you aren’t able to travel during the month of January, then book flights to Dublin from Washington, D.C. during October instead. Flights to Dublin in October, while not as cheap as those in January, still average around €512.

Our data shows that Tuesday is the least expensive day to fly to Dublin. Tickets to fly out on this day can be as low as €602. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around €679. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.

Our data shows that the cheapest Washington, D.C. 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 €605. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are €614 on average. Flights to Dublin from Washington, D.C. 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. - 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 €598 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 €522 on momondo.

There are 2 cabin classes 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 36% on your flight if you consider stops on a Washington, D.C. to Dublin flight.

As of February 2026, prices for Washington, D.C. to Dublin flights are approximately 143% more expensive when compared to flights at the same time last year.

Historically, on average around 18% 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 171 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 14% of their flights experiencing any sort of delay.

The number of flights available between Washington, D.C. and Dublin is 5 per day as of February 2026. The most frequent departure time is 17:00, with 100% of daily flights leaving in the afternoon.

The number of flights available between Washington, D.C. and Dublin is 35 per week as of February 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.