Cheap flights from Washington, D.C. Dulles Intl Airport to Ireland from €221

The month of November is another great option to travel to Ireland, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around €534.

In the afternoon is the cheapest time of day to fly from Washington, D.C. Dulles Intl Airport to Ireland when you can find flight prices for as low as €582. Flying to Ireland in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Ireland is in the evening when prices are around €676.

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

You are more likely to see cheaper flights to Ireland from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €671 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Washington, D.C. Dulles Intl Airport for as low as €574 on momondo.

There is only 1 cabin class available to choose from on Washington, D.C. Dulles Intl Airport to Ireland 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. Dulles Intl Airport to Ireland flight.

Historically, on average around 16% of flights between Washington, D.C. and Ireland 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. 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 11% of their flights experiencing any sort of delay.

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

The number of flights available between Washington, D.C. Dulles Intl Airport and Ireland is 93 per week as of August 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.