Cheap flights from Dublin to Washington, D.C. from €326

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 €412. 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 September instead. Flights to Washington, D.C. Dulles Intl Airport in September, while not as cheap as those in November, still average around €459.

According to our data, Tuesday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from Dublin. The lowest ticket price found for a Tuesday departure recently was €682. 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 €821.

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 €535. 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 €742. 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 €538 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 €434 on momondo.

You could potentially save up to 17% on your flight if you consider stops on a Dublin to Washington, D.C. Dulles Intl Airport flight.

As of May 2026, prices for Dublin to Washington, D.C. Dulles Intl Airport flights are approximately 67% more expensive when compared to flights at the same time last year.

Historically, on average around 15% 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 152 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the morning 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. Friday 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.

Lisbon (LIS) was the most common stop: 33% of momondo users choosing one-stop flights on this route connected there.

Flights via Lisbon (LIS) offer the lowest average return price of €329.

Flights connecting via Copenhagen (CPH) have the shortest average one-way travel time: 12h 19m.

Lisbon (LIS) has the shortest average stopover time for this route: 2h 50m.

The number of flights available between Dublin and Washington, D.C. Dulles Intl Airport is 13 per day as of May 2026. The most frequent departure time is 12:00, with 85% of daily flights leaving in the afternoon.

As of May 2026, there are 95 flights per week flying from Dublin to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Thu, with 16% of flights taking off on this day.