Cheap flights from Dublin to Washington, D.C. from €315

The cheapest month to fly to Washington, D.C. from Dublin is in November. Flight prices, which tend to average around €455, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Washington, D.C. from Dublin during February instead. Flights to Washington, D.C. in February, while not as cheap as those in November, still average around €473.

The cheapest day to depart from Dublin to Washington, D.C. is on a Wednesday. Travellers who choose to depart for Washington, D.C. on a Wednesday will often find tickets for as low as €704. 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. on Sunday is €816.

Flying to Washington, D.C. from Dublin in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as €561 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are €782 on average. Flights to Washington, D.C. from Dublin in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Washington, D.C. from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around €576 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. from Dublin for as low as €402 on momondo.

There are 2 cabin classes available to choose from on Dublin to Washington, D.C. 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 20% on your flight if you consider stops on a Dublin to Washington, D.C. flight.

As of July 2026, prices for Dublin to Washington, D.C. flights are approximately 28% cheaper when compared to flights at the same time last year.

Historically, on average around 14% 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 151 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 13% of their flights experiencing any sort of delay.

Copenhagen (CPH) was the most common stop: 50% of momondo users choosing one-stop flights on this route connected there.

Flights via Copenhagen (CPH) offer the lowest average return price of €355.

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 12h 10m.

Reykjavik (KEF) has the shortest average stopover time for this route: 2h 00m.

As of July 2026, 14 flights take off from Dublin and land in Washington, D.C. each day. The most common flight departure time for this route is 12:00, with 85% of daily flights taking off in the afternoon.

99 flights are operational weekly from Dublin to Washington, D.C. as of July 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.