Cheap flights from Dublin to Washington, D.C. from £445

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 £359. 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 £399.

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 £580. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Wednesday is the most expensive day to depart from Dublin because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £655.

The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is in the afternoon when flights can be purchased for as low as £510. In contrast, the most expensive time of day to depart to Washington, D.C. Dulles Intl Airport is in the morning when prices are around £627.

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 £468 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 £377 on momondo.

No. A direct flight is the cheapest option for a flight between Dublin to Washington, D.C. Dulles Intl Airport.

As of April 2026, prices for Dublin to Washington, D.C. Dulles Intl Airport flights are approximately 19% more expensive when compared to flights at the same time last year.

British Airways, Icelandair, and KLM are the most popular carriers operating from Dublin to Washington, D.C. Dulles Intl

Aer Lingus, United Airlines and Lufthansa are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Dublin according to our data. Aer Lingus is the first choice among our users, with 68% of people opting to fly with this airline when travelling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 3 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

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.

12 flights are operational daily from Dublin to Washington, D.C. Dulles Intl Airport as of April 2026. The most popular departure time for this route is 12:00, with 85% of flights per day taking off in the afternoon.

As of April 2026, 86 flights take off from Dublin and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.