Cheap flights from Dublin to Washington, D.C. from £298

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 £355. 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 February instead. Flights to Washington, D.C. Dulles Intl Airport in February, while not as cheap as those in November, still average around £402.

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 £581. 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 £676.

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 £528. 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 £648.

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 £491 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 £338 on momondo.

There are 3 cabin classes available to choose from on Dublin to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport flight.

As of September 2026, prices for Dublin to Washington, D.C. Dulles Intl Airport flights are approximately 68% more expensive when compared to flights at the same time last year.

Historically, on average around 13% 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 146 minutes.

Generally, flights departing in the evening 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. 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 12% of their flights experiencing any sort of delay.

13 flights are operational daily from Dublin to Washington, D.C. Dulles Intl Airport as of September 2026. The most popular departure time for this route is 12:00, with 84% of flights per day taking off in the afternoon.

As of September 2026, 92 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 15% of weekly flights taking off on this day.