Cheap flights from Dublin to Washington, D.C. from £281

The cheapest month to fly to Washington, D.C. from Dublin is in September. Flight prices, which tend to average around £137, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. in September, then you should wait until November to fly from Dublin, when ticket prices are also cheap, with an average price of £273.

On average, the least expensive day to fly to Washington, D.C. from Dublin is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £590. However, this price may fluctuate depending on the airline, the season, and holidays. 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 £679.

In the afternoon is the cheapest time of day to fly from Dublin to Washington, D.C. when you can find flight prices for as low as £536. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Washington, D.C. are more costly in the morning, with an average ticket price of £644. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 £490 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 £387 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 50% 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 27% cheaper when compared to flights at the same time last year.

JetBlue, TAP AIR PORTUGAL, and Aer Lingus are the most popular carriers operating from Dublin to Washington, D.C.

Aer Lingus, British Airways and United Airlines are the top three most popular airlines that fly to Washington, D.C. from Dublin according to our data. Aer Lingus is the first choice among our users, with 56% of people opting to fly with this airline when travelling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. 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 157 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.

13 flights are operational daily from Dublin to Washington, D.C. as of July 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 July 2026, there are 95 flights per week flying from Dublin to Washington, D.C.. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.