Cheap flights from Dublin to District of Columbia from $324

In general, September is the cheapest month to fly from Dublin to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $504. If you don’t want to visit District of Columbia in September, then you should wait until February to fly from Dublin, when ticket prices are also cheap, with an average price of $529.

The cheapest day to depart on your flight to District of Columbia is on a Wednesday when prices can be found for as low as $695. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from Dublin because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $879.

Flying to District of Columbia from Dublin in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $647 when looking at flights departing in the afternoon. Flights to District of Columbia are more costly in the morning, with an average ticket price of $823. 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 - District of Columbia flight prices

You are more likely to see cheaper flights to District of Columbia from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $620 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from Dublin for as low as $449 on momondo.

There are 3 cabin classes available to choose from on Dublin to District of Columbia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

As of March 2026, there are 12 flights per day flying from Dublin to District of Columbia. The most common time of day flights depart is 12:00PM, with 100% of flights taking off in the afternoon.

84 flights are operational weekly from Dublin to District of Columbia as of March 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.