Cheap flights from Ireland to District of Columbia from $308

In general, September is the cheapest month to fly from Ireland to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $509. If you don’t want to visit District of Columbia in September, then you should wait until October to fly from Ireland, when ticket prices are also cheap, with an average price of $521.

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 Ireland 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 Ireland in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $659 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 $831. 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 Ireland - District of Columbia flight prices

You are more likely to see cheaper flights to District of Columbia from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $622 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 Ireland for as low as $503 on momondo.

There are 3 cabin classes available to choose from on Ireland 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.

The number of flights available between Ireland and District of Columbia is 9 per day as of March 2026. The most frequent departure time is 12:00PM, with 100% of daily flights leaving in the afternoon.

As of March 2026, 68 flights take off from Ireland and land in District of Columbia each week. The most common flight departure day for this route is Tue, with 18% of weekly flights taking off on this day.