Cheap flights from Ireland to District of Columbia from $373

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 $181. If you don’t want to visit District of Columbia in September, then you should wait until November to fly from Ireland, when ticket prices are also cheap, with an average price of $361.

The cheapest day to depart on your flight to District of Columbia is on a Tuesday when prices can be found for as low as $713. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday 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 $916.

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 $705 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 $844. 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 $644 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 $502 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.

Aer Lingus, JetBlue, and British Airways are the most popular carriers operating from Ireland to District of Columbia

Aer Lingus, United Airlines and Icelandair are the top three most popular airlines that fly to District of Columbia from Ireland according to our data. Aer Lingus is the first choice among our users, with 70% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 3 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

The number of flights available between Ireland and District of Columbia is 14 per day as of June 2026. The most frequent departure time is 12:00PM, with 85% of daily flights leaving in the afternoon.

As of June 2026, 98 flights take off from Ireland and land in District of Columbia each week. The most common flight departure day for this route is Thu, with 15% of weekly flights taking off on this day.