The month of November is, on average, the cheapest month to fly to Washington from Ireland, with most prices found around 317€. If you don’t want to visit Washington in November, then you should wait until February to fly from Ireland, when ticket prices are also cheap, with an average price of 338€.
We recommend purchasing flights from Ireland to Washington 56 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to Washington for 428€. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington from Ireland for as low as 277€ on momondo.
On average, the least expensive day to fly to Washington from Ireland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as 416€. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Washington on Monday is 479€.
According to our data, the cheapest time of day to fly to Washington is in the afternoon. momondo users have found flights departing from Ireland to Washington in the afternoon for as low as 437€. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Washington, so prices are often more expensive at around 449€ per ticket.