Cheap flights from Ireland to Washington from $361

The month of September is, on average, the cheapest month to fly to State of Washington from Ireland, with most prices found around $429. If you aren’t able to travel to State of Washington during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $430.

The cheapest day to depart from Ireland to State of Washington is on a Friday. Travelers who choose to depart for State of Washington on a Friday will often find tickets for as low as $618. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to State of Washington for around $1,226.

Fly from Dublin to Seattle/Tacoma Intl for the best Ireland - Washington flight prices

You are more likely to see cheaper flights to State of Washington from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $724 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Ireland for as low as $606 on momondo.

There are 3 cabin classes available to choose from on Ireland to State of Washington 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 40% on your flight if you consider stops on a Ireland to State of Washington flight.

The number of flights available between Ireland and State of Washington is 2 per day as of April 2026. The most frequent departure time is 3:00PM, with 100% of daily flights leaving in the afternoon.

As of April 2026, 15 flights take off from Ireland and land in State of Washington each week. The most common flight departure day for this route is Mon, with 27% of weekly flights taking off on this day.