Cheap flights from Chicago to Dublin from €221

If you aren’t able to travel during the month of January, then book flights to Dublin from Chicago during February instead. Flights to Dublin in February, while not as cheap as those in January, still average around €453.

Our data shows that Thursday is the least expensive day to fly to Dublin. Tickets to fly out on this day can be as low as €556. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around €756. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.

Our data shows that the cheapest Chicago to Dublin flights are usually those with departure times in the evening. Our users have found flights to Dublin in the evening for as low as €565. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are €659 on average. Flights to Dublin from Chicago in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from Chicago O'Hare Intl to Dublin for the best Chicago - Dublin flight prices

You are more likely to see cheaper flights to Dublin from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around €584 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from Chicago for as low as €551 on momondo.

There is only 1 cabin class available to choose from on Chicago to Dublin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Chicago to Dublin.

As of March 2026, prices for Chicago to Dublin flights are approximately 31% cheaper when compared to flights at the same time last year.

Historically, on average around 22% of flights between Chicago and Dublin have experienced a delay on any given week. The average delay length over the past 12 months has been 153 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 19% of their flights experiencing any sort of delay.

As of March 2026, there are 13 flights per day flying from Chicago to Dublin. The most common time of day flights depart is 19:00, with 66% of flights taking off in the evening.

As of March 2026, 94 flights take off from Chicago and land in Dublin each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.