Cheap flights from Dublin to Chicago from $428

The month of September is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Dublin averaging around $619.

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Friday when prices can be found for as low as $717. 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 Dublin because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $991.

Flying to Chicago O'Hare Intl Airport from Dublin in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $778 when looking at flights departing in the afternoon. Try not to purchase tickets in the morning because they tend to be around $831. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $692 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Dublin for as low as $515 on momondo.

There are 3 cabin classes available to choose from on Dublin to Chicago O'Hare Intl Airport 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 Dublin to Chicago O'Hare Intl Airport.

As of November 2026, prices for Dublin to Chicago O'Hare Intl Airport flights are approximately 15% cheaper when compared to flights at the same time last year.

Historically, on average around 10% of flights between Dublin and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 165 minutes.

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

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, Aer Lingus have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

As of November 2026, there are 12 flights per day flying from Dublin to Chicago O'Hare Intl Airport. The most common time of day flights depart is 10:00AM, with 70% of flights taking off at noon.

85 flights are operational weekly from Dublin to Chicago O'Hare Intl Airport as of November 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.