$368 Find Cheap Flights from Ireland to Chicago - Compare and Save

Based on KAYAK data, the cheapest day to fly to Chicago is Sunday where round-trip tickets can be as cheap as $740. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $948 on average.

The cheapest month for flights to Chicago is November, where tickets cost $476 on average for return flights. On the other hand, the most expensive months are August and July, where the average cost of tickets from Ireland is $856 and $832 respectively. For one-way flights, the best month to travel is February with an average price of $489.

The cheapest time of day to fly to Chicago is generally in the evening, when round-trip flights cost $787 on average. The most expensive time of day to fly to Chicago is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $890.

If you’re looking for cheap airfare to Chicago, 25% of our users found tickets to Chicago for the following prices or less: From Dublin $778 round-trip.

To get a below average price, you should book around 3 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Chicago is Chicago Greater Rockford Airport (RFD), with an average flight price of $176.

The most popular airline among KAYAK users flying to Chicago is Aer Lingus, followed by United Airlines.

Of the 3 airlines that fly to Chicago, Aer Lingus offers the most flights, with around 14 per week, followed by United Airlines with 14 flights per week.

There are 3 airports in Chicago: Chicago O'Hare Airport (ORD), Chicago Midway Airport (MDW) and Chicago Greater Rockford Airport (RFD). The busiest airport is Chicago O'Hare Airport (ORD), with 94% of all flights arriving there.

The duration of your flight to Chicago depends on your departure and arrival airports. Obviously, any flights that include a layover will also be longer. The most popular routes to Chicago on KAYAK are from Dublin, which takes 8h 00m, Shannon, which takes 8h 20m, Cork, which takes 12h 05m, and Milltown (Kerry), which takes 14h 50m.

There are around 4,327 direct flights from within Ireland to Chicago every day. Most flights depart in the morning, with 49% of flights departing in the morning.

Each week there are around 30,286 direct flights from within Ireland to Chicago. The most common day for departures is Sunday, with 15% of flights taking off on this day.

There are not any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to Chicago. Instead, there are 156 long-haul flights (6-12 hour flight duration), with the most arriving from Dublin.

From Ireland, there are direct flights to Chicago from 2 cities. The city with the most direct flights is Dublin, with 138 direct flights each week.