$165 Find Cheap Flights from Chicago to Ireland - Compare and Save

The cheapest ticket to Ireland from Chicago found in the last 5 days was to Dublin, at $665 round-trip. The most popular route is from Chicago O'Hare Intl Airport (ORD) to Dublin (DUB), and the cheapest round-trip airline ticket found on this route in the last 5 days was $665.

The cheapest time of day to fly to Ireland is generally at night, when round-trip flights cost $770 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Ireland is generally in the evening, which is peak travel time and where the average cost of a ticket is $843.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $888 on average.

The cheapest month for flights from Chicago to Ireland is January, when tickets cost $516 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $968 and $807 respectively.

If your flying dates are flexible, you should consider flying to Ireland on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Chicago to Ireland. For your return ticket, we recommend flying on a Sunday and avoiding Saturdays for the best deals.

To get a below average price on the flight from Chicago to Ireland, you should book around 5 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

There are 8 airlines that fly nonstop from Chicago to Ireland. They are: American Airlines, Aer Lingus, Finnair, Iberia, Brussels Airlines, United Airlines, Lufthansa and British Airways. The cheapest price of all airlines flying this route was found with Aer Lingus at $362 for a round-trip flight to Dublin (DUB). On average, Brussels Airlines offers the best prices for nonstop flights between Chicago and Ireland.

American Airlines connects Chicago to Ireland with 21 flights per week. British Airways also offers 21 flights per week, while Aer Lingus follows with 21 flights per week.

The duration of a flight to Ireland depends on your arrival airport. The shortest routes to Ireland from Chicago are to Dublin, which takes 8h 19m, Knock, which takes 11h 30m, and Shannon, which takes 11h 54m.

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

The earliest flight from Chicago to Ireland departs at 3:45 pm, landing in Dublin at 5:10 am.

If you prefer to fly at night, the latest flight from Chicago to Ireland jets off at 10:20 pm and lands in Dublin at 11:50 am.