$171 Find Cheap Flights from Illinois to Ireland - Compare and Save

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Ireland.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Ireland is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Illinois to Ireland with an airline and back with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Illinois to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Illinois and Ireland are connected by different airlines. The airlines that fly that route the most regularly are Aer Lingus (28 flights per week), American Airlines (21 flights per week), and British Airways (21 flights per week).

There are 6 airports in Ireland. The busiest airport is Dublin Airport (DUB), with 86% of all flights arriving there.

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Ireland is Dublin Airport (DUB), with an average flight price of $489.

Based on KAYAK data, the cheapest day to fly to Ireland is Wednesday where round-trip tickets can be as cheap as $749. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $868 on average.

The cheapest time of day to fly to Ireland is generally at night, when round-trip flights cost $766 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 $841.

The cheapest ticket to Ireland from Illinois found in the last 5 days was to Dublin, at $652 round-trip. The most popular route is 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 $652.

The cheapest month for flights from Illinois to Ireland is January, when tickets cost $421 (return) on average. On the other hand, the most expensive months are June and August, when the average cost of round-trip tickets is $639 and $568 respectively.

To get a below average price on the flight from Illinois to Ireland, you should book around 5 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

From Illinois, there are direct flights to Ireland from 1 city. This city is Chicago and there are 168 direct flights each week.

There are around 24 direct flights from within Illinois to Ireland every day. Most flights (54%) depart in the evening.

Each week there are around 168 direct flights from within Illinois to Ireland. The most common day for departures is Monday, with 14% of flights taking off on this day.

An average nonstop flight from Illinois to Ireland takes 13h 31m, covering a distance of 3720 miles. The shortest route is Chicago O'Hare Intl Airport (ORD) to Dublin (DUB) with an average flight time of 7h 20m.

There are not any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to Ireland. Instead, there are 168 long-haul flights (6-12 hour flight duration), with the most arriving from Chicago.

Based on KAYAK flight searches, the most popular destination is Dublin (93% of total searches to Ireland). The next most popular destinations are Shannon (4%) and Cork (1%). Searches for flights to Milltown (Kerry) (0%), to Knock (0%) and to Donegal (0%) are also popular.