$236 Find Cheap Flights from Illinois to Ireland

1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Ireland

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Useful Info
Useful Info

Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight$236
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Chicago O'Hare Airport to Dublin

FAQs for booking flights from Illinois to Ireland

  • How does KAYAK find such low prices on flights from Illinois to Ireland?

    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.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket 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.

  • What is the Hacker Fare option on flights from Illinois to Ireland?

    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.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Ireland?

    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.

  • Which is the cheapest airport to fly into in Ireland?

    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 $564.

  • What is the cheapest day to fly to Ireland?

    Based on KAYAK data, the cheapest day to fly to Ireland is Tuesday where round-trip tickets can be as cheap as $728. On the other hand, the most expensive day to fly is Friday, where round-trip prices are $790 on average.

  • What is the cheapest time of day to fly to Ireland?

    The cheapest time of day to fly to Ireland is generally in the morning, when round-trip flights cost $714 on average. Morning departures are around 5% cheaper than evening flights, on average. The most expensive time of day to fly to Ireland is generally at night, which is peak travel time and where the average cost of a ticket is $769.

  • What is the cheapest flight to Ireland?

    The cheapest ticket to Ireland from Illinois found in the last 72 hours was to Dublin, at $585 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 72 hours was $585.

  • What is the cheapest month to fly from Illinois to Ireland?

    The cheapest month for flights from Illinois to Ireland is November, when tickets cost $523 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $959 and $862 respectively.

  • How far in advance should I book a flight from Illinois to Ireland?

    To get a below average price on the flight from Illinois to Ireland, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

  • How long is the flight to Ireland?

    An average nonstop flight from Illinois to Ireland takes 14h 37m, 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.

  • What are the most popular destinations in Ireland?

    Based on KAYAK flight searches, the most popular destination is Dublin (93% of total searches to Ireland). The next most popular destinations are Shannon (5%) and Cork (2%). Searches for flights to Knock (0%), to Milltown (Kerry) (0%) and to Donegal (0%) are also popular.

Book cheap flights from Illinois to Ireland

Recent round-trip flight deals

10/21Tue
1 stopScandinavian Airlines
17h 00mORD-DUB
11/5Wed
1 stopScandinavian Airlines
34h 15mDUB-ORD
$385
9/30Tue
1 stopScandinavian Airlines
17h 00mORD-DUB
10/22Wed
1 stopScandinavian Airlines
27h 05mDUB-ORD
$389
10/22Wed
1 stopTAP AIR PORTUGAL
24h 05mORD-DUB
10/28Tue
1 stopTAP AIR PORTUGAL
28h 00mDUB-ORD
$433
9/22Mon
1 stopTAP AIR PORTUGAL
17h 55mORD-DUB
9/30Tue
1 stopTAP AIR PORTUGAL
27h 20mDUB-ORD
$438
8/13Wed
nonstopAer Lingus
7h 25mORD-DUB
8/21Thu
nonstopAer Lingus
8h 20mDUB-ORD
$452
8/12Tue
nonstopIberia
7h 20mORD-DUB
8/22Fri
nonstopIberia
8h 00mDUB-ORD
$463
8/12Tue
1 stopAmerican Airlines
12h 15mORD-DUB
8/22Fri
nonstopAmerican Airlines
8h 00mDUB-ORD
$480
8/12Tue
1 stopAmerican Airlines
12h 15mORD-DUB
8/22Fri
1 stopAmerican Airlines
13h 23mDUB-ORD
$490
8/5Tue
nonstopIberia
7h 15mORD-DUB
8/19Tue
1 stopIberia
14h 22mDUB-ORD
$497
8/15Fri
nonstopAer Lingus
7h 25mORD-DUB
8/22Fri
nonstopAer Lingus
8h 25mDUB-ORD
$502

Search by stops

Search by airline

Search by price

Recent one-way flight deals

8/14Thu
1 stopTAP AIR PORTUGAL
21h 15mORD-DUB
$236
7/19Sat
1 stopTAP AIR PORTUGAL
23h 50mORD-DUB
$250
7/13Sun
2 stops
34h 55mORD-DUB
$273
7/6Sun
2 stops
33h 00mMDW-DUB
$273
10/20Mon
1 stopJetBlue
12h 45mORD-DUB
$335
10/27Mon
1 stopIcelandair
9h 45mORD-DUB
$336
9/16Tue
1 stopScandinavian Airlines
17h 00mORD-DUB
$368
8/1Fri
1 stopIcelandair
11h 50mORD-DUB
$379
5/18Sun
1 stopScandinavian Airlines
16h 00mORD-DUB
$433
7/1Tue
1 stopJetBlue
14h 07mORD-DUB
$468

Search by stops

Search by airline

Search by price

Last minute flights from Illinois to Ireland

Last minute flight, train and bus deals

5/5Mon
multi-stopScandinavian Airlines
16h 00mORD-DUB
5/14Wed
multi-stopScandinavian Airlines
29h 20mDUB-ORD
$737
5/5Mon
multi-stopScandinavian Airlines
16h 00mORD-DUB
5/21Wed
multi-stopScandinavian Airlines
36h 40mDUB-ORD
$748
5/3Sat
multi-stop
17h 15mORD-DUB
5/7Wed
multi-stop
31h 05mDUB-ORD
$754
5/3Sat
multi-stop
17h 15mORD-DUB
5/7Wed
multi-stop
31h 05mDUB-ORD
$755
5/5Mon
nonstopAer Lingus
7h 25mORD-DUB
5/14Wed
nonstopAer Lingus
8h 25mDUB-ORD
$835
5/5Mon
multi-stopAer Lingus
9h 36mORD-DUB
5/16Fri
nonstopAer Lingus
8h 20mDUB-ORD
$840
5/5Mon
multi-stopAmerican Airlines
18h 05mORD-SNN
6/6Fri
multi-stopAmerican Airlines
13h 05mSNN-ORD
$859
5/5Mon
multi-stopKLM
12h 39mMDW-DUB
5/21Wed
multi-stopKLM
16h 27mDUB-MDW
$868
5/5Mon
multi-stopAmerican Airlines
11h 45mORD-SNN
6/6Fri
multi-stopAmerican Airlines
18h 29mSNN-ORD
$870
5/5Mon
multi-stopKLM
13h 57mMDW-DUB
5/14Wed
multi-stopKLM
13h 45mDUB-MDW
$908

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to Ireland

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.