€193 Find Cheap Flights from Chicago to Ireland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Ireland departing on 19/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Best Ireland Flight Deals from Chicago

Cheapest return prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin2 stops€359
Cork
Cork1 stop€403
Shannon
Shannon1 stop€401
Knock
Knock1 stop€582
Donegal
Donegal2 stops€803
Dublin
Dublin2 stops€359
Cork
Cork1 stop€403
Shannon
Shannon1 stop€401
Knock
Knock1 stop€582
Donegal
Donegal2 stops€803

Cheap Flights from Chicago to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Chicago to Ireland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Chicago to Ireland

Sat, 17 Jan - Sat, 24 Jan
Scandinavian Airlines Logo
19:20 - 11:45
ORD
-
DUB
34h 25m2 stops
Scandinavian Airlines Logo
10:10 - 16:45
DUB
-
ORD
12h 35m1 stop
€359Scandinavian Airlines
Thu, 26 Feb - Sun, 8 Mar
Scandinavian Airlines Logo
19:20 - 18:20
ORD
-
DUB
17h 00m1 stop
Scandinavian Airlines Logo
10:10 - 17:45
DUB
-
ORD
12h 35m1 stop
€359Scandinavian Airlines
Sat, 31 Jan - Sun, 15 Feb
Scandinavian Airlines Logo
19:20 - 18:20
ORD
-
DUB
17h 00m1 stop
Scandinavian Airlines Logo
17:15 - 16:45
DUB
-
ORD
29h 30m2 stops
€360Scandinavian Airlines
Mon, 12 Jan - Fri, 16 Jan
Icelandair Logo
18:30 - 10:15
ORD
-
DUB
9h 45m1 stop
Icelandair Logo
11:30 - 17:20
DUB
-
ORD
11h 50m1 stop
€365Icelandair
Sun, 18 Jan - Tue, 27 Jan
Lufthansa Logo
21:50 - 17:10
ORD
-
DUB
13h 20m1 stop
Lufthansa Logo
05:00 - 15:20
DUB
-
ORD
16h 20m1 stop
€366Lufthansa
Wed, 28 Jan - Thu, 5 Feb
Lufthansa Logo
21:50 - 17:10
ORD
-
DUB
13h 20m1 stop
Lufthansa Logo
05:00 - 13:25
DUB
-
ORD
14h 25m1 stop
€367Lufthansa
Mon, 27 Apr - Wed, 6 May
American Airlines Logo
17:40 - 11:20
ORD
-
SNN
11h 40m1 stop
American Airlines Logo
21:15 - 15:55
SNN
-
ORD
24h 40m1 stop
€401American Airlines
Mon, 27 Apr - Wed, 6 May
American Airlines Logo
17:40 - 19:50
ORD
-
ORK
20h 10m1 stop
American Airlines Logo
07:20 - 18:15
ORK
-
ORD
16h 55m1 stop
€403American Airlines
Sun, 18 Jan - Tue, 27 Jan
KLM Logo
11:21 - 08:45
MDW
-
DUB
15h 24m2 stops
KLM Logo
08:50 - 17:55
DUB
-
MDW
15h 05m2 stops
€404KLM
Wed, 8 Apr - Wed, 15 Apr
KLM Logo
14:03 - 07:55
MDW
-
DUB
11h 52m1 stop
KLM Logo
10:00 - 18:45
DUB
-
MDW
14h 45m1 stop
€418KLM
Booking Insights

KAYAK's insights & trends for Chicago to Ireland flights

Get data-powered insights and trends into flights from Chicago to Ireland to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest Chicago to Ireland flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ireland from Chicago found in the last 72 hours was to Dublin, at €392 return. 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 72 hours was €392.

Can I save money by flying with a stopover from Chicago to Ireland?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at €720 on average.

What is the cheapest month to fly from Chicago to Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago to Ireland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago to Ireland is February, when tickets cost €473 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of return tickets is €743 and €704 respectively.

What’s the cheapest day of the week to fly from Chicago to Ireland?

The average price of all round-trip flights from Chicago to Ireland clicked on KAYAK for each day over the last 12 months.

When flying from Chicago to Ireland, you should consider leaving on a Thursday and avoid Saturdays if you are looking for the best rates. For your return to Chicago, you’ll find the best rates on Thursdays and the most expensive ones on Tuesdays.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago to Ireland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Chicago to Ireland, you should book around 4 weeks before departure, which saves you about 23% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight€193
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly (11% more expensive on average)
Flight from Chicago O'Hare Airport to Dublin

FAQs - booking Ireland flights

  • How do you get downtown from the Dublin Airport?

    You can take a public bus from the airport into the city of Dublin. The airport bus will take you to Sutton Station. From here, you can take another bus to your final destination. Go to Zone 15, which is close to the atrium, an attached hall to the airport. Taxis are also available for transportation from the airport into the city. The taxi stand is outside of Terminals 1 and 2.

  • What airport should I choose when flying into Ireland?

    Dublin is one of the largest cities in Ireland. It is also just a short drive from the big cities of Louth and Belfast, making this a convenient airport to fly into if you're visiting eastern or northern Ireland. If you're visiting southern Ireland, you might want to fly into Cork Airport, which is a short drive from the cities of Cork and Waterford. Shannon Airport is within close proximity of Munster.

  • Are there car rental companies at any of the airports?

    There are numerous car rental agencies at the Dublin Airport. The offices are outside of Terminal 2. At Cork Airport, the car rental agencies are located in the arrival hall. If you've flown into Shannon Airport, you can also rent a car at the airport. Again, you'll find the offices for car rental services in its arrival hall.

  • Where can I park my car at Chicago O'Hare Airport (ORD)?

    At Chicago O'Hare Airport, there is a parking lot right next to the international terminal. International Lot D is for short-term parking only. If you need long-term parking, you'll probably want to park in one of the economy lots. These are off-site, and a shuttle will take you to the airport after parking your car.

  • How does KAYAK find such low prices on flights from Chicago 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 Chicago to Ireland.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Chicago 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 Chicago 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 Chicago to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

    The cheapest time of day to fly to Ireland is generally at night, when retur flights cost €624 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 afternoon, which is peak travel time and where the average cost of a ticket is €777.

Top tips for finding cheap flights to Ireland

  • Dublin Airport (DUB) is one of the busiest airports in Ireland. Other large airports in Ireland include Cork (ORK) and Shannon Airport (SNN).
  • Book a nonstop flight to Dublin from Chicago (ORD) with Aer Lingus. If flying into other airports in Ireland, you will have one or two layovers in Frankfurt, Toronto or London.
  • Relax before leaving Dublin in one of its travel lounges. There is one outside of Terminal 1, two in Terminal 2, and another for Aer Lingus passengers only.
  • Chicago O'Hare Airport (ORD) has an on-site hotel. Book a room at the Hilton Chicago O'Hare Hotel if you have an early flight. The hotel is located directly across the street from the terminals.
  • Once you land at Dublin Airport, you can exchange currency at the Bureau of Change located in the departure and arrival halls as well as the baggage claim area. There is also a currency exchange center at Shannon Airport in the customs hall and the departure lounge.
  • Dublin Airport is about 23min from the city center. Shannon Airport is 24min from the city of Clare and Cork Airport is about 20min from the center of Cork.
  • If you're looking for something to occupy your time while waiting for your flight to leave, Chicago O'Hare Airport has an art center where you can enjoy murals, paintings and sculptures.

Reviews of the top airline flying from Chicago to Ireland

 
Need help choosing which airline to fly with from Chicago to Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
Aer LingusOverall score based on 1406 reviews
6.9Entertainment
7.4Boarding
8.0Crew
7.1Comfort
6.6Food
Airline reviews

I was not admitted to the flight!!! I need a refund for this

2.0 MediocreSvetlana, Dec 2025
CDG - DUB
Read more Aer Lingus reviews

I was not admitted to the flight!!! I need a refund for this

Well, I think we left close to on time. Crew was “eh”.

This is a bit of a rant, but I'll try to keep it civil. The flight was delayed for 2 hours with almost ZERO updates from agents. Just "there's technical issues, we don't know if or when it'll be resolved" once an hour maybe? And the gate signs, and app never updated to show the delay until it was finally resolved. So when I called Aer Lingus to see if I could rebook, I had literally the dumbest conversation with the person on the phone there where he says "It's showing your flight departed at 11:10. So it's already departed!", where I responded, "Well, it's 12:45 and I'm on the phone with you, standing in the airport, staring at the plane. So...I'm not sure what your system is saying, but we aren't in the air right now.". He said "Nothing I can do. Since it doesn't show delayed in my system, you would be charged to reschedule." Once we finally departed 2 hours late, things were going smoothly as I would expect, except in another very strange way. The stewardesses were rolling the cart down the aisle offering drinks and I asked for a water, to which they said "Sure, you can buy a bottle". I'm not sure if this is an Aer Lingus thing. Maybe something I'd expect from Ryan Air, but for a 3 hour international flight, to not have complimentary water available for customers is an absolute first, in 15 years of flying for me. I'm not upset with the plane staff at all. They were very friendly, but Aer Lingus' policies, how they handled the delay, and the unbelievable conversation with the customer service representative, leaves a lot to be desired in those areas. Also, I'm not upset about the delay. Things happen. Technical issues. But this is a place where airlines really need to clearly communicate with their customers. They also changed gates from 12N to 13N and there was no notification on any app, or announcement over the PA. End of rant. I hope they get some feedback on how to improve communication, because otherwise, they were great. And the second leg of my trip was incredibly smooth - no nickle and diming water, no communication issues. Very professional and efficient and even landed early

The folks and flights were fantastic. I unfortunately wasn’t able to order a meal that I could eat (I’m gluten free) because I got my ticket through kayak, but they tried their best to find something to help me get through the long flight and I’ll forever remember their kindness.

Flight takeoff was delayed an hour, but arrival time was not updated at the same time as departure time, so those picking me up at the other end were not alerted to the change in my arrival.

Seats are terribly cramped. I’m only 5’2” and my knees were practically in my face. No room to put a normal size bag under the seat and when the person in front of you reclined their seat your tray table was in your lap. This is the airline’s way of cramming more seats into the plane to make more money. I’ll think twice about taking Aer Lingus again since there are a few other options from Boston to the Emerald Isle.

Couldn’t check In online, message was couldn’t check in until Sunday morning though plane left Saturday night. Checked in okay at airport but caused slot if stress.

It all went very well, except for the ramp coordination upon landing in Boston. That, however, was resolved in fairly short order.

NOTE. Aer Lingus does not accept American Express. I was denied boarding because I could not pay the fee for my oversized bag. I did not have another credit or debit card. Moreover, at CDG, I needed to check my bag at one location, go to another location to check my oversized bag and a THIRD location to pay for my oversized bag. Hence, once I was denied boarding, my bags were already en route to the plane. To retrieve them I needed to go to a FOURTH location in another part of the terminal. Last, Aer Lingus will not reimburse me for any portion of my ticket. I lost $1000 bc Aer Lingus doesn’t accept American Express at the CDG counter even though I paid for my ticket through the Kayak link with Amex. Kayak should remedy this situation if they want to continue to partner with Aer Lingus.

The biking process was confusing and I was called for a seat assignment from I number I repeatedly though was spam, but the flight itself was great

Everything you need to know for your flight from Chicago to Ireland

Cabin class types available on flights to Ireland

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