$280 Find Cheap Flights from Ireland to Chicago

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Chicago departing on 11/11. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Chicago, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Chicago, as well as popular online travel agencies
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Cheap Flights from Ireland to Chicago

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ireland to Chicago 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 round-trip flight deals from Ireland to Chicago

Fri, Nov 28 - Mon, Dec 1
Icelandair Logo
11:30 am - 5:20 pmDUB-ORD
11h 50m1 stop
Icelandair Logo
6:30 pm - 10:15 amORD-DUB
9h 45m1 stop
$374Icelandair
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Thu, Nov 27 - Sun, Nov 30
Icelandair Logo
11:30 am - 5:20 pmDUB-ORD
11h 50m1 stop
Icelandair Logo
6:30 pm - 10:15 amORD-DUB
9h 45m1 stop
$376Icelandair
Find Deal
Mon, Nov 10 - Thu, Nov 13
Scandinavian Airlines Logo
8:20 pm - 4:45 pmDUB-ORD
50h 25m2 stops
Scandinavian Airlines Logo
7:20 pm - 9:25 amORD-DUB
32h 05m1 stop
$386Scandinavian Airlines
Find Deal
Fri, Oct 31 - Mon, Nov 3
Scandinavian Airlines Logo
7:05 pm - 5:45 pmDUB-ORD
27h 40m1 stop
Scandinavian Airlines Logo
7:20 pm - 11:45 amORD-DUB
34h 25m1 stop
$402Scandinavian Airlines
Find Deal
Mon, Sep 1 - Sun, Sep 7
KLM Logo
10:00 am - 6:37 pmDUB-MDW
14h 37m1 stop
KLM Logo
6:17 pm - 10:00 amMDW-DUB
9h 43m1 stop
$439KLM
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Sun, Aug 31 - Sat, Sep 6
United Airlines Logo
9:30 am - 11:45 amSNN-ORD
8h 15mnonstop
United Airlines Logo
6:00 pm - 7:30 amORD-SNN
7h 30mnonstop
$486United Airlines
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Tue, Sep 16 - Mon, Sep 22
KLM Logo
12:00 pm - 5:35 pmDUB-MDW
11h 35m1 stop
KLM Logo
6:15 pm - 10:00 amMDW-DUB
9h 45m1 stop
$486KLM
Find Deal
Fri, Sep 12 - Fri, Sep 19
United Airlines Logo
9:30 am - 11:45 amSNN-ORD
8h 15mnonstop
United Airlines Logo
6:00 pm - 7:30 amORD-SNN
7h 30mnonstop
$488United Airlines
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Mon, Sep 22 - Mon, Sep 22
Aer Lingus Logo
7:20 am - 1:50 pmORK-ORD
12h 30m1 stop
Aer Lingus Logo
9:15 pm - 7:50 pmORD-ORK
16h 35m1 stop
$934Aer Lingus
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Mon, Sep 22 - Mon, Sep 22
Aer Lingus Logo
6:00 am - 7:00 pmORK-ORD
19h 00m2 stops
Aer Lingus Logo
9:15 pm - 10:55 pmORD-ORK
19h 40m2 stops
$1,415Aer Lingus
Find Deal
Booking Insights

KAYAK's insights & trends for flights to Chicago

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

What is the cheapest month to fly to Chicago?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Chicago, 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 to Chicago is November, where tickets cost $512 on average for return flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Ireland is $750 and $672 respectively. For one-way flights, the best month to travel is November with an average price of $512.

What is a good deal for flights to Chicago?

If you’re looking for cheap airfare to Chicago, 25% of our users found tickets to Chicago for the following prices or less: From Shannon $740 round-trip, from Dublin $741 round-trip.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Chicago, 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, you should book around 5 weeks before departure, which saves you about 19% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Which is the cheapest airport to fly into in Chicago?

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 $108.


Good to know

Low seasonJanuary
Cheapest flight$280
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Dublin to Chicago

FAQs - booking Chicago flights

  • Which Chicago airport is closest to central Chicago?

    There are 3 major airports in Chicago. The nearest airport from Chicago city center is Chicago Midway Airport (9 miles), followed by Chicago O'Hare Airport (16 miles) and Chicago Greater Rockford (79 miles).

  • How much is a flight to Chicago?

    On average, a flight to Chicago costs $866. The cheapest price found on KAYAK in the last 2 weeks cost $507 and departed from Dublin Airport.

  • What is the cheapest day to fly to Chicago?

    Based on KAYAK data, the cheapest day to fly to Chicago is Wednesday where round-trip tickets can be as cheap as $672. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $850 on average.

  • How does KAYAK find such low prices on flights to Chicago?

    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 to Chicago.

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

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

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

    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 to Chicago 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 to Chicago?

    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 to Chicago 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 Chicago?

    The cheapest time of day to fly to Chicago is generally in the morning, when round-trip flights cost $743 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 $817.

  • How many direct flights to Chicago are there each week?

    Each week there are around 11,085 direct flights from within Ireland to Chicago. The most common day for departures is Sunday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Chicago

  • Looking for a cheap flight? 25% of our users found flights on this route for $953 or less one-way and $741 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Chicago flight deals.

Reviews of the top airlines flying from Ireland to Chicago

 
See real verified KAYAK customer reviews for airlines flying to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to Chicago. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Chicago? 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.
7.4
United AirlinesOverall score based on 8900 reviews
8.1Crew
6.6Food
7.1Entertainment
7.7Boarding
7.3Comfort
Airline reviews

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

4.0 OkayGary, Jul 2025PIA - ORD
Read more United Airlines reviews

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Overall it was good. I missed my connection but I was put on another flight.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

All flight attendants could benefit by taking an international flight on Qantas Airline. Qantas attendants are much more hospitable in every way. Much superior than and attendants on any US airline.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

So far so good but food and entertainment are not available for this flight

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Everything went well. I made my connection which is always a concern.

Delightful flight, ahead of time with a super crew, thanks

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

This was the most expensive economy flight per minute of flight time ever. But the quality was lacking. Extremely Aer Lingus rude staff at LHR said that the flight from London to Dublin (Ireland) was “NOT international.” Horrified at the colonial and imperial perspective. Seats were dirty with trash in seat pockets. Airline doesn’t clean or care about hygiene and safety.

In business class overhead bins were minuscule. Had to use cabin staff to find a place for my carry-on bag. Boarding process was shambolic, as “passengers who needed assistance in boarding” absorbed an excessive amount of time and attention that Aer Lingus was apparently unprepared for.

Aer Lingus was fabulous.nhowever, Aiirfare Assist who Kayak routes me to to purchase tickets for m was awful. They messed up my reservation so bad that after about six hours on the phone with them over the week before departure, I had been choice but to show up at the airport. The Aer Lingus staff were amazing and got it sorted out but I would recommend not using Airfare Assist.

I had a great experience. I wasn’t sure what to expect but the crew helped me check my bags and made sure I got in the correct line to board. It was a bit of a walk to my gate so arrive early. I would recommend securing a flight that includes checking in your bag if you remotely think your baggage is over 10kg/22lbs. Be safe and upgrade unless you are carrying a backpack or weekend type baggage.

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

No entertained. food and beverages were not complimentary. they lost my checked luggage which made my 10 day vacation unpleasant.

Flight was on time. Boarding was quick and efficient. Seats were comfortable. Food was fine.

Everything you need to know for your flight to Chicago

Cabin class types available on flights to Chicago

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

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