€236 Find Cheap Flights from Chicago O'Hare Airport 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 O'Hare Intl to Ireland departing on 8/4. 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.
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Best Ireland Flight Deals from O'Hare Intl

Cheapest return prices found by our users on KAYAK in the last 72 hours

Dublin
Dublin1 stop€408
Cork
Cork2 stops€582
Shannon
Shannon1 stop€663
Knock
Knock2 stops€871
Donegal
Donegal2 stops€844
Milltown (Kerry)
Milltown (Kerry)1 stop€781

Good to know

Low season

January

High season

September

Cheapest flight

€236
Best time to beat the crowds (23% less expensive on average)
Most popular time to fly and prices are also 18% lower on average.
Flight from Chicago O'Hare Airport to Dublin

FAQs - booking Ireland flights

  • How does KAYAK find such low prices on flights from Chicago O'Hare Airport 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 O'Hare Airport to Ireland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Chicago O'Hare Airport 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 O'Hare Airport 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 O'Hare Airport 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 O'Hare Airport 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 O'Hare Airport to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Ireland

  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly from Chicago is January.
  • Morning departure is around 10% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 4 airlines serving from O'Hare Intl to Ireland

Need help choosing which airline to fly with from O'Hare Intl 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.
7.8
KLMOverall score based on 1332 reviews
7.8Boarding
7.3Food
7.2Entertainment
7.7Comfort
8.4Crew
Airline reviews

They only had vegetarian food left on the flight which I wasn’t happy about. I didn’t get any food to eat at all.

2.0 Mediocredale, Feb 2025ACC - AMS
Read more KLM reviews

They only had vegetarian food left on the flight which I wasn’t happy about. I didn’t get any food to eat at all.

Overall very poor. Flight was disorganised, staff were rude and this is my second experience with KLM that I've had baggage go missing. It feels like, if you are an economy customer, KLM staff do not show you any care. I shall never fly with KLM again. Worst airline in Europe

Transfer at CDG to connecting KLM flight to Amsterdam was a NIGHTMARE. LONG WALKWAYS, NO MOVING WALKWAYS, POOR signage, Have to take a train & No staff visible to help navigate the maze. AVOID TRANSFER AT CDG AT ALL COST.

Good flight with KLM, friendly staff. Food was good, had much worse on other airlines. Selection of drinks also good enough for us. Entertainment was also good. The economy seats are ok and that’s it. For a 12 hour flight I think a little more comfort in the economy seats in pitch and softness would be highly appreciated by the customers and can makte the difference.

Good food. Excellent crew service. Clean aircraft. Narrow seats and isle.

I tried to upgrade to premium economy anis seat online during the checkin process. The payment didn’t work due to a technical glitch on KLM’s website. I wasn’t able to change my seat unless I called Amsterdam. Since I was in Canada and there’s a time difference this wasn’t practical. So when I arrived early to Ottawa airport my seat wasn’t available and I could only get a middle seat in premium economy which isn’t great. These middle seats are priced at the same rate as an aisle seat which makes no sense.

Seats were comfortable crew members support was very good but AVML ordered or selected by us needs a lot of improvement.

Transavia flight. Couldn't select seat or anything prior to flight. No connection with klm systems. Seats are very crammed. Extremely no frills.

Flight left a few minutes late, but that's it. I wish the seats could be wider and recline more.

Overall a very pleasant flight. No significant issues on either flight. Amsterdam airport is very convenient for connecting

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

This particular flight wasn't very full at the back, so there were three seats available for spreading out and getting relatively comfortable

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

You were more on time than United. I'm so over united delays.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

My boarding pass wouldn't pull up in the app very easily and had to really dig through my email. That caused a delay in TSA..

I had a TERRIBLE experience with the AA crew. I believe it was disability-related. It’s unlikely I will fly AA again.

Baby cried a lot. Nothing anyone could do about it. Just part of flying.

Gate agents kind of serious. Had to wait til arriving at gate to choose seats. Thankfully they did give us seats together! And grateful the honored our age, giving us seats at the front.

Very polite and helpful staff. Jet blue…ok, but not as helpful!..

Seat was very uncomfortable. The worst in all of my travels. It sagged in the middle, worse than anything any airline can offer. Not flying aer lingus again.

My Aer Lingus flight (booking ref # 2SU4LF) was the worst travel experience I have ever dealt with. My flight from Paris to Dublin was delayed by over 2 hours which caused me to miss my connecting flight back to the US. I was not able to be rebooked on a new flight for another 3 days. When I finally made it on my rescheduled flight, it was delayed AGAIN, causing me to miss my connecting flight from New York to Boston. At this point I decided to just rent a car since the next flight I would have been able to get in wasn’t for another 5 hours. It was a complete nightmare experience and I will never fly Aer Lingus again. I have requested a refund from the booking company I placed my order with.

They couldn't do through check-in for us. They took 2 hours to issue just one leg of the boarding pass. They had no idea to handle the case of passengers who travels to USA via Dublin airport. we had tough time time Dublin airport as boarding pass for the US flight was not pre-issued. Hope Aer Lingus will learn to handle such cases which they couldn't learn in in the past 50 years of the service.

Very sad, couldn't stop crying. Was an hour delay in Ireland and when we got to Canada the flight was boarded and couldn't get on. Was the last flight of the day. Now in a hotel waiting on a stand by.I have to got o work, so I'll go first available while my son stays in the hotel til one's available

Both flights late. Almost missed connecting flight and flight staff not willing to help expedite us off the plane.

I didn’t realize Aer Lingus was a “nickel and dime” kind of airline where you had to separately buy all the amenities you wanted. The push to purchase duty-free beauty products was off-putting. And our row had the least amount of leg room I’ve ever dealt with on a flight.

Amenity kits were never handed out. There was zero friendliness and assistance by crew. Food was uneatable. One drink was offered and no wine, with dinner or before or after. Cocktails and beverages were not encouraged and when I asked for water, none was given. Poorest, most cramped business class flight I’ve ever been on.

Probably my favorite airline and way to go to Europe. Everything went smoothly! Food was tasty, crew was pleasant. Really cannot complain!

Boarding crew is unfriendly as i was asked to handover carryon luggage too upto final destination Bangalore I was not prepared for that and i had to travel without my diabetic and hypertension medicines

I was charged fees for check in bags at the airport by British Airways. It was supposed to be no charge but Kayak messed up my booking apparently and I had to pay for check in bags. I paid $175.

They took my carry on and checked it in. Staff in general at Heathrow are not friendly or helpful

The crew were professional and friendly. It was the most uncomfortable international flight I've ever flown. Crammed in passengers. No overhead space to put my bag. No leg room and unable to recline seat due to seats too close together so it upset passenger behind me! Upgrade price to get 2 inches of more space unreasonable.

Boarding in Dallas was hell with extremely rude gate agents , especially a lady named Rajathi who was the epitome of rudeness with no compassion at all . She was horrible and I wonder why airlines have people like her on their roster who exude arrogance and haughtiness . Will probably not fly British Airwsys because of people like her .

Less than average, low level of shared required information needed during the transfer from airport to another, also the used team during boarding In Indianapolis station is Not Professional

Aer Lingus was the actual airline so they handled everything professionally.

Food was average. Better headphones seats were average at best.

Nice flight. Legroom was good. Food was good. Staff was friendly and helpful. Plane was modern and clean. Seats and headrests were comfortable. Entertainment system was good and modern, with a bright LCD screen and many appealing choices.

I have something to say about the flight I took from London to Gothenburg, after my flight from Austin to London. I fly a lot and have done so for decades. I first flew to Scandinavia in 1973. My former wife is Norwegian. The main thing was the experience at the Gothenburg airport. Three flights from Britain arrived around the same time. So there were huge lines at immigration since Brits are no longer a part of the EU. After over an hour in line, I finally gave my passport to the immigrations man. You’d have thought I was an Afghan. I just barely got into Sweden. I had to answer all kinds of blunt questions. I had to show all kinds of onward tickets, addresses of places I’d be staying and it was pretty daunting. Perhaps it has to do with the situation with Russia. British Air might have done something to prepare people that things have changed a lot and they’d better be ready to run the gauntlet when trying to get into the country here. Thanks for listening and taking this into consideration. Sincerely, a senior citizen of the USA

Book cheap flights from Chicago to Ireland

Recent return flight deals

5/3Wed
1 stopTAP AIR PORTUGAL
22h 05mORD-DUB
11/3Tue
1 stopTAP AIR PORTUGAL
28h 35mDUB-ORD
€408
2/4Wed
1 stopTAP AIR PORTUGAL
34h 00mORD-DUB
15/4Tue
1 stopTAP AIR PORTUGAL
27h 20mDUB-ORD
€409
1/4Tue
directAer Lingus
7h 25mORD-DUB
8/4Tue
directAer Lingus
8h 25mDUB-ORD
€514
1/4Tue
directAer Lingus
7h 25mORD-DUB
8/4Tue
directAer Lingus
8h 20mDUB-ORD
€515
24/3Mon
1 stopKLM
12h 45mORD-DUB
2/4Wed
1 stopKLM
16h 15mDUB-ORD
€541
23/3Sun
2 stopsBritish Airways
13h 34mORD-DUB
7/4Mon
1 stopBritish Airways
22h 55mDUB-ORD
€551
5/3Wed
2 stopsBritish Airways
13h 54mORD-DUB
11/3Tue
1 stopBritish Airways
16h 05mDUB-ORD
€583
9/4Wed
1 stopAmerican Airlines
11h 50mORD-SNN
18/4Fri
1 stopAmerican Airlines
20h 30mSNN-ORD
€663
7/4Mon
1 stopAmerican Airlines
11h 35mORD-SNN
14/4Mon
1 stopAmerican Airlines
13h 05mSNN-ORD
€664
7/4Mon
1 stopKLM
15h 30mORD-ORK
14/4Mon
1 stopKLM
27h 30mORK-ORD
€715

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Recent one-way flight deals

8/4Tue
2 stops
24h 36mORD-DUB
€236
6/4Sun
2 stops
31h 56mORD-DUB
€245
23/4Wed
1 stopTAP AIR PORTUGAL
24h 05mORD-DUB
€324
19/3Wed
1 stopTAP AIR PORTUGAL
22h 05mORD-DUB
€335
16/3Sun
1 stopAmerican Airlines
10h 45mORD-DUB
€387
23/3Sun
2 stopsBritish Airways
14h 30mORD-DUB
€392
2/3Sun
directAer Lingus
7h 20mORD-DUB
€423
23/3Sun
directAer Lingus
7h 20mORD-DUB
€431
16/3Sun
directAmerican Airlines
7h 20mORD-DUB
€485
25/7Fri
1 stopBritish Airways
13h 40mORD-NOC
€652

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Last minute flights from O'Hare Intl to Ireland

Last minute flight, train and bus deals

27/2Thu
multi-stopTurkish Airlines
31h 25mORD-DUB
4/3Tue
multi-stopTurkish Airlines
25h 30mDUB-ORD
€534
27/2Thu
multi-stopTurkish Airlines
19h 45mORD-DUB
5/3Wed
multi-stopTurkish Airlines
29h 15mDUB-ORD
€547
27/2Thu
multi-stopTurkish Airlines
19h 45mORD-DUB
3/3Mon
multi-stopTurkish Airlines
23h 15mDUB-ORD
€549
25/2Tue
multi-stopIcelandair
9h 45mORD-DUB
6/3Thu
multi-stopIcelandair
11h 50mDUB-ORD
€560
24/2Mon
multi-stopIcelandair
9h 45mORD-DUB
26/2Wed
multi-stopIcelandair
11h 50mDUB-ORD
€712
24/2Mon
multi-stopAer Lingus
16h 25mORD-SNN
3/3Mon
multi-stopAer Lingus
16h 10mSNN-ORD
€723
25/2Tue
directAer Lingus
7h 20mORD-DUB
6/3Thu
directAer Lingus
8h 35mDUB-ORD
€728
24/2Mon
multi-stopAmerican Airlines
14h 20mORD-SNN
3/3Mon
multi-stopAmerican Airlines
15h 15mSNN-ORD
€829
24/2Mon
multi-stopAmerican Airlines
13h 43mORD-SNN
3/3Mon
multi-stopAmerican Airlines
13h 00mSNN-ORD
€834
23/2Sun
multi-stopBritish Airways
18h 59mORD-SNN
1/3Sat
multi-stopBritish Airways
31h 20mSNN-ORD
€1,345

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Everything you need to know for your flight from O'Hare Intl to Ireland

Information on your arrival and departure airports

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