ORD

€344 Find Cheap Flights to Chicago O'Hare Airport – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
€351
Typical prices: €511-€758
Icelandair
Sun 18/11Sat 1/12
DUB - ORD • 1 stop
Cheapest direct flights
€442
Typical prices: €529-€777
Lufthansa
Mon 5/11Mon 12/11
DUB - ORD • Direct
Direct flights
You can fly direct with Aer Lingus and United Airlines. Average duration is 8h 32m
FAQs
FAQs
Top airlines
Most flights • 14 per week
Best reviews • 7.6 score
Airline reviews
+1
Airline reviews
+1
Top routes
Cheapest • 8% average savings
Most popular
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 16 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 31% price drop
Most popular
Good to know
+1
Good to know
+1
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We hope you enjoy your trip to Chicago O'Hare Intl Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to O'Hare Intl

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to O'Hare Intl

Wed, 18 Nov - Tue, 1 Dec
Icelandair Logo
11:30 - 17:20DUB  Dublin-ORD Chicago O'Hare Intl
11h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
18:30 - 10:15ORD  Chicago O'Hare Intl-DUB Dublin
9h 45m1 stop Reykjavik Keflavik Intl
€351Icelandair
Fri, 20 Nov - Mon, 30 Nov
Icelandair Logo
11:30 - 17:20DUB  Dublin-ORD Chicago O'Hare Intl
11h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
18:30 - 10:15ORD  Chicago O'Hare Intl-DUB Dublin
9h 45m1 stop Reykjavik Keflavik Intl
€351Icelandair
Mon, 2 Nov - Mon, 9 Nov
Lufthansa Logo
05:10 - 20:05DUB  Dublin-ORD Chicago O'Hare Intl
20h 55m1 stop Frankfurt am Main
Lufthansa Logo
18:30 - 08:10ORD  Chicago O'Hare Intl-DUB Dublin
7h 40mdirect
€405Lufthansa
Mon, 2 Nov - Mon, 9 Nov
Lufthansa Logo
05:10 - 13:10DUB  Dublin-ORD Chicago O'Hare Intl
14h 00m1 stop Frankfurt am Main
Lufthansa Logo
22:35 - 16:30ORD  Chicago O'Hare Intl-DUB Dublin
11h 55m1 stop Frankfurt am Main
€411Lufthansa
Sat, 21 Nov - Thu, 3 Dec
United Airlines Logo
10:40 - 13:20DUB  Dublin-ORD Chicago O'Hare Intl
8h 40mdirect
United Airlines Logo
18:15 - 10:20ORD  Chicago O'Hare Intl-DUB Dublin
10h 05m1 stop Washington, D.C. Dulles Intl
€420United Airlines
Wed, 18 Nov - Wed, 2 Dec
United Airlines Logo
10:40 - 13:20DUB  Dublin-ORD Chicago O'Hare Intl
8h 40mdirect
United Airlines Logo
12:55 - 07:30ORD  Chicago O'Hare Intl-DUB Dublin
12h 35m1 stop Newark
€420United Airlines
Mon, 16 Nov - Fri, 27 Nov
Air Canada Logo
09:00 - 15:38DUB  Dublin-ORD Chicago O'Hare Intl
12h 38m1 stop Toronto Pearson Intl
Air Canada Logo
12:50 - 07:10ORD  Chicago O'Hare Intl-DUB Dublin
12h 20m1 stop Toronto Pearson Intl
€423Air Canada
Sat, 21 Nov - Sat, 28 Nov
Air Canada Logo
09:00 - 15:38DUB  Dublin-ORD Chicago O'Hare Intl
12h 38m1 stop Toronto Pearson Intl
Air Canada Logo
12:50 - 07:10ORD  Chicago O'Hare Intl-DUB Dublin
12h 20m1 stop Toronto Pearson Intl
€423Air Canada
Tue, 10 Nov - Tue, 17 Nov
Aer Lingus Logo
15:50 - 18:20DUB  Dublin-ORD Chicago O'Hare Intl
8h 30mdirect
Aer Lingus Logo
20:05 - 09:30ORD  Chicago O'Hare Intl-DUB Dublin
7h 25mdirect
€466Aer Lingus
Thu, 5 Nov - Thu, 12 Nov
Aer Lingus Logo
11:30 - 14:10DUB  Dublin-ORD Chicago O'Hare Intl
8h 40mdirect
Aer Lingus Logo
15:55 - 05:15ORD  Chicago O'Hare Intl-DUB Dublin
7h 20mdirect
€466Aer Lingus
Booking Insights

Price, demand, and travel trends for flights to Chicago O'Hare Intl Airport

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

What is the cheapest flight to Chicago O'Hare Intl Airport?

Dublin to Chicago O'Hare Intl Airport is the cheapest route at €351 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to Chicago O'Hare Intl Airport?

On average, a return flight from Ireland to Chicago O'Hare Intl Airport costs €611, based on KAYAK data over the past 12 months. Return fares from Cork average €602, while Dublin runs a bit higher at €604.

What is the cheapest day to fly to Chicago O'Hare Intl Airport?

Wednesday is the cheapest day to fly to Chicago O'Hare Intl Airport at €577 return on average over the past 12 months on KAYAK. Monday is the most expensive at €675.

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

•November is the cheapest month to fly to Chicago O'Hare Intl Airport with an average price of €425 return.
•August (€778) and July (€744) are the most expensive.
•Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Chicago O'Hare Intl Airport?

Night flights to Chicago O'Hare Intl Airport are the cheapest at €494 return on average. Morning flights are the most expensive at €635.

What is a good deal for flights to Chicago O'Hare Intl Airport?

Flights under €511 are considered a good deal. 25% of KAYAK users found return flights to Chicago O'Hare Intl Airport at or below these prices, with the lowest fares from:
•Dublin €508.

When are flights to Chicago O'Hare Intl Airport the cheapest?

Flights to Chicago O'Hare Intl Airport are cheapest 16 weeks before departure. Booking in this window typically costs about 29% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for flights to Chicago O'Hare Intl Airport

Low season

January

Cheapest flight

€344
Beat the crowds with an average 59% drop in traveller numbers.
The most popular month to fly with an average 24% increase in traveller numbers.
One-way flight from Shannon to Chicago O'Hare Intl Airport

When to book flights to O'Hare Intl

Are your dates flexible? Find out the best times to travel to O'Hare Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Flights to O'Hare Intl: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew to O'Hare Intl 
Verified travelerFlew with Aer Lingus-Sept 2026
Get there early enough to be able to relax and shop a bit
JohannaFlew with Aer Lingus-Feb 2026
Are Ling’s was great, and boards from the back of the plane, which made boarding way less chaotic and much quicker.

Your questions about flights to Chicago O'Hare Intl Airport, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • How do I know if a flight to Chicago O'Hare Intl Airport is a good deal?

    A good deal on a flight to Chicago O'Hare Intl Airport is around €511 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • How long is a direct flight to Chicago O'Hare Intl Airport?

    Direct flights to Chicago O'Hare Intl Airport are available from Dublin, with a flight time of about 8h 05m.

  • How expensive are last-minute flights to Chicago O'Hare Intl Airport?

    Last-minute fares to Chicago O'Hare Intl Airport (booked within two weeks of departure) are typically 18% higher than the average return fare of €611.

  • What is the difference between the most popular and the most frequent airline at Chicago O'Hare Intl Airport?

    Aer Lingus operates the most flights from Ireland to Chicago O'Hare Intl Airport at 14 per week, and for this route Aer Lingus is also the airline most often selected by KAYAK users searching for flights from Ireland to Chicago O'Hare Intl Airport. The two are sometimes different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • Which airlines should I consider for flights to Chicago O'Hare Intl Airport?

  • How many flights serve Chicago O'Hare Intl Airport?

    Chicago O'Hare Intl Airport receives 3 flights per day and 21 per week from across the world. Dublin has the most flights to Chicago O'Hare Intl Airport with 21 weekly flights.

  • Which airports serve Chicago and the surrounding area?

    Flights to Chicago can arrive at several major airports serving the metro area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD). Nearby alternatives within 80.5 km of Chicago include Chicago Midway (MDW). This airport is not in Chicago itself but may be useful depending on your route, airline, and onward travel plans.

Your guide to booking Chicago O'Hare Intl Airport flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to Chicago O'Hare Intl Airport, book around 16 weeks before departure. Based on KAYAK data from the last 12 months, fares are historically about 29% lower during this window than last-minute fares.
  • For flights to Chicago O'Hare Intl Airport, a good return fare is around €511. If you find a fare below that, you're getting a strong deal.
  • If your travel dates are flexible, consider flying to Chicago O'Hare Intl Airport in November. Return fares historically average €425, making November the cheapest month to travel based on KAYAK data from the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to evening to save up to €141 on a return flight. Evening flights to Chicago O'Hare Intl Airport average €494 compared to €635 for morning flights.
  • Bag allowances vary by airline, fare type, cabin class, and route. On flights to Chicago O'Hare Intl Airport, some airlines may include bags at no extra cost. For example, Aer Lingus includes a cabin bag and a checked bag in Economy class, United Airlines includes a cabin bag and a checked bag in Economy class, and Iberia includes a cabin bag and a checked bag in Economy class. Always check the fare details before booking, since bag policies can change by ticket type.
  • Once you arrive in Chicago O'Hare Intl Airport, a few great places to start are Magnificent Mile, McCormick Place, and Grant Park. These are popular with first-time visitors and can give you a good feel for the area.

Reviews of the top 5 airlines flying to O'Hare Intl

 
Need help choosing which airline to fly with to O'Hare Intl? 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.
7.6
FinnairOverall score based on 1430 reviews
7.6Boarding
8.2Crew
6.7Food
7.4Comfort
6.9Entertainment
Airline reviews

Business class should have free wi-fi. Food was horrible

4.0 OkayAnonymous, Sept 2026
Read more Finnair reviews

Business class should have free wi-fi. Food was horrible

Will never fly American Airlines business class again. Medicore service and very old aircraft.

Staff went above and beyond with their care for us. Flight attendants were very attentive to our needs. Food seemed too rich and too salty. Flight was fine, even with turbulence at points.

It all went very smoothly, love the new planes and cabin crew upbeat and friendly Food ok, but that is the hardest part of it all

Finnair was ok. But some things were pretty bad: 1. Crew was not friendly, especially a crew member named, Maria. She woke me up while I was deep asleep by force just to let me know that 2 people can’t be on the same seat (my toddler and me) for sleeping. 2. There was no vegetarian option in the menu so I had to eat bread for one meal 3. They didn’t have an option for child meal

The food was delicious. There has been a major improvement here in the last few years. Excellent, friendly service. An enjoyable experience.

Awful. Delayed for unknown reason. Boarded late, part of a Tight connection ands had to go through customs and immigration. And they lost my bags.

Flight on time, landed well ahead of schedule. Attendants were excellent and responsive

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

It was listed on my ticket as Finnair but there was no indication that the flight was Finnair. In fact the number was even different. There were no employees there until exactly 2 hours before so we had to wait in line at Iberia and hope

On time. Accommodated carry on and personal bag in the plane. Good entertainment available and access without using own device. Gave a whole can of juice rather than a pour. Seat did not recline much.

Good, our flight was delayed but that was totally out of their control due to weather and a presidential visit.

The price. Omg $1100. Was crazy and it was not clear on the website.

Excellent. I had a medical emergency on flight SNA-ORD and the attendants were very helpful.

After having bad experience last time This time they were very good

Usual wait for over a half hour for a gate at Ohare. They tell you you'll get there early then sit on the plane and wait almost an hour

Plane congestion resulted in a 1 hr wait from landing to arrival at the gate. This was in addition to also experiencing extreme delays on my incoming flight.

Very disappointing that on an international business class flight they would not give me access to the lounge in Boston. They said it was because it was a codeshare flight. International business class should include lounge access regardless of codeshare.

The counter person at the gate was rude and demeaning, to the point that I wouldn't fly this airline again.

Crew was great. Seats are cramped and uncomfortable and I’m a small person.

The plane from Venice to Dublin ran out of food. They did not restock the plane in Venice.

The crew was first rate. They allowed me to switch my middle seat to an isle seat and it made my flight home so much more comfortable.

Very comfortable flight. Great service, food options, and entertainment options. With Wi-Fi!

Small plane. Tight seating . What can one say except that it was fast!

The flights are literally always delayed arriving, boarding and taking off so they are always late for the connection. I planned ahead so I was okay but many others aren't. The food was terrible. The staff was very pleasant. I appreciate boarding back to front.

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

Very nice experience. Flight had good entertainment system and good food options. Customer service was very friendly and nice as well.

The same as I stated prior. We incurred extra costs that should be reimbursed, given we were not communicated with about schedule changes.

My flight from Dublin was delayed two hours which ment that I missed my connecting flight to Phoenix. American Airlines provided a hotel room and rebooked my flight for 7:30 AM the next day. I didn't get to the room until 11 pm and I had to be at the airport the next day by 5 AM. The airlines did their best but the schedule was challenging for an 81 year old.

I like Aer Lingus so that is why I’m writing this critique so they can become better. The boarding gate was too small to board properly. Our seats were toward the back of the plane knowing we would be boarding after business class, we moved to that area after business class boarded. An Aer Lingus employee told us we couldn’t stand there. We explained we were the next group to board and wouldn’t even be able to hear when our boarding was called. She didn’t care and was not very professional. The cabin was freezing. I wouldn’t feed my dog the food. We were over an hour late coming into chicago because of weather which can’t be avoided. I asked the crew if they could make an annoucement for before whose final destination is chicago to wait and allow the people with connecting to deplane first. He said there are a lot of people with connecting flights. He said, it doesn’t matter. Well, yes it does. He could have been more considerate of his passengers.

Great experience in Saga Premium. Food was tasty and felt fresh. Seat was comfortable (enough) - would have wanted a layflat seat.

The flight itself was excellent, but getting to the plane was literally an exercise in pain. My wife needs a wheelchair and can only stand/walk for short periods before having extreme pain. We had to take a bus to a loading platform and use a terrible elevator to get up to the plane. Meanwhile the rest of the bus were using the stairs. This meant the people who needed to sit down were stuck standing at the end of the line while everyone else boarded. My wife was in agony.

It was amazing. I sat in First Class as a Saga Premium member, and my service was top notch. It was wonderful. I only recently joined Saga Club since I do travel to Scandinavia often and enjoy flying through Reykjavik on Iceland Air versus other ways of travelling to Europe. This was my first trip sitting in first class, which I honestly wasn’t expecting!

There were no places to sit at the gate. Most people had to sit on the floor or stand waiting for the gate to open and board. We were told we needed passport and the person hardly looked at them. Maybe for 2 seconds. No announcement made asking to board by row or group. On a 5.5 hour flight the crew only came through the cabin 2 times offering water and buy everything else. For the price of the ticket at least offer free soda! The airliner was very comfortable

Crew was wonderful. I knew going in that the seats were not lie-flat in business class, but they reclined less than I expected. To save on waste, you have to ask for which pieces of the amenity kit you are interested in, which they will gladly give to you. Flight was fairly short, so no issues. I did have one piece of luggage not show up at terminal on landing. They were great about looking for it. Found it...it actually did make the flight and was listed as "not picked up" (?????--we stayed over an hour looking for it, including in the odd-sized baggage claim.) Since "not picked up" they will not ship to my house and I have to go back to airport, which is in another town. I probably could have pressed this issue, but headed back to airport for another flight anyway, so will pick up then.

It didn't happen. Icelandair cancelled the flight from Nuuk, Greenland to Reykjavik, Iceland so I couldn't fly to Portland. Additionally Icelandair rebooked me on a flight that got cancelled too.

At least one soda free, felt like I was nickeled to death.

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

Good. Lacking overhead bin space. No food offered but you can order online or in flight and pay for snacks.

We had to be bussed to the plane. And it was raining. Not a pleasant experience.

roomiest flight in economy I've taken in years. Excellent experience!

I was booked to travel from Dallas to Nairobi via Chicago and Brussels and had been issued boarding passes for all three segments of my journey. At the boarding gate in Dallas, I was required to check my carry-on luggage due to limited cabin space. Despite my attempts to explain that I was traveling internationally and would not have access to the bag during transit, my concerns were not considered. I also informed the staff that I did not have a padlock to secure the luggage, but this was disregarded. Consequently, I had to hastily transfer essential items from my carry-on into my handbag. To my surprise, upon arriving at Chicago Airport, I observed numerous international travelers boarding with cabin bags that were significantly larger than mine. This experience left me extremely disappointed and led me to decide against using United Airlines for future international travel, a sentiment I have also shared with friends and family. Unfortunately, the onboard experience on the Chicago to Brussels flight further reinforced my dissatisfaction. The cabin crew appeared disengaged, indifferent, and lacking in attentiveness, resulting in a service experience that fell well below my expectations.

I want to highlight the crew members and their excellent work and professionalism. They work hard to make a long trip the most comfortable as possible, the food and drinks they offer are pretty good. And they are always asking if you need something else. I have had experiences with other airlines where you have to basically beg for a bottle of water. This is not the case. Highly recommended!!!

the blanket was great and pillow helped. really need a toothpick packed with meals

Very comfortable plane. The food was very good (for airplane food). The crew was great

The legroom was lacking and the entertainment system lacked adequate selection of older films. Modern films are generally not very good.

Perfect airline, super friendly, great service, tasty food. Would fly again.

Everything could have been better. What needed to be wrong with United went wrong

It was good. The seats in economy weren’t bad

Very good. Comfortable and I felt well taken care of from start to finish

Travelling to a place near O'Hare Intl?

Book flights to O'Hare Intl if you plan to visit one of these locations
Valparaiso
Schaumburg
Crown Point
Rosemont
Joliet
Aurora
Lansing
Lisle
Oak Brook
Elgin
Tinley Park
Lake Geneva
Vernon Hills
Naperville
New Buffalo
Wheeling
Bolingbrook
Arlington Heights
Orland Park
Benton Harbor

More options for your flight to O'Hare Intl