ORD

€327 Find Cheap Flights to Chicago O'Hare Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to O'Hare Intl departing on 9/2. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago O'Hare Intl Airport

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

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

Free to useThere are no hidden charges or fees.

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

Everything you should know

Cheapest return fare
€403
Typical prices: €469-€571
Multiple Airlines
Fri 16/1Tue 20/1
DUB - ORD • 1 stop
Cheapest direct flights
€405
Typical prices: €429-€562
Aer Lingus
Thu 15/1Wed 21/1
DUB - ORD • Direct
Top airlines
Aer Lingus
Most flights • 14 per week
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
SNN-ORD
Cheapest
DUB-ORD
Most popular
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 19% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to O'Hare Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to O'Hare Intl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to O'Hare Intl 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 to O'Hare Intl

Fri, 16 Jan - Tue, 20 Jan
Multiple Airlines Logo
11:30 - 20:15DUB-ORD
14h 45m1 stop
Multiple Airlines Logo
18:25 - 12:10ORD-DUB
11h 45m1 stop
€403Multiple Airlines
Find Deal
Wed, 1 Apr - Mon, 6 Apr
American Airlines Logo
12:40 - 19:45DUB-ORD
13h 05m1 stop
American Airlines Logo
17:40 - 11:50ORD-DUB
12h 10m1 stop
€405American Airlines
Find Deal
Fri, 16 Jan - Fri, 23 Jan
Aer Lingus Logo
16:40 - 19:15DUB-ORD
8h 35mdirect
Aer Lingus Logo
21:00 - 10:20ORD-DUB
7h 20mdirect
€406Aer Lingus
Find Deal
Fri, 16 Jan - Thu, 22 Jan
Aer Lingus Logo
16:40 - 19:15DUB-ORD
8h 35mdirect
Aer Lingus Logo
21:00 - 10:20ORD-DUB
7h 20mdirect
€407Aer Lingus
Find Deal
Thu, 14 May - Fri, 22 May
Multiple Airlines Logo
09:40 - 17:50DUB-ORD
14h 10m1 stop
Multiple Airlines Logo
11:55 - 06:30ORD-DUB
12h 35m1 stop
€408Multiple Airlines
Find Deal
Thu, 8 Jan - Wed, 14 Jan
Aer Lingus Logo
16:40 - 19:15DUB-ORD
8h 35mdirect
Aer Lingus Logo
21:00 - 10:20ORD-DUB
7h 20mdirect
€409Aer Lingus
Find Deal
Mon, 12 Jan - Sun, 18 Jan
Scandinavian Airlines Logo
12:30 - 16:45DUB-ORD
58h 15m2 stops
Scandinavian Airlines Logo
19:10 - 18:20ORD-DUB
17h 10m1 stop
€411Scandinavian Airlines
Find Deal
Thu, 14 May - Sat, 6 Jun
United Airlines Logo
12:30 - 18:47SNN-ORD
12h 17m1 stop
United Airlines Logo
12:45 - 10:15ORD-SNN
15h 30m2 stops
€482United Airlines
Find Deal
Sat, 17 Jan - Sat, 24 Jan
British Airways Logo
07:50 - 15:25SNN-ORD
13h 35m1 stop
British Airways Logo
20:45 - 16:45ORD-SNN
14h 00m1 stop
€521British Airways
Find Deal
Sat, 17 Jan - Sat, 24 Jan
British Airways Logo
07:50 - 23:27SNN-ORD
21h 37m2 stops
British Airways Logo
18:25 - 16:45ORD-SNN
16h 20m1 stop
€525British Airways
Find Deal
Booking Insights

KAYAK's insights & trends for flights to O'Hare Intl

Get data-powered insights and trends into flights to O'Hare Intl to help you find the cheapest flights, the best time to fly and much more.

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

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the lowest price for a flight to Chicago O'Hare Airport was €327 for a one-way ticket from Shannon and €403 for a return. The most popular route searched for by our users was for flights from Dublin to Chicago O'Hare Airport and the best return deal found in the last 3 days was €403.

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

The average and cheapest price for all round-trip flights to Chicago O'Hare Intl Airport from each origin found by users searching on KAYAK in the last month.

On average, a flight to Chicago O'Hare Intl Airport costs €570. The cheapest price found on KAYAK in the last 2 weeks cost €242 and departed from Dublin. The most popular routes on KAYAK are Dublin to Chicago O'Hare Intl Airport which costs €731 on average, and Shannon to Chicago O'Hare Intl Airport, which costs €696 on average.

See prices from:

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Chicago O'Hare Intl Airport, 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 O'Hare Intl Airport is November, where tickets cost €419 on average for one-way flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Ireland is €656 and €604 respectively. For return trips, the best month to travel is November with an average price of €419.

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

If you’re looking for cheap airfare to Chicago O'Hare Intl Airport, 25% of our users found tickets to Chicago O'Hare Intl Airport for the following prices or less: From Dublin €390 one-way - €510 return.

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Chicago O'Hare Intl Airport, 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 1 week before departure. For the absolute cheapest price, our data suggests you should book 31 days before departure.

Good to know – Book Cheap Chicago O'Hare Intl Airport Plane Tickets

Low seasonJanuary
Cheapest flight€327
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly (5% more expensive on average)
Flight from Shannon to Chicago O'Hare 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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to Chicago based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking Chicago O'Hare Airport flights

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

    In the last 3 days, the lowest price for a flight to Chicago O'Hare Airport was €327 for a one-way ticket from Shannon and €403 for a return. The most popular route searched for by our users was for flights from Dublin to Chicago O'Hare Airport and the best return deal found in the last 3 days was €403.

  • How far is Chicago O'Hare Intl Airport from central Chicago?

    Central Chicago is 26 km away from Chicago O'Hare Intl Airport.

  • How much is a flight to Chicago?

    On average, a flight to Chicago costs €570. The cheapest price found on KAYAK in the last 2 weeks cost €242 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 tickets can be as cheap as €638. On the other hand, the most expensive day to fly is Tuesday, where prices are €729 on average.

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

    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 O'Hare Airport.

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

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

  • What is the Hacker Fare option on flights to Chicago O'Hare Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Chicago O'Hare Airport 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 O'Hare Airport?

    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 O'Hare Airport 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 O'Hare Intl Airport?

    The cheapest time of day to fly to Chicago O'Hare Intl Airport is generally at night, when flights cost €520 on average. The most expensive time of day to fly to Chicago O'Hare Intl Airport is generally in the afternoon, which is peak travel time and where the average cost of a ticket is €673.

Top tips for finding cheap flights to Chicago O'Hare Airport

  • Looking for cheap airfare to Chicago O'Hare Airport? 25% of our users found return tickets to Chicago O'Hare Airport for the following prices or less: From Dublin €450, from Shannon €634
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Chicago O'Hare Airport flight deals.

Prefer to fly direct to Chicago O'Hare Intl?

 
Nonstop data is based off flight results for the next 60 days. Find direct flights from all airlines flying nonstop to Chicago O'Hare Intl.
Find which airlines fly direct to Chicago O'Hare Intl Airport, which days they fly and book direct flights.

Direct departures

Ireland to Chicago O'Hare Intl

Monday

ANA, Aer Lingus, Aeromexico, +73 more

ANA, Aer Lingus, +74 more

Tuesday

ANA, Aer Lingus, Aeromexico, +73 more

ANA, Aer Lingus, +74 more

Wednesday

ANA, Aer Lingus, Aeromexico, +73 more

ANA, Aer Lingus, +74 more

Thursday

ANA, Aer Lingus, Aeromexico, +71 more

ANA, Aer Lingus, +72 more

Friday

ANA, Aer Lingus, Aeromexico, +75 more

ANA, Aer Lingus, +76 more

Saturday

ANA, Aer Lingus, Aeromexico, +73 more

ANA, Aer Lingus, +74 more

Sunday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

See more direct flights

Direct returns

Chicago O'Hare Intl to Ireland

Monday

ANA, Aer Lingus, Aeromexico, +73 more

ANA, Aer Lingus, +74 more

Tuesday

ANA, Aer Lingus, Aeromexico, +73 more

ANA, Aer Lingus, +74 more

Wednesday

ANA, Aer Lingus, Aeromexico, +73 more

ANA, Aer Lingus, +74 more

Thursday

ANA, Aer Lingus, Aeromexico, +71 more

ANA, Aer Lingus, +72 more

Friday

ANA, Aer Lingus, Aeromexico, +75 more

ANA, Aer Lingus, +76 more

Saturday

ANA, Aer Lingus, Aeromexico, +73 more

ANA, Aer Lingus, +74 more

Sunday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

See more direct flights

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

 
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 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.
7.4
United AirlinesOverall score based on 9066 reviews
7.7Boarding
8.1Crew
7.1Entertainment
7.3Comfort
6.6Food
Airline reviews

Very bad! They kept delaying my flight and wouldn’t do anything about it

2.0 MediocreSalwa, Dec 2025DAY - ORD
Read more United Airlines reviews

Very bad! They kept delaying my flight and wouldn’t do anything about it

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

United has come a long way, it’s been a fantastic experience traveling with them.

This flight leg was fantastic - super comfortable and a great selection of things to watch on the TV. Staff were excellent, really above and beyond.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Excellent all round, first time flying United. App is very helpful.

Efficient all round, very good crew. Short flight so the food, of course, was just snacks

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Flight, food and crew were all good, friendly and very satisfactory.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

Premium economy seat was decent. As always poor headphones, poor food and beverage, crew is not overly friendly

Excellent - explanations were clear staff was nice and flight was comfortable

Lost bag and 2 days no word leaving for cruise no clothes or stuff

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

Customer service was excellent! The app was terrible, tried several times to check in without success! But the young lady that checked us in was absolutely terrific and helpful.

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

Experience was great overall. However, the connection time between my flights (1hr 15 mins) was too short. We had to get through security check and US immigration in that time, and I made it to the gate just as they were announcing it was about to close. Flights with such a short connection time should maybe not be offered for purchase, or an advance alert would be helpful. Other than that the in-flight experience was excellent, especially the food. Many thanks!

The seats needs to be comfortables, at least please add more padding to the seats.

Incredible service. Incredible entertainment. I felt like they just kept serving us something new avery hour. My wife and I both had a joyous flight.

They out me in the baby row so I was surrounded by toddlers, they also did not send my luggage and was not able to book my connecting flight

I was so grateful for the kindness of the crew. They made a long trip very pleasant. Food was delicious. Many movie options

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.

Dinner was fabulous. Would have enjoyed a wine with it. None offered... for sale??? Breakfast was disappointing but adequate amount of food.

Again, we paid $ 328.00 for specific seats are were assigned those seats.

Having been prepared for paying for everything on board other than water, coffee and tea the service was OK. Food and drink is expensive but the food was OK if limited in scope. Plane was clean and obviously well serviced. After complaining about having to walk in wind and rain to a get a bus to the airport the same thing happened at Portland. I’m sure you could get a terminal gate flight, complimentary food and drink for not much more money without traipsing through rain and slush in Reykjavik. Not bad but not great.

They had a 4 hour delay and left my luggage in Iceland and it didn’t arrive in Portland until 11/1

Iceland air transfer was bad. They lost my luggage and I just received it 11/1

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

It was too cold in the plane my feet froze

Service was excellent. Food and drinks were very good except for a greasy lump of a donut at the end of the flight that left us both feeling internally disgusted.

No meals included on this long international flight. Most airlines will offer you a meal when flying internationally. Not Icelandair. Your included choices are water and coffee. Poor customer service. The airport was also very confusing.

Best smelling onboard bathrooms ever. Even after use the whole flight. Biggest overhead bins. Most legroom in economy class. Great Icelandiic music. Really nice staff. Icelandair is awesome! (Don’t fly Air Canada! During the strike they lied about no flights available (I booked this flight myself) and hid the process to get money back on their website by obscuring menu titles, then made it difficult and time consuming to fill out. I’m Canadian. Don’t trust Air Canada!

It was good. The air plane is clean and staff were friendly.

Audi visual not working for a whole group of seats in first class. How does a plane leave the main hub in such poor condition? How much that we can’t see so immediately is also compromised?

main meals are horrible but then you dont fly for the food

It was good. Couldn’t Check in online and select seats

It was great. Enough space and room for legs . Great service to.

⭐ British Airways Review — A Journey of Highs, Lows, and Lessons ⭐ I recently flew Business Class round-trip from Boston to Mumbai with British Airways, and my experience was a tale of two extremes — from disappointment to exceptional service, and then back to inconsistency. Boston → London: A Surprisingly Poor Start My journey began on a disappointing note. On a 6-hour Business Class flight, I was surprised to discover that there wasn’t a single proper vegetarian meal option available. I was offered a few bakery items only after repeatedly requesting something to eat. The flight attendant shrugged, offered no solution, and eventually — quite literally — threw some bread at me after much delay. This was not only disheartening, it was extremely surprising given my wonderful Business Class experience with BA last year. I stepped off that flight genuinely hungry and had to make a mad dash to the lounge just to get a proper meal. London → Mumbai: A Complete Turnaround The next sector restored my faith in British Airways. The entire crew was warm, welcoming, attentive, and genuinely caring. A special shoutout to Phiroze and the entire team serving the Business Class cabin — their professionalism, hospitality, and thoughtful service were extraordinary. They truly embodied what makes British Airways a global leader, and I am deeply grateful for the experience they provided. This is the BA I know and love. Mumbai → London: A Strange Meal Schedule This sector was generally fine, but the meal timing was puzzling. Lunch at 10:30 AM — for a Business cabin — felt unusual, and most passengers, including myself, barely touched it. The rest of the service was smooth, but the scheduling definitely needs a rethink. London → Boston: Mixed Experience Again The flight itself was decent, but the Business Lounge at Heathrow for this leg was a letdown. Arrived during lunch hours: no hot vegetarian options available Lounge area: dirty dishes everywhere Even after politely alerting the staff, the dishes were ignored and left uncleared For a premium cabin passenger — and at one of the world’s busiest international hubs — this was disappointing. Overall Impression My journey with British Airways felt inconsistent — two great sectors sandwiched between two that fell short of the BA standard. When BA is good, it is world-class. When it misses, the gap is noticeable. I genuinely hope the airline takes this feedback as constructive insight. I continue to believe in British Airways, and I commend the outstanding crew on the London → Mumbai sector — they were the highlight of my entire trip. With a little more focus on vegetarian meal availability, lounge service, and consistency across crews, BA can ensure every Business Class passenger experiences the premium journey they promise.

We were in business class and I had seat # 1. This was a night flight and after dinner was served, lights were dimmed and I went to sleep. The crew were loud and noisy so I didn’t get much sleep. I expect the crew to enjoy themselves but would Appreciate some decency in staying quiet while the passengers sleep

Have travelled business class with other airlines who profess to be the best in the world. They can however not beat the service and comfort that BA provide.

Well unfortunately our connecting was cancelled and next flight delayed. Was in airport 9 hours. Flight itself was good. I’m sure it was a FAA problem.

Great on board entertainment Tasty food Cattle class obviously crammed but not as bad as shorter hall flights

I was attacked in the Miami airport and the staff did nothing. On my flight from London to Miami one of the flight attendants screamed at me and demanded I keep my seat in the upright position at all times during the fight so the man behind me was comfortable for the flight. I will never in my life use British airways again

Travelling to a place near O'Hare Intl?

Book flights to O'Hare Intl if you plan to visit one of these locations
Oak Brook
Lansing
Valparaiso
Rosemont
Schaumburg
Itasca
Oak Lawn
Racine
Lake Geneva
Vernon Hills
Naperville
Bolingbrook
Arlington Heights
South Holland
New Buffalo
Aurora
Oakbrook Terrace

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

Information on the airport you'll fly into in Chicago