€303 Find Cheap Flights 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 20/1. 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.
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Search 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
These are the airlines KAYAK users have selected most often from within our search results for flights to Chicago
In the last 7 days, travellers have searched 41,299,237 times on KAYAK, and here's why:

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Cheap Flight Deals to Chicago

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights 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.

Recent return flight deals from Ireland to Chicago

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Ireland to Chicago.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
10:20 - 17:50DUB-ORD
13h 30m1 stop
19:40 - 10:25ORD-DUB
32h 45m2 stops
€333Scandinavian Airlines
Find Deal
Sat, 1 Feb - Sat, 8 Feb
10:10 - 17:50DUB-ORD
13h 40m1 stop
19:40 - 11:15ORD-DUB
33h 35m2 stops
€334Scandinavian Airlines
Find Deal
Sun, 2 Feb - Fri, 28 Feb
11:30 - 17:20DUB-ORD
11h 50m1 stop
19:30 - 10:15ORD-DUB
9h 45m1 stop
€382Icelandair
Find Deal
Wed, 5 Mar - Mon, 10 Mar
11:30 - 17:20DUB-ORD
11h 50m1 stop
18:30 - 10:15ORD-DUB
9h 45m1 stop
€383Icelandair
Find Deal
Tue, 14 Jan - Tue, 21 Jan
13:05 - 18:45DUB-ORD
11h 40m1 stop
21:45 - 15:00ORD-DUB
11h 15m1 stop
€459British Airways
Find Deal
Sat, 18 Jan - Sat, 25 Jan
20:30 - 13:55DUB-ORD
23h 25m1 stop
22:00 - 15:05ORD-DUB
11h 05m1 stop
€461British Airways
Find Deal
Mon, 13 Jan - Sun, 19 Jan
16:40 - 19:15DUB-ORD
8h 35mdirect
21:00 - 10:20ORD-DUB
7h 20mdirect
€465Aer Lingus
Find Deal
Fri, 17 Jan - Thu, 23 Jan
16:40 - 19:15DUB-ORD
8h 35mdirect
21:00 - 10:15ORD-DUB
7h 15mdirect
€469Aer Lingus
Find Deal
Mon, 13 Jan - Sun, 19 Jan
09:00 - 09:34DUB-ORD
30h 34m2 stops
06:30 - 07:00ORD-DUB
18h 30m2 stops
€512United Airlines
Find Deal
Sat, 15 Feb - Sun, 23 Feb
09:00 - 14:48DUB-ORD
11h 48m1 stop
07:10 - 07:00ORD-DUB
17h 50m1 stop
€575United Airlines
Find Deal
Mon, 13 Jan - Sun, 19 Jan

Flights to Chicago - Travel Insights & Trends

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

What is the cheapest flight to Chicago?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.
In the last 3 days, the cheapest flight deal to Chicago was found on the route from Dublin, at €318 return. The most popular connection is from Shannon to Chicago and KAYAK users have found return deals for as low as €581 in the last 3 days.

How much is a flight to Chicago?

The average and cheapest price for all round-trip flights to Chicago from each origin found by users searching on KAYAK in the last month.
A flight to Chicago costs €642 on average. The cheapest price found on KAYAK in the last 2 weeks cost €401 and departed from Dublin. The most popular routes on KAYAK are Dublin to Chicago which costs €769 on average, and Shannon to Chicago, which costs €827 on average.
See prices from:

What is the cheapest day to fly to Chicago?

The average price of all round-trip flights to Chicago clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Chicago is Friday where round-trip tickets can be as cheap as €524. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are €588 on average.

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 €401 on average for return flights. On the other hand, the most expensive months are July and June, where the average cost of tickets from Ireland is €718 and €672 respectively. For one-way flights, the best month to travel is November with an average price of €401.

What is the cheapest time of day to fly to Chicago?

The average price for all round-trip flights to Chicago depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Chicago is generally in the evening, when round-trip flights cost €492 on average. The most expensive time of day to fly to Chicago is generally at night, which is peak travel time and where the average cost of a ticket is €579.

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 Dublin €636 return.

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 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 16 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 O'Hare Intl Airport (ORD), with an average flight price of €610.

Good to know

Low season

January

High season

July

Cheapest flight

€303
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly (9% more expensive on average)
Flight from Dublin to Chicago O'Hare Airport

When to book flights to Chicago

Are your dates flexible? Find out the best times to travel to Chicago 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 flights

  • What is the cheapest flight to Chicago?

    In the last 3 days, the cheapest flight deal to Chicago was found on the route from Dublin, at €318 return. The most popular connection is from Shannon to Chicago and KAYAK users have found return deals for as low as €581 in the last 3 days.

  • Which Chicago airport is closest to central Chicago?

    The distance between Chicago Midway Airport and the city centre of Chicago is 14 km, which makes it the closest of the 3 Chicago airports airports. Chicago O'Hare Airport is 26 km away from the centre and Chicago Greater Rockford is 126 km away.

  • How much is a flight to Chicago?

    On average, a flight to Chicago costs €642. The cheapest price found on KAYAK in the last 2 weeks cost €401 and departed from Dublin Airport.

  • 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 travellers 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.

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

    Each week there are around 14 direct flights from within Ireland to Chicago. The most common day for departures is Monday, with 14% of flights taking off on this day.

See more FAQs

Top tips for finding cheap flights to Chicago

  • Looking for a cheap flight? 25% of our users found flights on this route for €402 or less one-way and €636 or less round-trip.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be February, March and April. The cheapest month to fly from Ireland is September.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Chicago flight deals.
See more tips

Prefer to fly direct to Chicago?

Find which airlines fly direct to Chicago, which days they fly and book direct flights.

Direct departures

Ireland to Chicago

Monday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Tuesday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Wednesday

ANA, Aer Lingus, Aeromexico, +78 more

ANA, Aer Lingus, +79 more

Thursday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Friday

ANA, Aer Lingus, Aeromexico, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aeromexico, +74 more

ANA, Aer Lingus, +75 more

Sunday

ANA, Aer Lingus, Aeromexico, +79 more

ANA, Aer Lingus, +80 more

See more direct flights

Direct returns

Chicago to Ireland

Monday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Tuesday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Wednesday

ANA, Aer Lingus, Aeromexico, +78 more

ANA, Aer Lingus, +79 more

Thursday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Friday

ANA, Aer Lingus, Aeromexico, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aeromexico, +74 more

ANA, Aer Lingus, +75 more

Sunday

ANA, Aer Lingus, Aeromexico, +79 more

ANA, Aer Lingus, +80 more

See more direct flights
See more direct flights

Top 5 airlines flying 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.
7.8
KLMOverall score based on 1349 reviews
7.9Boarding
7.7Comfort
7.2Entertainment
8.4Crew
7.3Food
Airline reviews

Great boarding, great short flight but no entertainment whatsoever and no wifi. Prepare to disembark by a staircase.

10.0 ExcellentAnonymous, Dec 2024BRU - AMS
Read more KLM reviews

Great boarding, great short flight but no entertainment whatsoever and no wifi. Prepare to disembark by a staircase.

Great boarding, great short flight but no entertainment whatsoever. It was supposed to have wifi but that did not work.

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.

The food & entertainment really stood out in terms of quality. The nasi goreng & chicken satay were absolutely delicious. It’s great that KLM feature international cuisine.

Seats were nice and comfy. Crew was polite and attentive. Business class is awesome and worth the money.

The IFE was quite old, but it worked fine and the content was good. The cabin crew were excellent and the food was as also very good

It’s chaotic at the bus stop outside of the airport because of the Uber meeting point. You need to be alert and look for the KLM bus which is not branded or labeled. Incorrect information was provided to go to gate 28, when in fact the bus was at gate 27. On the plus side the bus left early and arrived early to Ottawa.

Did not even get on board. Was told I needed an esta agreement. Was not aware of this when I booked the fare and not told about them

Cramped seats. Audio jack for the in -flight entertainment was broken.

Flight was great albeit the long line before the int’l immigration given the timing of the year.

They canceled our flight and left us stranded to figure it out

We appreciated the friendly, efficient, and professional flight attendants. A wider selection of hot foods would be nice.

Did not have enough time from Venice seaport at Ravenna to get to Venice airport in order to make the scheduled flights. Need to have at least 3+ hours from ship docking to airport.

Everything was very good. Was able to change a make run flight leaving on direct earlier in the app -seamless!!! Well done

Being stick waiting for gate at ORD cause me to almost miss my connecting flight…being deaf United made no no effort to keep me updated as I couldn’t hear the PA

As usual, United scheduling is completely misleading. A 54-minute layover at O’Hare is too short to make a lot of connections, especially since the flight landed “on time” but had to wait on the taxiway 15 minutes for a gate to open up. Then it takes another 10 minutes to exit the plane before one can run to another concourse to catch a connecting flight.

The seats on the aircraft are like sitting in a rock. During the boarding process they recognize Active Duty Military, why don’t they recognize Retired Military. I’ve always preferred Delta, this flight confirmed why I still prefer Delta.

Again, lines for boarding are a problem in iceland. The flight itself was fine and very smooth. No complaints. We would definitely fly icelandair again.

take snacks and food. purchase options in flight are not great

Had a screaming child next to us. Not the airline’s fault but still annoying.

Highly disorganized company, poor customer service. Packed seats on a 737 for a trans-atlantic 9 hour flight. Greedy company policies, no meal or snack provided for 9 hour flight.

Icelandair flight was excellent. The checkin and security arrangements for Saga Premium passengers at Newark was very poor - our checkin opened much later than the normal and our security queue simply led us to the back of the normal queue. Someone was having a laugh surely!

Never took flight. See previous comment on trip from Boston to Reykjavik. Used a different airline that i had to find and book.

The flight was on time and the crew was nice. I did not like the fact that my husband and I were seated in different rows. I feel pressured by airlines to pay more to choose our seats. We will sit anywhere, but we shouldn't have to pay to sit together. I also think they should serve at least a snack that's free.

One of the worst airlines I ever flew. Boarding is a disaster, they are always late, the planes are overly crowded. Everyone on my flight lost their connection because they were 2h late. Reykjavik is also not the best airport out there.

Been travelling for 2mo. And when you meet flight Attendants that love their jobs you can just tell. And makes flying with them worth another flight in the future!!

Everything was great! My only critique is 25 euro for wifi is wild, but I get it

There was a very drunk and disruptive passenger who was on the plane, right behind me. He was already drunk before boarding but was still let on the plane. He kept kicking and hitting the back of my chair the entire flight. It was an early morning flight and had zero rest on that leg

Really lovely trip and flight. The flight staff were so accommodating and warm throughout!

Friendly crew who apologised and explained reason for delay. Good on board service. Rather cramped seating. Late departure.

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

Was not aware that Aer Lingus was like the cut-rate services in the states, with no food or beverage (other then 3.50 Euro coffee) and no screens for entertainment. Was a great flight, but not much in the way of services.

during a very rough flight, I was forced to sit in a last row seat, fell asleep, and was forced to return to my assigned seat after the turbulence. The stewardess then used that seat to sleep.

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.

We couldn't talk to aer lingus we had issues with the flight change and aer lingus made us talk to kayak

Very pleasant staff, there was some turbulence but the captain was very apologetic and gave notice where possible.

Flight was great. Had to wait almost 100 minutes for luggage (some problem in the delivery). This may not be an Aer Lingus problem, but an SFO problem.

Even the carry-ons were not allowed and upon getting down, we had the wait for the longest time for the baggage to put on the jet aisle. We had a short connection which British Airways kept changing and made out entire experience poor. I would never fly BA again.

The seat was very uncomfortable. It helped to use the foot rest. Could not sleep because of the seat.

The seats are incredibly uncomfortable. My luggage didn't make it on the flight from London to Nashville.

The plane itself is old and way overcrowded. The crew do a great job of trying to mitigate. It is just uncomfortable for over 8 hours, bearable, but barely. Boarding, and the baggage game, is ludicrous. Why charge extra to check bags when there is not enough room for everyone to "carry-on" and checking is needed? I do not think these issues would be different with other airlines, I believe it is the attitude that squeezes every penny out of each traveler.

Expected a lot better service paying for a business class seat. Seemed to be short on staff and did not get the service I expected.

I flew Club World and was SHOCKED at how totally absent the crew were for the duration of the flight. So much so that we received no drink service other than the post-departure cocktail and that was it. Wasn't even offered tea/coffee and the in-flight attention was so bad that literally minutes before landing the one crew member for our row was scrambling to pick up left-behind water bottles, glassware, trash. And the rest of the crew had already stowed all carts, he was cramming the trash into the lavatory trash can and was stashing the glassware frantically in the galley as we were on final approach. He was so scrambled he left two overhead lockers wide open (that he'd opened) for landing. Unbelievable!

The flight was several times changed. That was inconvenient, to sah the least.

They lost my special meal request and tried to tell me I didn't request it. I had the proof. Then they tried to get me to eat food I can't eat. No apologies

British airways keeps canceling our flights. I won’t be booking any future flights with them

I could not charge my phone the entire night or read my book, as the whole middle isle was without power.

Book Cheap Chicago Plane Tickets

Recent return flight deals

 
These are the cheapest return flights to Chicago found on KAYAK in the last 72 hours.
1/2Sat
1 stopScandinavian Airlines
13h 30mDUB-ORD
8/2Sat
2 stopsScandinavian Airlines
32h 45mORD-DUB
€333
2/2Sun
1 stopScandinavian Airlines
13h 40mDUB-ORD
28/2Fri
2 stopsScandinavian Airlines
33h 35mORD-DUB
€334
5/3Wed
1 stopIcelandair
11h 50mDUB-ORD
10/3Mon
1 stopIcelandair
9h 45mORD-DUB
€382
14/1Tue
1 stopIcelandair
11h 50mDUB-ORD
21/1Tue
1 stopIcelandair
9h 45mORD-DUB
€383
18/1Sat
1 stopBritish Airways
11h 40mDUB-ORD
25/1Sat
1 stopBritish Airways
11h 15mORD-DUB
€459
13/1Mon
1 stopBritish Airways
23h 25mDUB-ORD
19/1Sun
1 stopBritish Airways
11h 05mORD-DUB
€461
17/1Fri
directAer Lingus
8h 35mDUB-ORD
23/1Thu
directAer Lingus
7h 20mORD-DUB
€465
13/1Mon
directAer Lingus
8h 35mDUB-ORD
19/1Sun
directAer Lingus
7h 15mORD-DUB
€469
15/2Sat
2 stopsUnited Airlines
30h 34mDUB-ORD
23/2Sun
2 stopsUnited Airlines
18h 30mORD-DUB
€512
13/1Mon
1 stopUnited Airlines
11h 48mDUB-ORD
19/1Sun
1 stopUnited Airlines
17h 50mORD-DUB
€575

Search by stops

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Chicago found on KAYAK in the last 72 hours.
20/1Mon
2 stops
46h 34mDUB-ORD
€303
1/4Tue
2 stopsWestJet
16h 31mDUB-ORD
€320
12/3Wed
1 stopIcelandair
11h 50mDUB-ORD
€350
1/4Tue
1 stopIcelandair
12h 05mDUB-ORD
€353
17/2Mon
directAer Lingus
8h 35mDUB-ORD
€396
17/1Fri
directAer Lingus
8h 35mDUB-ORD
€397
17/2Mon
2 stopsBritish Airways
16h 40mDUB-ORD
€469
17/1Fri
1 stopIberia
11h 59mDUB-ORD
€473
18/1Sat
2 stopsBritish Airways
24h 42mDUB-ORD
€505
26/12Thu
1 stopIberia
14h 53mDUB-ORD
€558

Search by stops

Search by airline

Search by price

Last minute flights to Chicago

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Chicago that are departing in the next 10 days.
22/12Sun
multi-stop
33h 30mDUB-ORD
11/1Sat
multi-stop
11h 15mORD-DUB
€617
22/12Sun
multi-stopScandinavian Airlines
33h 45mDUB-ORD
11/1Sat
multi-stopScandinavian Airlines
34h 10mORD-DUB
€620
22/12Sun
multi-stopUnited Airlines
11h 35mDUB-ORD
11/1Sat
multi-stopUnited Airlines
13h 50mORD-DUB
€689
20/12Fri
multi-stopLufthansa
14h 15mDUB-ORD
11/1Sat
multi-stopLufthansa
12h 55mORD-DUB
€741
22/12Sun
multi-stopUnited Airlines
11h 51mDUB-ORD
24/12Tue
multi-stopUnited Airlines
31h 00mORD-DUB
€853
22/12Sun
multi-stopUnited Airlines
15h 18mDUB-ORD
24/12Tue
multi-stopUnited Airlines
39h 03mORD-DUB
€857
22/12Sun
multi-stopAmerican Airlines
12h 40mDUB-ORD
11/1Sat
directAmerican Airlines
7h 20mORD-DUB
€906
20/12Fri
multi-stopAmerican Airlines
14h 10mDUB-ORD
11/1Sat
directAmerican Airlines
7h 20mORD-DUB
€916
20/12Fri
multi-stopUnited Airlines
12h 52mDUB-ORD
11/1Sat
multi-stopUnited Airlines
13h 50mORD-DUB
€938
22/12Sun
directAer Lingus
8h 30mDUB-ORD
11/1Sat
directAer Lingus
7h 20mORD-DUB
€1,325

Search by stops

Search by airline

Search by price

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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