Which airlines fly to Chicago?

Based on our data, the most popular airlines that fly to Chicago from Ireland are Aer Lingus, United Airlines, British Airways and Icelandair. There may also be other airline options depending on where in Ireland you’re flying from.

Aer Lingus Flights to Chicago

The most popular airline for flights to Chicago on momondo is Aer Lingus, which operates 50 flights in this direction every week. Most depart out of Dallas/Fort Worth, with the best deal for Aer Lingus flights to Chicago being €392 (return, Dublin to Chicago, momondo searches within the last 72 hours). In 1,366 Aer Lingus reviews, it is rated 7.2 by momondo users.

Icelandair Flights to Chicago

Icelandair flies to Chicago 5 times per week usually, making it a popular airline to fly with, particularly when heading to Chicago from Reykjavik Keflavik Intl. Icelandair (rating: 7.0, 574 reviews) varies in price depending on when and where you want to fly to Chicago from. The best Icelandair ticket price found on momondo to Chicago was from Dublin (€378 return).

How long does it take to fly to Chicago?

If you’re flying from a popular airport in Ireland, such as Dublin or Cork, and flying into Chicago, then you can expect flight times to average 8h 05m and 15h 20m, respectively.

€379 Cheap Flights to Chicago in 2025/26

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Find the cheapest flights from Ireland to Chicago

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One-way

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Cheap return flights

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11:30 - 16:45DUB-ORD

35h 15m2 stops

19:20 - 18:10ORD-DUB

16h 50m2 stops

€393Scandinavian Airlines

Find Deal

Do, 12 Feb - Do, 26 Feb

11:15 - 16:45DUB-ORD

35h 30m2 stops

19:20 - 09:25ORD-DUB

32h 05m1 stop

€393Scandinavian Airlines

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Do, 12 Feb - Do, 26 Feb

10:10 - 16:55DUB-ORD

12h 45m1 stop

19:10 - 18:20ORD-DUB

17h 10m1 stop

€394Scandinavian Airlines

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So, 8 Feb - So, 15 Feb

10:30 - 17:00DUB-ORD

12h 30m1 stop

18:25 - 12:05ORD-DUB

11h 40m1 stop

€396American Airlines

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Do, 20 Nov - Fr, 28 Nov

11:30 - 20:20DUB-ORD

14h 50m2 stops

18:45 - 17:00ORD-DUB

16h 15m1 stop

€404American Airlines

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Do, 5 Feb - Di, 17 Feb

09:00 - 17:48DUB-ORD

14h 48m1 stop

18:35 - 08:10ORD-DUB

7h 35mdirect

€409United Airlines

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Fr, 27 Feb - Mi, 4 Mrz

09:00 - 15:10DUB-ORD

12h 10m1 stop

18:35 - 08:10ORD-DUB

7h 35mdirect

€410United Airlines

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Fr, 6 Feb - Sa, 14 Feb

16:40 - 19:15DUB-ORD

8h 35mdirect

21:00 - 10:20ORD-DUB

7h 20mdirect

€417Aer Lingus

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Mo, 2 Mrz - Sa, 7 Mrz

16:40 - 19:15DUB-ORD

8h 35mdirect

21:00 - 10:20ORD-DUB

7h 20mdirect

€424Aer Lingus

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Mi, 11 Feb - So, 15 Feb

11:30 - 17:20DUB-ORD

11h 50m1 stop

18:30 - 10:15ORD-DUB

9h 45m1 stop

€441Icelandair

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So, 8 Feb - Fr, 13 Feb

Fly from

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Do 12/2

11:30-16:45

2 stops35h 15m

Chicago O'Hare Intl

Do 26/2

19:20-18:10

2 stops16h 50m

€393

DublinChicago

DUB - ORD

DUBORD

Dublin

Do 12/2

11:15-16:45

2 stops35h 30m

Chicago O'Hare Intl

Do 26/2

19:20-09:25

1 stop32h 05m

€393

DublinChicago

DUB - ORD

DUBORD

Dublin

So 8/2

10:10-16:55

1 stop12h 45m

Chicago O'Hare Intl

So 15/2

19:10-18:20

1 stop17h 10m

€394

DublinChicago

DUB - ORD

DUBORD

Dublin

Do 20/11

10:30-17:00

1 stop12h 30m

Chicago O'Hare Intl

Fr 28/11

18:25-12:05

1 stop11h 40m

€396

DublinChicago

DUB - ORD

DUBORD

Dublin

Do 5/2

11:30-20:20

2 stops14h 50m

Chicago O'Hare Intl

Di 17/2

18:45-17:00

1 stop16h 15m

€404

DublinChicago

DUB - ORD

DUBORD

Dublin

Fr 27/2

09:00-17:48

1 stop14h 48m

Chicago O'Hare Intl

Mi 4/3

18:35-08:10

Nonstop7h 35m

€409

DublinChicago

DUB - ORD

DUBORD

Dublin

Fr 6/2

09:00-15:10

1 stop12h 10m

Chicago O'Hare Intl

Sa 14/2

18:35-08:10

Nonstop7h 35m

€410

DublinChicago

DUB - ORD

DUBORD

Dublin

Mo 2/3

16:40-19:15

Nonstop8h 35m

Chicago O'Hare Intl

Sa 7/3

21:00-10:20

Nonstop7h 20m

€417

DublinChicago

DUB - ORD

DUBORD

Dublin

Mi 11/2

16:40-19:15

Nonstop8h 35m

Chicago O'Hare Intl

So 15/2

21:00-10:20

Nonstop7h 20m

€424

DublinChicago

DUB - ORD

DUBORD

Dublin

So 8/2

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Fr 13/2

18:30-10:15

1 stop9h 45m

€441

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Chicago flights insights and trends

Explore insights for your Chicago flight to craft the best travel plan

Prices

Other information

What is the cheapest month to fly to Chicago?

The cheapest month to fly to Chicago from Ireland is in September. Flight prices, which tend to average around €408, are often lower during this time because this is during the off-season. If you don’t want to visit Chicago in September, then you should wait until November to fly from Ireland, when ticket prices are also cheap, with an average price of €413.

What is the absolute cheapest flight to Chicago?

See prices from:

What is the cheapest day to depart on your flight to Chicago?

On average, the least expensive day to fly to Chicago from Ireland is on a Friday. momondo users have found tickets for Friday departures for as low as €635. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Chicago on Tuesday is €732.

What is the cheapest time of day to depart on your flight to Chicago?

In the evening is the cheapest time of day to fly from Ireland to Chicago when you can find flight prices for as low as €524. Flying to Chicago in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at midday when prices are €682 on average. Flights to Chicago from Ireland at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Chicago from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around €520 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Ireland for as low as €469 on momondo.

Cheapest flights to Chicago

Find the cheapest flights to Chicago from your nearest city or airport

Find flights from Dublin to Chicago O'Hare Intl Airport

CHEAPEST MONTH TO FLY TO CHICAGO FROM DUBLIN	September	18% cheaper	Flying from Dublin to Chicago costs on average just €408 in September
MOST EXPENSIVE MONTH TO FLY TO CHICAGO FROM DUBLIN	July	22% more expensive	It costs about €607 for flights to Chicago from Dublin in July
MOST POPULAR MONTH TO FLY TO CHICAGO FROM DUBLIN	October	315% more users visited	More momondo users searched in flights to Chicago from Dublin in October than any other month

Cheap Chicago flight deals and tips

Summary info about Chicago flight prices, duration and airlines

Best One-Way Price	€379
Best Round-Trip Price	€393
Fastest flight time	8h 25m
Popular in	July

The best one-way flight price to Chicago from Ireland in the last 72 hours is €379 (Dublin to Chicago O'Hare Intl).

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The best round-trip flight price to Chicago from Ireland in the last 72 hours is €393 (Dublin to Chicago O'Hare Intl).

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The fastest flight to Chicago from Ireland takes 8h 25m (Dublin to Chicago O'Hare Intl).

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July has the highest demand for flights to Chicago, with a 15% price increase on average.

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Frequently asked questions about flying to Chicago

When is it best to fly to Chicago to go sightseeing?

The city of Chicago has many sights to see while visiting. Many tourists find it ideal to go sightseeing when the weather is warmer, but not blistering. Consider booking your flight to Chicago for May or June, when temperatures are a bit higher and the chance of rain is relatively low. Many travellers find it worthwhile to visit Art Institute of Chicago, Grant Park, and Magnificent Mile.

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

We recommend purchasing flights from Ireland to Chicago 62 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to Chicago for €497. However, in the past 72 hours, people saw flights from Ireland for as low as €324.

Is there an alternative airport near Chicago?

Finding an alternative and possibly cheaper destination airport near Chicago is possible. If you are planning a flight to Chicago, consider booking flights to Chicago Midway Airport (14 km from Chicago city centre) or Chicago Greater Rockford Airport (126 km from Chicago city centre).

Is there a cheaper alternative to flying into Chicago?

With an average price of €187 per person, Chicago Midway Airport is the cheapest airport to fly into when planning your trip to Chicago. This price can fluctuate based on where you are flying from. momondo’s Airport-to-Airport Pricing Tool can help users find the best prices.

Are there flights to Grand Boulevard?

Yes, you can get a flight ticket to Chicago Midway if you want to reach Grand Boulevard. It is the nearest Chicago airport (11.0 km away).

What’s the closest airport to Art Institute of Chicago?

The closest airport to Art Institute of Chicago is 14.4 km away - Chicago’s Chicago Midway airport.

When did momondo last update prices for flights to Chicago?

Prices for flights to Chicago are refreshed on a daily basis.

How many operators does momondo search for flights to Chicago?

As of November 2025, there are 7 operators available to choose from for flights to Chicago.

How old do you have to be to fly to Chicago?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel to Chicago.

What documentation or ID do you need to fly to Chicago?

The travel and health documents required for your trip to Chicago can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Chicago. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal to Chicago?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights to Chicago. Millions of users trust and use momondo every year so you are in good company.

Can I find flights to Chicago with flexible booking policies on momondo?

Yes. All flights to Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights to Chicago?

Once you have performed a search for flights to Chicago, momondo helps you find the right flight by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight to Chicago right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.