Question 1

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

Accepted Answer

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.

Question 2

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

Accepted Answer

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

Question 3

How can momondo help me find flights to Chicago?

Accepted Answer

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.

Question 4

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

Accepted Answer

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.

Question 5

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

Accepted Answer

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 Grant Park and Magnificent Mile.

Question 6

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

Accepted Answer

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 €504. However, in the past 72 hours, people saw flights from Ireland for as low as €350.

Question 7

Is there an alternative airport near Chicago?

Accepted Answer

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).

Question 8

Is there a cheaper alternative to flying into Chicago?

Accepted Answer

With an average price of €159 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.

Question 9

Are there flights to Grand Boulevard?

Accepted Answer

Yes, you can get a flight ticket to Chicago O'Hare Intl if you want to reach Grand Boulevard. It is the nearest Chicago airport (30.1 km away).

Question 10

What’s the closest airport to Ann and Robert H. Lurie Children's Hospital of Chicago?

Accepted Answer

The closest airport to Ann and Robert H. Lurie Children's Hospital of Chicago is 25.1 km away - Chicago’s Chicago O'Hare Intl airport.

Question 11

Which airlines fly to Chicago?

Accepted Answer

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

Question 12

Aer Lingus Flights to Chicago

Accepted Answer

The most popular airline for flights to Chicago on momondo is Aer Lingus, which operates 47 flights in this direction every week. Most depart out of Dallas/Fort Worth, with the best deal for Aer Lingus flights to Chicago being €393 (return, Dublin to Chicago, momondo searches within the last 72 hours). In 1,442 Aer Lingus reviews, it is rated 7.2 by momondo users.

Question 13

Icelandair Flights to Chicago

Accepted Answer

Icelandair flies to Chicago 4 times per week usually, making it a popular airline to fly with, particularly when heading to Chicago from Reykjavik Keflavik Intl. Icelandair (rating: 7.1, 603 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 (€369 return).

Question 14

When did momondo last update prices for flights to Chicago?

Accepted Answer

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

Question 15

How many operators does momondo search for flights to Chicago?

Accepted Answer

As of January 2026, there are 5 operators available to choose from for flights to Chicago.

Question 16

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

Accepted Answer

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.

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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 €446 on momondo.

Question 19

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

Accepted Answer

On average, the least expensive day to fly to Chicago from Ireland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as €621. 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 €718.

Question 20

How long does it take to fly to Chicago?

Accepted Answer

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 and 14h 20m, respectively.

Question 21

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

Accepted Answer

In the afternoon is the cheapest time of day to fly from Ireland to Chicago when you can find flight prices for as low as €591. Flying to Chicago in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are €666 on average. Flights to Chicago from Ireland in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

Question 22

What is the cheapest month to fly to Chicago?

Accepted Answer

The cheapest month to fly to Chicago from Ireland is in November. Flight prices, which tend to average around €399, are often lower during this time because this is during the off-season. If you don’t want to visit Chicago in November, then you should wait until December to fly from Ireland, when ticket prices are also cheap, with an average price of €434.

CHEAPEST MONTH TO FLY TO CHICAGO FROM DUBLIN	November	21% cheaper	Flying from Dublin to Chicago costs on average just €399 in November
MOST EXPENSIVE MONTH TO FLY TO CHICAGO FROM DUBLIN	July	21% more expensive	It costs about €611 for flights to Chicago from Dublin in July
MOST POPULAR MONTH TO FLY TO CHICAGO FROM DUBLIN	October	308% more users visited	More momondo users searched in flights to Chicago from Dublin in October than any other month

Best One-Way Price	€329
Best Round-Trip Price	€342
Fastest flight time	14h 41m
Popular in	July

€329 Cheap flights to Chicago

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Chicago departing on 25/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ireland to Chicago

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Recent direct flight deals from Ireland to Chicago

momondo Fare Finder

Use the filters below to find and compare flights to Chicago that are best for you.

See travel insights to Chicago from

Chicago flights insights and trends

What is the cheapest month to fly to Chicago?

What is the absolute cheapest flight to Chicago?

See prices from:

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

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

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

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 and 14h 20m, respectively.

Cheapest flights to Chicago

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

Cheap Chicago flight deals and tips

Summary info about Chicago flight prices, duration and airlines

Best One-Way Price

Best Round-Trip Price

Fastest flight time

Popular in

Frequently asked questions about flying to Chicago

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

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

Is there an alternative airport near Chicago?

Is there a cheaper alternative to flying into Chicago?

Are there flights to Grand Boulevard?

What’s the closest airport to Ann and Robert H. Lurie Children's Hospital of Chicago?

When did momondo last update prices for flights to Chicago?

How many operators does momondo search for flights to Chicago?

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

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

Why use momondo?

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

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

How can momondo help me find flights to Chicago?

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

An easier way to manage your Chicago trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Chicago

Popular Flights to Chicago

Popular routes according to searches in the past day on momondo