Question 1

What is the cheapest month to fly to Chicago?

Accepted Answer

The cheapest month to fly to Chicago from Dublin is in September. 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 September, then you should wait until November to fly from Dublin, when ticket prices are also cheap, with an average price of €401.

Question 2

What is the cheapest airline that flies from Dublin to Chicago?

Accepted Answer

Aer Lingus is the most popular carrier operating from Dublin to Chicago

Question 3

Can stopping save me money on Dublin to Chicago flights?

Accepted Answer

No. A direct flight is the cheapest option for a flight between Dublin to Chicago.

Question 4

Which airline has the best punctuality record on Dublin to Chicago flights?

Accepted Answer

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

Question 5

Which stopover airport has the shortest travel time from Dublin to Chicago?

Accepted Answer

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 11h 25m.

Question 6

Which stopover airport has the shortest connection time from Dublin to Chicago?

Accepted Answer

Washington, D.C. (IAD) has the shortest average stopover time for this route: 0h 56m.

Question 7

Which airport is the most popular for stopovers for flights between Dublin and Chicago?

Accepted Answer

Reykjavik (KEF) was the most common stop: 41% of momondo users choosing one-stop flights on this route connected there.

Question 8

What is the cheapest Dublin to Chicago flight route?

Accepted Answer

Fly from Dublin to Chicago O'Hare Intl for the best Dublin - Chicago flight prices

Question 9

What is the most punctual flight time for Dublin to Chicago flights?

Accepted Answer

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

Question 10

Which airlines fly to Chicago?

Accepted Answer

Aer Lingus, United Airlines and American Airlines are the top three most popular airlines that fly to Chicago from Dublin according to our data. Aer Lingus is the first choice among our users, with 73% of people opting to fly with this airline when travelling to Chicago. Keep in mind that there are 5 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

Question 11

How many flights depart from Dublin to Chicago on average per week?

Accepted Answer

As of December 2025, there are 59 flights per week flying from Dublin to Chicago. The most common day of the week flights depart is Mon, with 22% of flights taking off on this day.

Question 12

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Thursday is statistically the day of the week that experiences the fewest delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

Question 13

How many flights depart from Dublin to Chicago on average per day?

Accepted Answer

The number of flights available between Dublin and Chicago is 8 per day as of December 2025. The most frequent departure time is 10:00, with 75% of daily flights leaving at midday.

Question 14

Which stopover airport offers the lowest fares from Dublin to Chicago?

Accepted Answer

Flights via Copenhagen (CPH) offer the lowest average return price of €374.

Question 15

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 Dublin to Chicago when you can find flight prices for as low as €588. 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 Dublin in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

Question 16

How have Dublin to Chicago flight prices changed over time?

Accepted Answer

As of December 2025, prices for Dublin to Chicago flights are approximately 27% more expensive when compared to flights at the same time last year.

Question 17

How often are flights from Dublin to Chicago delayed?

Accepted Answer

Historically, on average around 12% of flights between Dublin and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 140 minutes.

Question 18

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 Dublin is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as €624. 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 €723.

Question 19

What cabin class options are available on Dublin to Chicago flights?

Accepted Answer

There are 3 cabin classes available to choose from on Dublin to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 20

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

Accepted Answer

You are more likely to see cheaper flights to Chicago from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around €515 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 Dublin for as low as €460 on momondo.

Question 21

When did momondo last update prices for flights from Dublin Airport to Chicago?

Accepted Answer

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

Question 22

How many operators does momondo search for flights from Dublin Airport to Chicago?

Accepted Answer

As of December 2025, there are 5 operators available to choose from for flights from Dublin Airport to Chicago.

Question 23

How old do you have to be to fly from Dublin Airport 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 from Dublin Airport to Chicago.

Question 24

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.

Best price found	€240
Fastest flight time	8h 05m
Direct flights	Every day
Airports in Chicago	3 airports

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom €376	Free Cancellation	Rating 7.0 592 reviews	Search Icelandair flights
Aer Lingus	PriceFrom €387	Free Cancellation	Rating 7.2 1,415 reviews	Search Aer Lingus flights
United Airlines	PriceFrom €394	Free Cancellation	Rating 7.4 9,123 reviews	Search United Airlines flights
British Airways	PriceFrom €396	Free Cancellation	Rating 6.7 7,625 reviews	Search British Airways flights
American Airlines	PriceFrom €506	Free Cancellation	Rating 7.2 11,074 reviews	Search American Airlines flights

Cheap flights from Dublin to Chicago from €376

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dublin to Chicago departing on 17/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Dublin to Chicago

What is the cheapest month to fly to Chicago?

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?

What is the cheapest Dublin to Chicago flight route?

Fly from Dublin to Chicago O'Hare Intl for the best Dublin - Chicago flight prices

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

What cabin class options are available on Dublin to Chicago flights?

There are 3 cabin classes available to choose from on Dublin to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Dublin to Chicago flights?

No. A direct flight is the cheapest option for a flight between Dublin to Chicago.

How have Dublin to Chicago flight prices changed over time?

As of December 2025, prices for Dublin to Chicago flights are approximately 27% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Dublin to Chicago?

Aer Lingus is the most popular carrier operating from Dublin to Chicago

Which airlines fly to Chicago?

How often are flights from Dublin to Chicago delayed?

Historically, on average around 12% of flights between Dublin and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 140 minutes.

What is the most punctual flight time for Dublin to Chicago flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Thursday is statistically the day of the week that experiences the fewest delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Dublin to Chicago flights?

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

Which airport is the most popular for stopovers for flights between Dublin and Chicago?

Reykjavik (KEF) was the most common stop: 41% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from Dublin to Chicago?

Flights via Copenhagen (CPH) offer the lowest average return price of €374.

Which stopover airport has the shortest travel time from Dublin to Chicago?

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 11h 25m.

Which stopover airport has the shortest connection time from Dublin to Chicago?

Washington, D.C. (IAD) has the shortest average stopover time for this route: 0h 56m.

How many flights depart from Dublin to Chicago on average per day?

The number of flights available between Dublin and Chicago is 8 per day as of December 2025. The most frequent departure time is 10:00, with 75% of daily flights leaving at midday.

How many flights depart from Dublin to Chicago on average per week?

As of December 2025, there are 59 flights per week flying from Dublin to Chicago. The most common day of the week flights depart is Mon, with 22% of flights taking off on this day.

When to book flights from Dublin to Chicago

Cheap Dublin to Chicago (DUB to CHI) flight deals and tips

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When did momondo last update prices for flights from Dublin Airport to Chicago?

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How old do you have to be to fly from Dublin Airport to Chicago?

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

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What is the most popular airline from Dublin to Chicago?

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