Question 1

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

Accepted Answer

The number of flights available between Ireland and Chicago is 11 per day as of December 2025. The most frequent departure time is 10:00, with 75% of daily flights leaving at midday.

Question 2

What is the most punctual flight time for Ireland 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 3

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

Accepted Answer

The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as £533. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Chicago is Saturday, with ticket prices averaging around £601.

Question 4

How often are flights from Ireland to Chicago delayed?

Accepted Answer

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

Question 5

What is the cheapest month to fly to Chicago?

Accepted Answer

The cheapest month to fly to Chicago from Ireland is in September. Flight prices, which tend to average around £351, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Chicago from Ireland during November instead. Flights to Chicago in November, while not as cheap as those in September, still average around £353.

Question 6

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

Accepted Answer

As of December 2025, 83 flights take off from Ireland and land in Chicago each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.

Question 7

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

Accepted Answer

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

Question 8

Which airlines fly to Chicago?

Accepted Answer

Aer Lingus, United Airlines and British Airways are the top three most popular airlines that fly to Chicago from Ireland according to our data. Aer Lingus is the first choice among our users, with 71% of people opting to fly with this airline when travelling to Chicago. Keep in mind that there are 6 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

Question 9

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 £452 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 £405 on momondo.

Question 10

Can stopping save me money on Ireland to Chicago flights?

Accepted Answer

You could potentially save up to 15% on your flight if you consider stops on a Ireland to Chicago flight.

Question 11

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

Accepted Answer

Aer Lingus, British Airways, and Delta are the most popular carriers operating from Ireland to Chicago

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

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

Accepted Answer

Flying to Chicago from Ireland in the evening is the least expensive time of day to depart. momondo users have found prices as low as £483 when looking at flights departing in the evening. Flights at midday are often more expensive, with an average ticket price of £598.

Question 14

Which airline has the best punctuality record on Ireland 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 15

What is the cheapest Ireland to Chicago flight route?

Accepted Answer

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

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

As of December 2025, there are 6 operators available to choose from for flights from Ireland to Chicago.

Question 18

How old do you have to be to fly from Ireland 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 layovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Chicago.

Question 19

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

Accepted Answer

The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best price found	£372
Fastest flight time	8h 35m
Direct flights	Every day
Airports in Chicago	3 airports

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom £242	Free Cancellation	Rating 7.0 591 reviews	Search Icelandair flights
British Airways	PriceFrom £300	Free Cancellation	Rating 6.7 7,586 reviews	Search British Airways flights
Finnair	PriceFrom £316	Free Cancellation	Rating 7.6 1,338 reviews	Search Finnair flights
Aer Lingus	PriceFrom £345	Free Cancellation	Rating 7.2 1,399 reviews	Search Aer Lingus flights
United Airlines	PriceFrom £355	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
American Airlines	PriceFrom £455	Free Cancellation	Rating 7.2 11,054 reviews	Search American Airlines flights

Cheap flights from Ireland to Chicago from £330

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Chicago departing on 12/1. 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 Ireland 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?

Flying to Chicago from Ireland in the evening is the least expensive time of day to depart. momondo users have found prices as low as £483 when looking at flights departing in the evening. Flights at midday are often more expensive, with an average ticket price of £598.

What is the cheapest Ireland to Chicago flight route?

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

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

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

There are 3 cabin classes available to choose from on Ireland 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 Ireland to Chicago flights?

You could potentially save up to 15% on your flight if you consider stops on a Ireland to Chicago flight.

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

Aer Lingus, British Airways, and Delta are the most popular carriers operating from Ireland to Chicago

Which airlines fly to Chicago?

How often are flights from Ireland to Chicago delayed?

Historically, on average around 12% of flights between Ireland 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 Ireland 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 Ireland 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.

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

The number of flights available between Ireland and Chicago is 11 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 Ireland to Chicago on average per week?

As of December 2025, 83 flights take off from Ireland and land in Chicago each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.

Cheap Ireland to Chicago flight deals and tips

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

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

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

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

What is the most popular plane model from Ireland to Chicago?

Best airlines flying from Ireland to Chicago

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