Cheap flights from Ireland to Chicago from £284
This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Chicago departing on 31/10. 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
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Chicago?
The cheapest month to fly to Chicago from Ireland is in November. Flight prices, which tend to average around £375, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Chicago from Ireland during September instead. Flights to Chicago in September, while not as cheap as those in November, still average around £382.
What is the cheapest day to depart on your flight to Chicago?
The cheapest day to depart on your flight to Chicago is on a Tuesday when prices can be found for as low as £519. 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 £602.
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 £476 when looking at flights departing in the evening. Flights at midday are often more expensive, with an average ticket price of £596.
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?
You are more likely to see cheaper flights to Chicago from Ireland when booking 20 weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around £442 when searching 20 weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Ireland for as low as £359 on momondo.
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.
What is the cheapest airline that flies from Ireland to Chicago?
WestJet, JetBlue, and Aer Lingus are the most popular carriers operating from Ireland to Chicago
Which airlines fly to Chicago?
Aer Lingus, Finnair 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 75% 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.
How many flights depart from Ireland to Chicago on average per day?
The number of flights available between Ireland and Chicago is 17 per day as of June 2025. The most frequent departure time is 11:00, with 51% of daily flights leaving at midday.
How many flights depart from Ireland to Chicago on average per week?
As of June 2025, 123 flights take off from Ireland and land in Chicago each week. The most common flight departure day for this route is Thu, with 15% of weekly flights taking off on this day.
Cheap Ireland to Chicago flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ireland to Chicago
When did momondo last update prices for flights from Ireland to Chicago?
Prices for flights from Ireland to Chicago are refreshed on a daily basis.
How many operators does momondo search for flights from Ireland to Chicago?
As of June 2025, there are 6 operators available to choose from for flights from Ireland to Chicago.
How old do you have to be to fly from Ireland 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 layovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Chicago.
What documentation or ID do you need to fly to Chicago?
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.
What is the most popular plane model from Ireland to Chicago?
momondo data reveals that the most frequently booked plane model on the route from Ireland to Chicago is Boeing 787-8 Dreamliner, representing 34.88% of all bookings. The subsequent popular models are Boeing 787 Dreamliner at 23.16%, Airbus A330-300 at 19.99%, and Airbus A330 at 8.63%.
Best airlines flying from Ireland to Chicago
Compare and see reviews for airlines that fly from Ireland to Chicago with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £255 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom £285 | Free Cancellation | Rating 6.6 7,019 reviews | |||
| PriceFrom £288 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom £304 | Free Cancellation | Rating 7.1 1,118 reviews | |||
| PriceFrom £364 | Free Cancellation | Rating 7.6 1,292 reviews | |||
| PriceFrom £372 | Free Cancellation | Rating 7.0 2,778 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Ireland to Chicago?
Finding the right flight to Chicago from Ireland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chicago quick and easy, saving you time and money.
Can I find flights from Ireland to Chicago with flexible booking policies on momondo?
Flights from Ireland to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Ireland to Chicago?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ireland to Chicago.
I’m not ready to book a flight from Ireland to Chicago right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from Ireland and alert you when they change.