Cheap flights from Ireland to Chicago from $341
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 10/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Ireland to Chicago
Recent round-trip flight deals from Ireland to Chicago
Recent one-way flight deals from Ireland to Chicago
Recent last minute flight deals from Ireland to Chicago
Recent direct flight deals from Ireland to Chicago
Finnair flights from Ireland to Chicago O'Hare Intl Airport
Our best Finnair deals on Ireland to Chicago O'Hare Intl Airport flight tickets
United Airlines flights from Ireland to Chicago O'Hare Intl Airport
Our best United Airlines deals on Ireland to Chicago O'Hare Intl Airport flight tickets
See travel insights to Chicago from
How to get the cheapest flight ticket from Ireland to Chicago O'Hare Intl Airport
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 O'Hare Intl Airport?
The month of November is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ireland averaging around $515.
What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?
The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Wednesday when prices can be found for as low as $693. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Ireland because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $828.
What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?
Flying to Chicago O'Hare Intl Airport from Ireland in the morning is the least expensive time of day to depart. momondo users have found prices as low as $746 when looking at flights departing in the morning. Try not to purchase tickets at noon because they tend to be around $863. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest Ireland to Chicago O'Hare Intl flight route?
Fly from Dublin to Chicago O'Hare Intl for the best Ireland - Chicago O'Hare Intl flight prices
How far in advance should I book a flight to Chicago O'Hare Intl Airport?
You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Ireland when booking 20 weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $600 when searching 20 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Ireland for as low as $488 on momondo.
What cabin class options are available on Ireland to Chicago O'Hare Intl flights?
There are 3 cabin classes available to choose from on Ireland to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How many flights depart from Ireland to Chicago O'Hare Intl Airport on average per day?
The number of flights available between Ireland and Chicago O'Hare Intl Airport is 18 per day as of June 2025. The most frequent departure time is 11:00AM, with 50% of daily flights leaving at noon.
How many flights depart from Ireland to Chicago O'Hare Intl Airport on average per week?
As of June 2025, there are 130 flights per week flying from Ireland to Chicago O'Hare Intl Airport. The most common day of the week flights depart is Thu, with 15% of flights taking off on this day.
Cheap Ireland to Chicago O'Hare Intl Airport flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ireland to Chicago O'Hare Intl Airport
When did momondo last update prices for flights from Ireland to Chicago O'Hare Intl Airport?
Prices for flights from Ireland to Chicago O'Hare Intl Airport refresh daily.
How many operators does momondo search for flights from Ireland to Chicago O'Hare Intl Airport?
There are 2 operators available for flights from Ireland to Chicago O'Hare Intl Airport as of June 2025.
How old do you have to be to fly from Ireland to Chicago O'Hare Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ireland to Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The required travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago O'Hare Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Ireland to Chicago O'Hare Intl Airport?
Based on momondo bookings for flights between Ireland and Chicago O'Hare Intl Airport, the leading plane model is Boeing 787-8 Dreamliner, making up 34.88% of the total bookings. Other popular models include Boeing 787 Dreamliner with 23.16%, Airbus A330-300 with 19.99%, and Airbus A330 with 8.63%.
Best airlines flying from Ireland to Chicago O'Hare Intl Airport
Compare and see reviews for airlines that fly from Ireland to Chicago O'Hare Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $408 | Free Cancellation | Rating 7.1 1,118 reviews | |||
| PriceFrom $667 | Free Cancellation | Rating 7.4 8,801 reviews |
Traveling to a place near Chicago?
Book flights to Chicago if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Ireland to Chicago?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ireland to Chicago for you.
Can I find flights from Ireland to Chicago with flexible booking policies on momondo?
momondo does allow users to show only those flights to Chicago from Ireland which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Ireland to Chicago?
momondo helps you find the best flight between Ireland and Chicago by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
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.