Cheap flights from Chicago to Ireland from $239
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Ireland departing on 10/16. 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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Scandinavian Airlines flights from Chicago to Ireland
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TAP AIR PORTUGAL flights from Chicago to Ireland
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How to get the cheapest flight ticket from Chicago to Ireland
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 Ireland?
In general, February is the cheapest month to fly from Chicago to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $537. If you aren’t able to travel to Ireland during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $551.
What is the cheapest day to depart on your flight to Ireland?
The cheapest day to depart on your flight to Ireland is on a Tuesday when prices can be found for as low as $732. This is often the case because there is less demand to fly during this day of the week. Flights from Chicago to Ireland on a Friday will generally be more expensive and average around $808. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Ireland?
According to our data, the cheapest time of day to fly to Ireland is in the morning. momondo users have found flights departing from Chicago to Ireland in the morning for as low as $714. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is in the evening when prices are around $766.
What is the cheapest Chicago to Ireland flight route?
Fly from Chicago O'Hare Intl to Shannon for the best Chicago - Ireland flight prices
How far in advance should I book a flight to Ireland?
You are more likely to see cheaper flights to Ireland from Chicago when booking 10 weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $693 when searching 10 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Chicago for as low as $638 on momondo.
What cabin class options are available on Chicago to Ireland flights?
There are 3 cabin classes available to choose from on Chicago to Ireland 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 Chicago to Ireland?
TAP AIR PORTUGAL, Icelandair, and JetBlue are the most popular carriers operating from Chicago to Ireland
What airlines fly to Ireland?
Aer Lingus, United Airlines and American Airlines are the top three most popular airlines that fly to Ireland from Chicago according to our data. Aer Lingus is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 17 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.
How many flights depart from Chicago to Ireland on average per day?
As of June 2025, there are 18 flights per day flying from Chicago to Ireland. The most common time of day flights depart is 10:00PM, with 83% of flights taking off in the evening.
How many flights depart from Chicago to Ireland on average per week?
As of June 2025, 126 flights take off from Chicago and land in Ireland each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.
Cheap Chicago to Ireland flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to Ireland
When did momondo last update prices for flights from Chicago to Ireland?
Prices for flights from Chicago to Ireland refresh daily.
How many operators does momondo search for flights from Chicago to Ireland?
The number of operators available for flights from Chicago to Ireland is 17 as of June 2025.
How old do you have to be to fly from Chicago to Ireland?
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 Chicago to Ireland.
What documentation or ID do you need to fly to Ireland?
The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago to Ireland?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Chicago to Ireland is Boeing 787-8 Dreamliner (46.85% of total bookings). The next most popular plane models are Boeing 787 Dreamliner (15.92%), Airbus A330 (11.06%), and Boeing 787-10 Dreamliner (5.78%).
Best airlines flying from Chicago to Ireland
Compare and see reviews for airlines that fly from Chicago to Ireland with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $355 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom $393 | Free Cancellation | Rating 7.1 1,885 reviews | |||
| PriceFrom $400 | Free Cancellation | Rating 7.3 1,387 reviews | |||
| PriceFrom $445 | Free Cancellation | Rating 7.1 1,117 reviews | |||
| PriceFrom $473 | Free Cancellation | Rating 7.5 1,623 reviews | |||
| PriceFrom $482 | Free Cancellation | Rating 7.8 1,358 reviews | |||
| PriceFrom $489 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $507 | Free Cancellation | Rating 7.0 2,776 reviews | |||
| PriceFrom $519 | Free Cancellation | Rating 6.6 7,008 reviews | |||
| PriceFrom $526 | Free Cancellation | Rating 7.6 1,290 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Chicago to Ireland?
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 Chicago to Ireland for you.
Can I find flights from Chicago to Ireland with flexible booking policies on momondo?
Yes. All flights to Ireland from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Chicago to Ireland?
momondo helps you find the best flight between Chicago and Ireland 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 Chicago to Ireland right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Ireland from 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.