$318 Cheap Flights from Chicago (ORD) to Buenos Aires (EZE)

View $318 flight on Tue, Jul 15, 2025Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Ministro Pistarini Intl. Airport (EZE)

Find available prices by choosing your travel dates.

Cheap Flights from Chicago to Buenos Aires (ORD-EZE)

Prices were available within the past 7 days and start at $318 for one-way flights and $737 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

avianca
Thu, Jun 12 - Wed, Jun 18
ORD
Chicago
EZE
Buenos Aires
$737 Roundtrip, found 1 hour ago
$737
Roundtrip
found 1 hour ago
Select avianca flight, departing Thu, Jun 12 from Chicago to Buenos Aires, returning Wed, Jun 18, priced at $737 found 1 hour ago
avianca
Thu, Jun 12 - Wed, Jun 18
ORD
Chicago
EZE
Buenos Aires
$748 Roundtrip, found 1 hour ago
$748
Roundtrip
found 1 hour ago
Select avianca flight, departing Thu, Jun 12 from Chicago to Buenos Aires, returning Wed, Jun 18, priced at $748 found 1 hour ago
avianca
Tue, Jul 15 - Thu, Jul 31
ORD
Chicago
EZE
Buenos Aires
$768 Roundtrip, found 3 hours ago
$768
Roundtrip
found 3 hours ago
Select avianca flight, departing Tue, Jul 15 from Chicago to Buenos Aires, returning Thu, Jul 31, priced at $768 found 3 hours ago
Copa
Wed, Aug 20 - Mon, Aug 25
ORD
Chicago
EZE
Buenos Aires
$779 Roundtrip, just found
$779
Roundtrip
just found
Select Copa flight, departing Wed, Aug 20 from Chicago to Buenos Aires, returning Mon, Aug 25, priced at $779 just found
avianca
Thu, Jun 12 - Wed, Jun 18
ORD
Chicago
EZE
Buenos Aires
$785 Roundtrip, found 1 hour ago
$785
Roundtrip
found 1 hour ago
Select avianca flight, departing Thu, Jun 12 from Chicago to Buenos Aires, returning Wed, Jun 18, priced at $785 found 1 hour ago
avianca
Sat, Jul 5 - Sat, Jul 19
ORD
Chicago
EZE
Buenos Aires
$798 Roundtrip, found 3 days ago
$798
Roundtrip
found 3 days ago
Select avianca flight, departing Sat, Jul 5 from Chicago to Buenos Aires, returning Sat, Jul 19, priced at $798 found 3 days ago
Copa
Tue, Jul 15 - Thu, Jul 31
ORD
Chicago
EZE
Buenos Aires
$799 Roundtrip, found 3 hours ago
$799
Roundtrip
found 3 hours ago
Select Copa flight, departing Tue, Jul 15 from Chicago to Buenos Aires, returning Thu, Jul 31, priced at $799 found 3 hours ago
Air Canada
Tue, Sep 9 - Wed, Sep 17
ORD
Chicago
EZE
Buenos Aires
$924 Roundtrip, found 11 hours ago
$924
Roundtrip
found 11 hours ago
Select Air Canada flight, departing Tue, Sep 9 from Chicago to Buenos Aires, returning Wed, Sep 17, priced at $924 found 11 hours ago
American Airlines
Wed, Jun 18 - Wed, Jun 25
ORD
Chicago
EZE
Buenos Aires
$1,025 Roundtrip, found 1 hour ago
$1,025
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Wed, Jun 18 from Chicago to Buenos Aires, returning Wed, Jun 25, priced at $1,025 found 1 hour ago
Delta
Wed, Jun 18 - Wed, Jun 25
ORD
Chicago
EZE
Buenos Aires
$1,025 Roundtrip, found 1 hour ago
$1,025
Roundtrip
found 1 hour ago
Select Delta flight, departing Wed, Jun 18 from Chicago to Buenos Aires, returning Wed, Jun 25, priced at $1,025 found 1 hour ago
Flights from Chicago (ORD) to Buenos Aires (EZE)
Origin airport
O'Hare Intl.
Destination airport
Ministro Pistarini Intl.
Airlines serving
Aeromexico, Air Canada, American Airlines, Copa, Delta, GOL Linhas Aereas S.A., LATAM Airlines Group, United, avianca
Roundtrip price
$736
Distance
5621 mi

Chicago to Buenos Aires Flights

The cheapest times to fly from Chicago to Buenos Aires

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to Buenos Aires are during the month of June. You can find some of the cheapest flights from Chicago to Buenos Aires with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Chicago to Buenos Aires

Sunday is one of the best days to book for cheap flights from Chicago to Buenos Aires: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Chicago to Buenos Aires

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to Buenos Aires in 2025. You can also book with separate airlines for your outbound and return journeys, from $318 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to Buenos Aires flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to Buenos Aires airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Ministro Pistarini Intl. Airport (EZE) cost?
Discover the latest flight deals from ORD to EZE by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ORD to EZE?
The cheapest flights from ORD to EZE are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ORD to EZE?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from ORD to EZE. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from O'Hare Intl. Airport (ORD) to Ministro Pistarini Intl. Airport (EZE)?
Nonstop flights from O’Hare Intl. Airport (ORD) to Ministro Pistarini Intl. Airport (EZE) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with Expedia’s filters. Enter your dates and pick either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from ORD to EZE?
You’ll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from O'Hare Intl. Airport (ORD) to Ministro Pistarini Intl. Airport (EZE)?
Book a flight from O’Hare Intl. Airport (ORD) to Ministro Pistarini Intl. Airport (EZE) that takes off before 3 PM to reduce the risk of delays and cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to Ministro Pistarini Intl. Airport (EZE) last-minute?
Booking your plane ticket from ORD to EZE just before your journey is generally more expensive. However, if there’s some wiggle room with your travel times and dates, you could land a cheap last-minute fare.
Is it cheaper to book an ORD to EZE flight and hotel package?
Opting for an ORD to EZE flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our wide range of accommodations and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Ministro Pistarini Intl. Airport (EZE)?
If you booked your ORD to EZE flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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*Available to One Key members.