$271 Cheap Flights from Chicago (ORD) to Buenos Aires (EZE)

View $271 flight on Mon, Mar 30, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $271 for one-way flights and $625 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Arajet
Mon, Mar 30 - Tue, Apr 14
ORD
Chicago
EZE
Buenos Aires
$625 Roundtrip, just found
$625
Roundtrip
just found
Select Arajet flight, departing Mon, Mar 30 from Chicago to Buenos Aires, returning Tue, Apr 14, priced at $625 just found
Arajet
Sat, Nov 29 - Sun, Dec 14
ORD
Chicago
EZE
Buenos Aires
$639 Roundtrip, just found
$639
Roundtrip
just found
Select Arajet flight, departing Sat, Nov 29 from Chicago to Buenos Aires, returning Sun, Dec 14, priced at $639 just found
Arajet
Mon, Apr 20 - Sun, Apr 26
ORD
Chicago
EZE
Buenos Aires
$671 Roundtrip, found 1 hour ago
$671
Roundtrip
found 1 hour ago
Select Arajet flight, departing Mon, Apr 20 from Chicago to Buenos Aires, returning Sun, Apr 26, priced at $671 found 1 hour ago
Arajet
Mon, Mar 30 - Tue, Apr 7
ORD
Chicago
EZE
Buenos Aires
$697 Roundtrip, found 12 hours ago
$697
Roundtrip
found 12 hours ago
Select Arajet flight, departing Mon, Mar 30 from Chicago to Buenos Aires, returning Tue, Apr 7, priced at $697 found 12 hours ago
Arajet
Mon, Mar 30 - Tue, Apr 14
ORD
Chicago
EZE
Buenos Aires
$702 Roundtrip, just found
$702
Roundtrip
just found
Select Arajet flight, departing Mon, Mar 30 from Chicago to Buenos Aires, returning Tue, Apr 14, priced at $702 just found
Arajet
Mon, Mar 30 - Sun, Apr 12
ORD
Chicago
EZE
Buenos Aires
$705 Roundtrip, found 4 days ago
$705
Roundtrip
found 4 days ago
Select Arajet flight, departing Mon, Mar 30 from Chicago to Buenos Aires, returning Sun, Apr 12, priced at $705 found 4 days ago
Air Canada
Fri, Mar 6 - Mon, Mar 16
ORD
Chicago
EZE
Buenos Aires
$861 Roundtrip, found 3 days ago
$861
Roundtrip
found 3 days ago
Select Air Canada flight, departing Fri, Mar 6 from Chicago to Buenos Aires, returning Mon, Mar 16, priced at $861 found 3 days ago
Copa
Mon, Dec 1 - Wed, Dec 10
ORD
Chicago
EZE
Buenos Aires
$890 Roundtrip, just found
$890
Roundtrip
just found
Select Copa flight, departing Mon, Dec 1 from Chicago to Buenos Aires, returning Wed, Dec 10, priced at $890 just found
avianca
Fri, Nov 14 - Wed, Nov 26
ORD
Chicago
EZE
Buenos Aires
$897 Roundtrip, found 1 hour ago
$897
Roundtrip
found 1 hour ago
Select avianca flight, departing Fri, Nov 14 from Chicago to Buenos Aires, returning Wed, Nov 26, priced at $897 found 1 hour ago
American Airlines
Mon, Dec 1 - Wed, Dec 10
ORD
Chicago
EZE
Buenos Aires
$902 Roundtrip, just found
$902
Roundtrip
just found
Select American Airlines flight, departing Mon, Dec 1 from Chicago to Buenos Aires, returning Wed, Dec 10, priced at $902 just found

Find the cheapest month to fly from Chicago (ORD) to Buenos Aires (EZE)

September is typically the cheapest month to fly

From $688 - $1,070 per traveler.

Alternative airports near Buenos Aires

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Aeroparque Jorge Newbery AEP. Closest option available. Average driving time to city center is 11 minutes. Flights from $957
AEP
Aeroparque Jorge Newbery
Closest
Average driving time to city center11 min
Flights from $957
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, Arajet, Copa, Delta, GOL Linhas Aereas S.A., Hahn Air Technologies, LATAM Airlines Group, United, World Ticket Ltd, avianca
Roundtrip price
$625
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 March. 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 $271 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?
Get a cheap one-way flight from $271 or cheap return flight from $625 from O'Hare Intl. Airport (ORD) to Ministro Pistarini Intl. Airport (EZE) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to Ministro Pistarini Intl. Airport (EZE)?
The cheapest month to fly from ORD to EZE is March, when there's less demand. Off-peak months are generally when better flight deals are available between these airports.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to Ministro Pistarini Intl. Airport (EZE)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest ORD to EZE flight.
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.