ORD - EZE

$271 Find Cheap Flights from Chicago to Buenos Aires

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Buenos Aires departing on 12/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Buenos Aires Ministro Pistarini Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Buenos Aires.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Buenos Aires.
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Everything you should know

Cheapest round-trip
$777
Typical prices: $1,032-$1,251
Multiple Airlines
Wed 2/11Sun 2/22
ORD - EZE • 1 stop
Cheapest one-way
$271
Typical prices: $768-$1,300
Arajet
Mon 12/29
ORD - EZE • 1 stop
Top airlines
Air Canada
Cheapest • from $872 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
7 weeks
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 15% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 16% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Buenos Aires!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Buenos Aires that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to Buenos Aires

Wed, Feb 11 - Sun, Feb 22
Multiple Airlines Logo
5:45 am - 12:05 am
ORD
-
EZE
15h 20m1 stop
Multiple Airlines Logo
4:55 pm - 6:18 pm
EZE
-
ORD
28h 23m2 stops
$777Multiple Airlines
Wed, Feb 25 - Tue, Mar 17
Arajet Logo
5:45 am - 12:05 am
ORD
-
EZE
15h 20m1 stop
Arajet Logo
11:20 am - 11:40 pm
EZE
-
ORD
14h 20m1 stop
$784Arajet
Wed, Feb 11 - Sat, Feb 21
Multiple Airlines Logo
5:45 am - 12:05 am
ORD
-
EZE
15h 20m1 stop
Multiple Airlines Logo
5:25 am - 2:23 pm
EZE
-
ORD
35h 58m3 stops
$785Multiple Airlines
Mon, Jan 26 - Tue, Feb 10
Multiple Airlines Logo
5:45 am - 12:05 am
ORD
-
EZE
15h 20m1 stop
Multiple Airlines Logo
5:25 am - 9:39 am
EZE
-
ORD
55h 14m2 stops
$786Multiple Airlines
Wed, Feb 4 - Mon, Feb 23
Multiple Airlines Logo
5:45 am - 12:05 am
ORD
-
EZE
15h 20m1 stop
Multiple Airlines Logo
4:55 pm - 4:47 pm
EZE
-
ORD
26h 52m2 stops
$806Multiple Airlines
Mon, Jan 19 - Sat, Jan 24
Multiple Airlines Logo
6:57 pm - 6:55 am
ORD
-
EZE
32h 58m3 stops
Multiple Airlines Logo
12:15 pm - 11:22 am
EZE
-
ORD
26h 07m3 stops
$807Multiple Airlines
Mon, Jan 26 - Tue, Feb 10
Arajet Logo
5:45 am - 12:05 am
ORD
-
EZE
15h 20m1 stop
Arajet Logo
11:15 am - 10:40 pm
EZE
-
ORD
14h 25m1 stop
$813Arajet
Mon, Jan 19 - Sat, Jan 24
Multiple Airlines Logo
9:23 am - 10:15 am
ORD
-
EZE
21h 52m2 stops
Multiple Airlines Logo
12:15 pm - 11:22 am
EZE
-
ORD
26h 07m3 stops
$818Multiple Airlines
Wed, Jan 28 - Wed, Feb 4
Multiple Airlines Logo
9:23 am - 10:15 am
ORD
-
EZE
21h 52m2 stops
Multiple Airlines Logo
5:00 pm - 8:20 pm
EZE
-
ORD
30h 20m2 stops
$820Multiple Airlines
Mon, May 4 - Tue, May 5
Multiple Airlines Logo
2:35 pm - 12:22 pm
ORD
-
EZE
19h 47m2 stops
Multiple Airlines Logo
4:45 pm - 6:15 pm
EZE
-
ORD
27h 30m3 stops
$822Multiple Airlines
Booking Insights

KAYAK's insights & trends for Chicago to Buenos Aires flights

Get data-powered insights and trends into flights from Chicago to Buenos Aires to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport departing in February.

What’s the cheapest day of the week to fly from Chicago to Buenos Aires?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Chicago to Buenos Aires, look for departures on Fridays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from Buenos Aires, Monday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport is November, where tickets cost $943 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,318 and $1,299 respectively.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport, you should book around 7 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonJuly
Cheapest flight$271
Most popular time to fly with an average 15% increase in price.
Flight from Chicago to Buenos Aires

When to book flights from Chicago to Buenos Aires

Are your dates flexible? Find out the best times to travel from Chicago to Buenos Aires based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago to Buenos Aires flights

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport was $271 for a one-way ticket and $769 for a round-trip.

  • Do I need a passport to fly between Chicago and Buenos Aires?

    Yes, you’ll need a passport to travel to Buenos Aires from Chicago.

  • Which aircraft models fly most regularly from Chicago to Buenos Aires?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Chicago to Buenos Aires?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Chicago and Buenos Aires, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Chicago to Buenos Aires, Delta or Copa Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to Buenos Aires are Delta and Copa Airlines. With an average price for the route of $1,202 and an overall rating of 7.9, Delta is the most popular choice. Copa Airlines is also a great choice for the route, with an average price of $963 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from Chicago to Buenos Aires?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to Buenos Aires.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to Buenos Aires?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buenos Aires from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to Buenos Aires?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Buenos Aires with an airline and back to Chicago with another airline. Booking your flights between Chicago and EZE can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to Buenos Aires?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Buenos Aires from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Chicago to Buenos Aires

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Buenos Aires. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago to Buenos Aires? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8009 reviews
7.9Comfort
8.5Crew
7.9Entertainment
8.1Boarding
7.3Food
Airline reviews

None of the airplane features were available during the flight.

4.0 OkayAnonymous, Dec 2025
JFK - SDQ
Read more Delta reviews

None of the airplane features were available during the flight.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

The flight was good overall. Everything went smoothly, although the landing was a bit rough. Still, it was a pleasant experience

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

Simply as follows:- First, there was no vegetarian option for the meal Second, only 2 washrooms for the entire economy class.

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

As always, Copa Airlines is great to fly on. The flights are always on time, the staff are pleasant and helpful and it's always a wonderful flying experience.

I selected first class expecting excetional service. It was mediocre at best. The food service was cold, meal choices was poor and on one leg they did provide dessert. I did enjoy the lay day seat but the movies were old and nothing current. Boarding the plane is always hot. So boarding is quite warm until your in the air. I took a small personal air fan. Update the meals and movies.

Very happy with my flight. I would definitely recommend it.

Did upgrade, travel in business it was great (more room I could sleep)

It was ok. However, the food was quite poor since I don't eat pasta.

The movies offered were great. Staff were very pleasant and very efficient.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

We loved the steward on the plane. He made the night enjoyable

The plane was late, when we did board the plane was as cold as a freezer. I was freezing the entire flight, no blankets. Lost miserable flight I’ve ever had.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

I wish American Airlines would change the airline industry by loading the plane back to front instead of front to back. Planes would board so much more smoothly and quickly.

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

I handed in my suitcase in perfect condition at SAL Airport. And in MIA Airport I received it with one corner broken and the wheels bent.

I like the crew members they're very friendly. Clean plane. The flight was on time. I dont like the comfort my car seat its better that the plane seats. They charge for everything. This airline was very good. Now it's a low cost airline

I like the crew they're very friendly. I don't like. on five hour flight they not offered snacks. Any drink. Not even coffee

Not even water is offered on the flight. You cannot lean back on the seats and the seats are so narrow you can’t avoid rubbing elbows with the person next to you.

I couldnt recline the seat. Other than that crew was very attentive and helpful. Thsnk you

I had to go to the boarding counter for them to enter my return flight as it’s not with Avianca. There was a long queue as there were lots of people being called to the counter.

This low cost airline looks and fells more like a local bus. In a 6 hour flight not being able to recline a seat is torture. The only thing available with no charge is a glass of water provided by, mostly, rude staff. Our luggage didn’t arrive

Did not fly with Pakistan International Airlines. Have never flown with Pakistan International Airlines.

Boarding, crew were excellent, food was ok and entertainment need to improve

Usb plugs for charging your phone does not work in every flight. uncomfortable chairs even in higher categories.

Everything you need to know for your flight from Chicago to Buenos Aires

Information on your arrival and departure airports