Find Cheap Flights from Chicago to Buenos Aires (CHI - BUE)

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Good to Know

Low Season:
November
Best time to beat the crowds
2%
expected price decrease
High Season:
July
Most popular time to fly
9%
expected price increase
Average Price:
$1385
(avg. price over the last 2 weeks)
Good Deal:
$1048
or less (round trip)

When to Book Flights from Chicago to Buenos Aires

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $1048 or less.
The cheapest flight from Chicago to Buenos Aires was found 49 days before departure, on average.
Book at least 5 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is November.
Morning departure is around 18% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Chicago to Buenos Aires Flights

How long does a flight from Chicago to Buenos Aires take?
An average nonstop flight takes 17h 05m, covering a distance of 5600 miles.
Which airlines provide the cheapest flights from Chicago to Buenos Aires?
In the past 3 days, the cheapest round-trip tickets were found on Aeromexico ($860) and Multiple Airlines ($1040)
Do I need a passport to fly between Chicago and Buenos Aires?
Yes.
What’s the cheapest day of the week to fly Chicago to Buenos Aires?
For Chicago to Buenos Aires, Wednesday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Buenos Aires back to Chicago, the best deals are generally found on Saturday, with Thursday being the most expensive.

Book cheap flights from Chicago to Buenos Aires (round-trip)

Airports
Origin
Chicago
$860
only
$860
Destination
Buenos Aires
$860
only
$860
Wed, Jan 17
ORD
EZE
19h 00m
Thu, Feb 15
EZE
ORD
36h 45m
Trip: 30 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
GDL
MEX
Okay 5.3

the boarding time was delayed, the airplane, although the seat was comfortable, the aircraft was small, therefore, it lacked space for all carry-ons. the entertainment, even though it was innovative, if your computer lacked the correct programs you could not run it.

PDX
MEX
Good 7.6

Flight on time. Lots of legroom. (Exit row.)

Chaotic boarding.

MEX
SEA
Mediocre 2.0

Nothing they cancelled my connecting flight

First time flying with Aeromexico and it will be my last. The cancelled the flight just when we are about to board and have not responded or compensated me for my substitute flight to get home.

MEX
IAD
Good 6.0

Same

Same

MEX
UIO
Good 7.6

We got an upgrade to 1st class. However because it’s an older plane, 1st class was just recliner seats. This was an overnight flight, so anything helped. It would have been nicer to have seats lay further back in 1st class. We did not have food since we slept the whole way.

Fri, May 4
ORD
EZE
25h 15m
Tue, May 15
EZE
ORD
35h 35m
$1040
Trip: 12 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Jan 18
ORD
EZE
19h 00m
Thu, Feb 15
EZE
ORD
36h 45m
Trip: 29 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
JFK
MEX
Mediocre 2.0

Nothing

They would not let me board the plan even though I made 30 minutes early. Our connecting flight was late. My bags made the flight and I wasn't allowed on.

MEX
IAD
Good 6.0

Same

Same

MEX
JFK
Excellent 9.6

Flight attendant Antonio was great! Friendly, funny and kind.

PDX
MEX
Good 7.6

Flight on time. Lots of legroom. (Exit row.)

Chaotic boarding.

MEX
UIO
Good 7.6

We got an upgrade to 1st class. However because it’s an older plane, 1st class was just recliner seats. This was an overnight flight, so anything helped. It would have been nicer to have seats lay further back in 1st class. We did not have food since we slept the whole way.

Mon, Jan 22
ORD
EZE
19h 00m
Tue, Feb 20
EZE
ORD
27h 20m
Trip: 30 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
MEX
JFK
Excellent 9.6

Flight attendant Antonio was great! Friendly, funny and kind.

SJO
MEX
Excellent 8.6

Great seats with individual screens for free movies

No vegetarian option Long back up at Mexico City customs

ORD
GDL
Mediocre 3.3

old plane, no amenities to make the flight pleasant.

SFO
MEX
Good 7.3

I like that there are USB charging ports under the tv for every seat.

MEX
YVR
Good 6.6

The crew was very nice.

The screen at my seat did not work. Nobody told me why or mentioned it to me. While I was sleeping a flight attendant took away my tray of food before I was finishing eating.

Wed, Jan 24
ORD
EZE
17h 05m
Tue, Feb 20
EZE
ORD
27h 20m
Trip: 28 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
SFO
MEX
Good 7.3

I like that there are USB charging ports under the tv for every seat.

MEX
UIO
Good 7.6

We got an upgrade to 1st class. However because it’s an older plane, 1st class was just recliner seats. This was an overnight flight, so anything helped. It would have been nicer to have seats lay further back in 1st class. We did not have food since we slept the whole way.

MEX
JFK
Excellent 9.6

Flight attendant Antonio was great! Friendly, funny and kind.

JFK
MEX
Mediocre 2.0

Nothing

They would not let me board the plan even though I made 30 minutes early. Our connecting flight was late. My bags made the flight and I wasn't allowed on.

SJO
MEX
Excellent 8.6

Great seats with individual screens for free movies

No vegetarian option Long back up at Mexico City customs

Thu, Feb 1
ORD
EZE
36h 20m
Mon, Feb 5
EZE
ORD
20h 55m
$1081
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Feb 8
ORD
EZE
28h 20m
Fri, Feb 16
EZE
ORD
27h 20m
Trip: 9 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
ORD
GDL
Mediocre 3.3

old plane, no amenities to make the flight pleasant.

MEX
SEA
Mediocre 2.0

Nothing they cancelled my connecting flight

First time flying with Aeromexico and it will be my last. The cancelled the flight just when we are about to board and have not responded or compensated me for my substitute flight to get home.

PDX
MEX
Good 7.6

Flight on time. Lots of legroom. (Exit row.)

Chaotic boarding.

SJO
MEX
Excellent 8.6

Great seats with individual screens for free movies

No vegetarian option Long back up at Mexico City customs

MEX
JFK
Excellent 9.6

Flight attendant Antonio was great! Friendly, funny and kind.

Tue, Jan 23
ORD
EZE
51h 05m
Sun, Feb 11
EZE
ORD
20h 55m
$1101
Trip: 20 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Feb 2
ORD
EZE
28h 20m
Fri, Feb 16
EZE
ORD
27h 20m
Trip: 15 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
ORD
GDL
Mediocre 3.3

old plane, no amenities to make the flight pleasant.

MEX
IAD
Good 6.0

Same

Same

ACA
MEX
Good 6.0

Smooth flight

People make you feel dumb when you have a question or they need to repeat something they mentioned before. Is very hard to understand sometimes trough the speaker.

MEX
YVR
Good 6.6

The crew was very nice.

The screen at my seat did not work. Nobody told me why or mentioned it to me. While I was sleeping a flight attendant took away my tray of food before I was finishing eating.

PDX
MEX
Good 7.6

Flight on time. Lots of legroom. (Exit row.)

Chaotic boarding.

Wed, Feb 7
ORD
EZE
48h 10m
Wed, Feb 14
EZE
ORD
32h 45m
$1101
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Feb 13
ORD
EZE
28h 15m
Mon, Feb 19
EZE
ORD
27h 20m
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
SJO
MEX
Excellent 8.6

Great seats with individual screens for free movies

No vegetarian option Long back up at Mexico City customs

SFO
MEX
Good 7.3

I like that there are USB charging ports under the tv for every seat.

MEX
IAD
Good 6.0

Same

Same

MEX
UIO
Good 7.6

We got an upgrade to 1st class. However because it’s an older plane, 1st class was just recliner seats. This was an overnight flight, so anything helped. It would have been nicer to have seats lay further back in 1st class. We did not have food since we slept the whole way.

GDL
MEX
Okay 5.3

the boarding time was delayed, the airplane, although the seat was comfortable, the aircraft was small, therefore, it lacked space for all carry-ons. the entertainment, even though it was innovative, if your computer lacked the correct programs you could not run it.

Thu, Feb 8
ORD
EZE
48h 10m
Sun, Feb 18
EZE
ORD
32h 45m
$1101
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Feb 17
ORD
EZE
48h 10m
Sun, Feb 25
EZE
ORD
32h 45m
$1101
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Jan 19
ORD
EZE
19h 00m
Fri, Feb 16
EZE
ORD
27h 20m
Trip: 29 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
ACA
MEX
Good 6.0

Smooth flight

People make you feel dumb when you have a question or they need to repeat something they mentioned before. Is very hard to understand sometimes trough the speaker.

MEX
YVR
Good 6.6

The crew was very nice.

The screen at my seat did not work. Nobody told me why or mentioned it to me. While I was sleeping a flight attendant took away my tray of food before I was finishing eating.

SFO
MEX
Good 7.3

I like that there are USB charging ports under the tv for every seat.

PDX
MEX
Good 7.6

Flight on time. Lots of legroom. (Exit row.)

Chaotic boarding.

SJO
MEX
Excellent 8.6

Great seats with individual screens for free movies

No vegetarian option Long back up at Mexico City customs

Fri, Jan 26
ORD
EZE
28h 15m
Tue, Feb 13
EZE
ORD
36h 45m
Trip: 19 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
MEX
SEA
Mediocre 2.0

Nothing they cancelled my connecting flight

First time flying with Aeromexico and it will be my last. The cancelled the flight just when we are about to board and have not responded or compensated me for my substitute flight to get home.

ORD
GDL
Mediocre 3.3

old plane, no amenities to make the flight pleasant.

JFK
MEX
Mediocre 2.0

Nothing

They would not let me board the plan even though I made 30 minutes early. Our connecting flight was late. My bags made the flight and I wasn't allowed on.

MEX
IAD
Good 6.0

Same

Same

SJO
MEX
Excellent 8.6

Great seats with individual screens for free movies

No vegetarian option Long back up at Mexico City customs

Fri, Jan 26
ORD
EZE
24h 10m
Thu, Feb 8
EZE
ORD
20h 55m
$1107
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Feb 1
ORD
EZE
28h 20m
Tue, Feb 20
EZE
ORD
27h 20m
Trip: 20 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
MEX
SEA
Mediocre 2.0

Nothing they cancelled my connecting flight

First time flying with Aeromexico and it will be my last. The cancelled the flight just when we are about to board and have not responded or compensated me for my substitute flight to get home.

SJO
MEX
Excellent 8.6

Great seats with individual screens for free movies

No vegetarian option Long back up at Mexico City customs

GDL
MEX
Okay 5.3

the boarding time was delayed, the airplane, although the seat was comfortable, the aircraft was small, therefore, it lacked space for all carry-ons. the entertainment, even though it was innovative, if your computer lacked the correct programs you could not run it.

MEX
UIO
Good 7.6

We got an upgrade to 1st class. However because it’s an older plane, 1st class was just recliner seats. This was an overnight flight, so anything helped. It would have been nicer to have seats lay further back in 1st class. We did not have food since we slept the whole way.

MEX
YVR
Good 6.6

The crew was very nice.

The screen at my seat did not work. Nobody told me why or mentioned it to me. While I was sleeping a flight attendant took away my tray of food before I was finishing eating.

Mon, Apr 30
ORD
EZE
49h 15m
Mon, May 21
EZE
ORD
20h 10m
$1112
Trip: 22 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Feb 2
ORD
EZE
28h 20m
Tue, Feb 20
EZE
ORD
27h 20m
Trip: 19 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4639 reviews
Overall
7.4
Boarding
7.4
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
MEX
SEA
Mediocre 2.0

Nothing they cancelled my connecting flight

First time flying with Aeromexico and it will be my last. The cancelled the flight just when we are about to board and have not responded or compensated me for my substitute flight to get home.

MEX
YVR
Good 6.6

The crew was very nice.

The screen at my seat did not work. Nobody told me why or mentioned it to me. While I was sleeping a flight attendant took away my tray of food before I was finishing eating.

JFK
MEX
Mediocre 2.0

Nothing

They would not let me board the plan even though I made 30 minutes early. Our connecting flight was late. My bags made the flight and I wasn't allowed on.

GDL
MEX
Okay 5.3

the boarding time was delayed, the airplane, although the seat was comfortable, the aircraft was small, therefore, it lacked space for all carry-ons. the entertainment, even though it was innovative, if your computer lacked the correct programs you could not run it.

PDX
MEX
Good 7.6

Flight on time. Lots of legroom. (Exit row.)

Chaotic boarding.

Tue, Jan 23
ORD
EZE
51h 05m
Sun, Jan 28
EZE
ORD
32h 45m
$1122
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
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*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.