Find Cheap Flights from Chicago O'Hare International to Buenos Aires (ORD - BUE)

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Good to Know

Low Season:
May
Best time to beat the crowds
2%
expected price decrease
High Season:
July
Most popular time to fly
5%
expected price increase
Average Price:
$1492
(avg. price over the last 2 weeks)
Good Deal:
$1073
or less (round trip)

When to Book Flights from Chicago O'Hare International 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 $1072 or less.
The cheapest flight from Chicago O'Hare International to Buenos Aires was found 72 days before departure, on average.
Book at least 4 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 May.
Morning departure is around 25% 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 O'Hare International to Buenos Aires Flights

How long does a flight from Chicago O'Hare International to Buenos Aires take?
An average nonstop flight takes 17h 00m, covering a distance of 5612 miles.
Which airlines provide the cheapest flights from Chicago O'Hare International to Buenos Aires?
In the past 3 days, the cheapest round-trip tickets were found on Aeromexico ($860), Multiple Airlines ($1188) and LATAM Airlines ($1206).
Do I need a passport to fly between Chicago O'Hare International and Buenos Aires?
Yes.
What’s the cheapest day of the week to fly Chicago O'Hare International to Buenos Aires?
For Chicago O'Hare International to Buenos Aires, Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Buenos Aires back to Chicago O'Hare International, the best deals are generally found on Thursday, with Wednesday being the most expensive.

Book cheap flights from Chicago O'Hare International to Buenos Aires (round-trip)

Airports
Origin
Chicago
$860
only
$860
Destination
Buenos Aires
$1253
only
$1253
$860
only
$860
Wed, Feb 7
ORD
EZE
17h 00m
Mon, Feb 26
EZE
ORD
16h 05m
Trip: 20 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4650 reviews
Overall
7.4
Boarding
7.3
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.

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.

YVR
MEX
Okay 4.0

The flight was delayed over 2 and a half hours, missed our connecting flight in Mexico City. The in flight entertainment stopped working half way through the flight, didn’t work again. Bad customer service, didn’t even apologize

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.

Sun, Jun 10
ORD
EZE
24h 50m
Sat, Jun 16
EZE
ORD
20h 00m
$1188
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Mar 18
ORD
EZE
32h 00m
Wed, Mar 28
EZE
ORD
22h 23m
$1206
Trip: 11 days
7.6GoodShow reviews
Overall 7.6 Good
Based on 2659 reviews
Overall
7.7
Boarding
7.6
Comfort
7.5
Crew
8.1
Entertainment
7.5
Food
7.2
SCL
GRU
Okay 5.3

Unless you have a super category in this airline, don’t even try to apply to an upgrade. Employees have more preference than you

SCL
MIA
Excellent 10.0

Excellent service and the food is awesome :-) It has one of the youngest fleets in the industry!!! the LATAM Dreamliner feels so smooth! You should really try that aircraft, it has a special pressurization that you won't feel the

MIA
SCL
Good 6.3

the flight crew was so nice, and so collaborative. Im vegan and the ooption they had was vegetarian, but they figure out and got salad and fruit for me.

my luggage arrived broken. they break the zip in order to open the luggage, (for general checking Iguess) but the zip should never have been broken

GRU
LIM
Excellent 9.3

I would fly Latam again, good service and I saved a lot of money

Would like a lil bit more legroom

COR
SCL
Okay 4.6

better food and service, more space between seats

poor space for legs, food was really poor. no entertainment..

Thu, Jan 11
ORD
EZE
26h 20m
Sat, Feb 10
EZE
ORD
18h 17m
$1260
Trip: 31 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 20176 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.9
Food
6.5
LGA
YYZ
Excellent 8.0

Quiet

Nothing

YWG
YYZ
Excellent 9.3

Size of seats and entertainment

Late leaving, slow baggage claim

PHX
YYC
Excellent 8.0

Airport security was great and the airport pane was clean with a great crew!

Didn’t depart on schedule and then had to wait in Calgary to depart as the gate wasn’t available

YVR
YYZ
Good 7.3

On-line check-in was available.

It was very confusing as to where to get bag tags after encountering issue with printing from the machines. No reps were kind enough to spend 3 mins to look at my situation/case and provide immediate guidance. As a result, I missed my flight and needed to pay extra to get on one.

YEG
YVR
Good 6.0

Flight was delayed due to ATC

Tue, Mar 6
ORD
EZE
27h 55m
Wed, Mar 14
EZE
ORD
16h 45m
$1002
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4650 reviews
Overall
7.4
Boarding
7.3
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.

SFO
GDL
Mediocre 2.0

Our flight got changed and we received no notification. Instead of 1 stop we ended up with two. Two flights were delayed therefore we missed the third one. Just a terrible experience. The staff was very rude, had no people skills, and didn’t know how to explain the situation.

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.

YVR
MEX
Okay 4.0

The flight was delayed over 2 and a half hours, missed our connecting flight in Mexico City. The in flight entertainment stopped working half way through the flight, didn’t work again. Bad customer service, didn’t even apologize

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.

Sun, Mar 25
ORD
EZE
36h 36m
Sat, Mar 31
EZE
ORD
44h 10m
$1197
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Feb 18
ORD
EZE
28h 15m
Sat, Feb 24
EZE
ORD
36h 45m
$1117
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4650 reviews
Overall
7.4
Boarding
7.3
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
MEX
MZT
Mediocre 2.0

Aeromexico truly is the worst airline on the planet. I travel all the time and I am the type of person who never complains. Six months ago when I came to Mexico and my daughter’s fiancé died of a heart attack they gave me the worst service of my life. And now again today they’re completely 100% at fault for me missing my flight. I was seven hours at the airport waiting for the flight and they didn’t post it on the boards. They never put a gate up. Other people also missed the flight. They offered no compensation, they wouldn’t pay for a hotel or a shuttle, absolutely reprehensible. Do not do business with this company

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

SJO
MEX
Excellent 8.6

Great seats with individual screens for free movies

No vegetarian option Long back up at Mexico City customs

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.

Tue, Jan 23
ORD
EZE
22h 40m
Fri, Feb 2
EZE
ORD
22h 17m
$1260
Trip: 11 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 20176 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.9
Food
6.5
HNL
YVR
Good 7.6

Seats in business.

The food.

YWG
YYZ
Excellent 9.3

Size of seats and entertainment

Late leaving, slow baggage claim

TPE
YVR
Excellent 8.6

On-line check-in was available.The process in Taipei to board the flight was good.

YVR
NRT
Excellent 10.0

Love it

Nothing to report.

YVR
YYZ
Good 7.3

On-line check-in was available.

It was very confusing as to where to get bag tags after encountering issue with printing from the machines. No reps were kind enough to spend 3 mins to look at my situation/case and provide immediate guidance. As a result, I missed my flight and needed to pay extra to get on one.

Thu, Mar 29
ORD
EZE
19h 45m
Sat, Apr 7
EZE
ORD
18h 50m
$1282
Trip: 10 days
7.6GoodShow reviews
Overall 7.6 Good
Based on 2659 reviews
Overall
7.7
Boarding
7.6
Comfort
7.5
Crew
8.1
Entertainment
7.5
Food
7.2
MVD
SCL
Excellent 9.3

Lancing was excellent. Good leg room, good leather sits

I thought service was good.

MIA
SCL
Good 6.3

the flight crew was so nice, and so collaborative. Im vegan and the ooption they had was vegetarian, but they figure out and got salad and fruit for me.

my luggage arrived broken. they break the zip in order to open the luggage, (for general checking Iguess) but the zip should never have been broken

JFK
SCL
Excellent 8.6

Staff and service was great

SCL
JFK
Excellent 10.0

I loved the whole trip

Everything was great! No complaints!!

SCL
JFK
Excellent 10.0

Great entertainment choices, the best airline food I've ever had, attentive service, lots of amenities, new and modern plane

Fri, May 4
ORD
EZE
25h 15m
Thu, May 17
EZE
ORD
20h 10m
$1209
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Apr 19
ORD
EZE
40h 05m
Fri, Apr 27
EZE
ORD
29h 20m
$1222
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Mar 29
ORD
AEP
19h 05m
Sat, Apr 7
AEP
ORD
19h 02m
$1253
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Mar 8
ORD
AEP
25h 03m
Wed, Mar 14
AEP
ORD
28h 41m
$1266
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Sat, May 19
ORD
AEP
20h 30m
Mon, May 28
AEP
ORD
22h 14m
$1280
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Dec 23
ORD
EZE
41h 48m
Sat, Dec 30
EZE
ORD
37h 18m
$1845
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 4650 reviews
Overall
7.4
Boarding
7.3
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
PDX
MEX
Good 7.6

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

Chaotic boarding.

MEX
JFK
Excellent 9.6

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

SFO
GDL
Mediocre 2.0

Our flight got changed and we received no notification. Instead of 1 stop we ended up with two. Two flights were delayed therefore we missed the third one. Just a terrible experience. The staff was very rude, had no people skills, and didn’t know how to explain the situation.

MEX
MZT
Mediocre 2.0

Aeromexico truly is the worst airline on the planet. I travel all the time and I am the type of person who never complains. Six months ago when I came to Mexico and my daughter’s fiancé died of a heart attack they gave me the worst service of my life. And now again today they’re completely 100% at fault for me missing my flight. I was seven hours at the airport waiting for the flight and they didn’t post it on the boards. They never put a gate up. Other people also missed the flight. They offered no compensation, they wouldn’t pay for a hotel or a shuttle, absolutely reprehensible. Do not do business with this company

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.

Mon, Feb 19
ORD
AEP
22h 15m
Sat, Feb 24
AEP
ORD
18h 12m
$1294
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Apr 10
ORD
AEP
35h 33m
Mon, May 7
AEP
ORD
31h 57m
$1346
Trip: 28 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Jan 16
ORD
AEP
20h 12m
Mon, Jan 22
AEP
ORD
32h 26m
$1475
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Mar 18
ORD
AEP
18h 30m
Wed, Mar 28
AEP
ORD
25h 23m
$1501
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jun 6
ORD
AEP
48h 35m
Wed, Jun 13
AEP
ORD
40h 30m
$1551
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
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