Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Chicago O'Hare Intl Airport to Buenos Aires from $325

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Buenos Aires departing on 8/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Chicago O'Hare Intl Airport to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
Arajet Logo
5:30 am - 12:05 am
ORD
-
EZE
16h 35m
1 stop
Arajet Logo
8:40 am - 10:10 pm
EZE
-
ORD
15h 30m
1 stop
$784Arajet
Mon, Oct 19 - Sun, Oct 25
LATAM Airlines Logo
7:55 pm - 5:00 pm
ORD
-
AEP
19h 05m
2 stops
LATAM Airlines Logo
5:05 pm - 10:07 am
AEP
-
ORD
20h 02m
2 stops
$784LATAM Airlines
Tue, Oct 27 - Mon, Nov 2
Arajet Logo
5:30 am - 12:05 am
ORD
-
EZE
16h 35m
1 stop
Arajet Logo
11:00 am - 11:40 pm
EZE
-
ORD
14h 40m
1 stop
$792Arajet
Mon, Oct 5 - Thu, Oct 8
Arajet Logo
5:30 am - 12:05 am
ORD
-
EZE
16h 35m
1 stop
Arajet Logo
11:00 am - 11:40 pm
EZE
-
ORD
14h 40m
1 stop
$793Arajet
Mon, Sep 21 - Thu, Oct 15
Arajet Logo
6:45 am - 7:30 am
ORD
-
EZE
22h 45m
1 stop
Arajet Logo
8:40 am - 10:10 pm
EZE
-
ORD
15h 30m
1 stop
$796Arajet
Fri, Sep 25 - Sun, Oct 11
Arajet Logo
12:12 pm - 4:10 am
ORD
-
EZE
13h 58m
1 stop
Arajet Logo
8:40 am - 10:10 pm
EZE
-
ORD
15h 30m
1 stop
$797Arajet
Sat, Aug 22 - Sun, Aug 30
Arajet Logo
12:12 pm - 4:10 am
ORD
-
EZE
13h 58m
1 stop
Arajet Logo
7:10 am - 11:40 pm
EZE
-
ORD
18h 30m
1 stop
$798Arajet
Sat, Oct 24 - Thu, Oct 29
LATAM Airlines Logo
3:35 pm - 5:00 pm
ORD
-
AEP
23h 25m
2 stops
LATAM Airlines Logo
5:05 pm - 2:13 pm
AEP
-
ORD
23h 08m
2 stops
$825LATAM Airlines
Sat, Oct 24 - Thu, Oct 29
GOL Logo
5:00 am - 1:00 pm
ORD
-
AEP
30h 00m
2 stops
GOL Logo
3:40 am - 10:31 pm
AEP
-
ORD
20h 51m
2 stops
$954GOL
Sun, Sep 27 - Sun, Oct 4
GOL Logo
5:00 am - 1:00 pm
ORD
-
AEP
30h 00m
2 stops
GOL Logo
3:40 am - 9:22 pm
AEP
-
ORD
19h 42m
2 stops
$955GOL
Sun, Sep 27 - Sun, Oct 4

Arajet flights from Chicago O'Hare Intl Airport to Buenos Aires

Our best Arajet deals on Chicago O'Hare Intl Airport to Buenos Aires flight tickets
Arajet
Oct 19
ORD5:30 amChicago O'Hare Intl
16h 35m
1 stop
EZE12:05 amBuenos Aires Ministro Pistarini
Oct 25
EZE8:40 amBuenos Aires Ministro Pistarini
15h 30m
1 stop
ORD10:10 pmChicago O'Hare Intl
$784
Arajet
Oct 5
ORD5:30 amChicago O'Hare Intl
16h 35m
1 stop
EZE12:05 amBuenos Aires Ministro Pistarini
Oct 8
EZE11:00 amBuenos Aires Ministro Pistarini
14h 40m
1 stop
ORD11:40 pmChicago O'Hare Intl
$792
Arajet
Sep 21
ORD5:30 amChicago O'Hare Intl
16h 35m
1 stop
EZE12:05 amBuenos Aires Ministro Pistarini
Oct 15
EZE11:00 amBuenos Aires Ministro Pistarini
14h 40m
1 stop
ORD11:40 pmChicago O'Hare Intl
$793

Air Canada flights from Chicago O'Hare Intl Airport to Buenos Aires

Our best Air Canada deals on Chicago O'Hare Intl Airport to Buenos Aires flight tickets
Air Canada
Jun 2
ORD12:55 pmChicago O'Hare Intl
23h 35m
2 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
Jun 8
EZE4:35 pmBuenos Aires Ministro Pistarini
19h 43m
2 stops
ORD10:18 amChicago O'Hare Intl
$1,004
Air Canada
Jun 6
ORD8:20 pmChicago O'Hare Intl
40h 10m
2 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
Jun 15
EZE4:35 pmBuenos Aires Ministro Pistarini
41h 15m
3 stops
ORD7:50 amChicago O'Hare Intl
$1,073
Air Canada
Jun 13
ORD8:20 pmChicago O'Hare Intl
40h 10m
2 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
Jun 18
EZE4:35 pmBuenos Aires Ministro Pistarini
43h 41m
3 stops
ORD10:16 amChicago O'Hare Intl
$1,075

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 31, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 10/19

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Sun 10/25

8:40 am-10:10 pm

1 stop15h 30m

$784

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Tue 10/27

7:55 pm-5:00 pm

2 stops19h 05m

Buenos Aires Jorge Newbery

Mon 11/2

5:05 pm-10:07 am

2 stops20h 02m

$784

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 10/5

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Thu 10/8

11:00 am-11:40 pm

1 stop14h 40m

$792

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 9/21

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Thu 10/15

11:00 am-11:40 pm

1 stop14h 40m

$793

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Fri 9/25

6:45 am-7:30 am

1 stop22h 45m

Buenos Aires Ministro Pistarini

Sun 10/11

8:40 am-10:10 pm

1 stop15h 30m

$796
Quickest round-trip

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 8/22

12:12 pm-4:10 am

1 stop13h 58m

Buenos Aires Ministro Pistarini

Sun 8/30

8:40 am-10:10 pm

1 stop15h 30m

$797

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 10/24

12:12 pm-4:10 am

1 stop13h 58m

Buenos Aires Ministro Pistarini

Thu 10/29

7:10 am-11:40 pm

1 stop18h 30m

$798

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sat 10/24

3:35 pm-5:00 pm

2 stops23h 25m

Buenos Aires Jorge Newbery

Thu 10/29

5:05 pm-2:13 pm

2 stops23h 08m

$825

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sun 9/27

5:00 am-1:00 pm

2 stops30h 00m

Buenos Aires Jorge Newbery

Sun 10/4

3:40 am-10:31 pm

2 stops20h 51m

$954

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sun 9/27

5:00 am-1:00 pm

2 stops30h 00m

Buenos Aires Jorge Newbery

Sun 10/4

3:40 am-9:22 pm

2 stops19h 42m

$955

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Buenos Aires from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Buenos Aires

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Chicago O'Hare Intl Airport and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Chicago O'Hare Intl Airport is in March. Flight prices, which tend to average around $134, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Buenos Aires from Chicago O'Hare Intl Airport during December instead. Flights to Buenos Aires in December, while not as cheap as those in March, still average around $307.

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

You are more likely to see cheaper flights to Buenos Aires from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,117 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Chicago O'Hare Intl Airport for as low as $747 on momondo.

Can stopping save me money on Chicago O'Hare Intl Airport to Buenos Aires flights?

You could potentially save up to 57% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Buenos Aires flight.

When to book flights from Chicago O'Hare Intl Airport to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to Buenos Aires (ORD to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Buenos Aires

Fastest flight time

13h 39m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Buenos Aires takes 13h 39m
There are no direct flights from Chicago O'Hare Intl Airport to Buenos Aires. There are no popular flight routes from Chicago O'Hare Intl Airport to Buenos Aires.
Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Buenos Aires

  • How far is Chicago O'Hare Intl to Buenos Aires by plane?

    Buenos Aires is 5608.8 mi away from Chicago O'Hare Intl. Typically, this will take 13h 39m by plane in normal conditions.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Buenos Aires?

    Prices for flights from Chicago O'Hare Intl Airport to Buenos Aires are updated daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Buenos Aires?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Buenos Aires?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport to Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The required travel and health documents for your Buenos Aires trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Buenos Aires. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Chicago O'Hare Intl Airport to Buenos Aires?

Best airlines flying from Chicago O'Hare Intl Airport to Buenos Aires

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
ArajetPriceFrom $360Free CancellationRating
6.5
48 reviews
Search Arajet flights
Copa AirlinesPriceFrom $569Free CancellationRating
7.5
1,574 reviews
Search Copa Airlines flights
LATAM AirlinesPriceFrom $727Free CancellationRating
7.4
1,919 reviews
Search LATAM Airlines flights
AviancaPriceFrom $795Free CancellationRating
6.5
2,527 reviews
Search Avianca flights
DeltaPriceFrom $901Free CancellationRating
7.9
8,412 reviews
Search Delta flights
United AirlinesPriceFrom $951Free CancellationRating
7.4
9,769 reviews
Search United Airlines flights
American AirlinesPriceFrom $972Free CancellationRating
7.1
11,644 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Buenos Aires?

It is quick and easy to find Chicago to Buenos Aires flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Buenos Aires that suits you.

Can I find flights from Chicago to Buenos Aires with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Chicago to Buenos Aires flights to just show those with flexible booking policies.

How can momondo help me find flights from Chicago to Buenos Aires?

Once all potential Chicago to Buenos Aires flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Chicago to Buenos Aires right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to Buenos Aires flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Buenos Aires trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 6/30
Tue 7/7
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 17.0 mi from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport