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Cheap flights from Chicago O'Hare Intl Airport to Buenos Aires from $311

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 9/28. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
12:12 pm - 4:10 am
ORD
-
EZE
13h 58m
1 stop
Arajet Logo
9:15 pm - 11:12 am
EZE
-
ORD
15h 57m
1 stop
$801Arajet
Sat, Aug 15 - Fri, Aug 28
Arajet Logo
5:45 am - 6:45 am
ORD
-
EZE
22h 00m
1 stop
Arajet Logo
9:15 pm - 10:40 pm
EZE
-
ORD
28h 25m
1 stop
$807Arajet
Fri, Nov 6 - Wed, Nov 11
Arajet Logo
4:30 am - 8:15 pm
ORD
-
EZE
13h 45m
1 stop
Arajet Logo
8:40 am - 10:10 pm
EZE
-
ORD
15h 30m
1 stop
$812Arajet
Mon, Jul 13 - Sun, Jul 26
Arajet Logo
12:12 pm - 4:10 am
ORD
-
EZE
13h 58m
1 stop
Arajet Logo
9:15 pm - 11:12 am
EZE
-
ORD
15h 57m
1 stop
$821Arajet
Sat, Aug 15 - Fri, Aug 28
Arajet Logo
4:30 am - 7:50 am
ORD
-
EZE
25h 20m
1 stop
Arajet Logo
7:10 am - 10:40 pm
EZE
-
ORD
18h 30m
1 stop
$825Arajet
Mon, Oct 26 - Thu, Nov 19
LATAM Airlines Logo
1:15 pm - 9:40 am
ORD
-
EZE
17h 25m
2 stops
LATAM Airlines Logo
3:35 pm - 10:07 am
EZE
-
ORD
21h 32m
2 stops
$829LATAM Airlines
Sat, Nov 21 - Wed, Nov 25
Multiple Airlines Logo
12:12 pm - 4:10 am
ORD
-
EZE
13h 58m
1 stop
Multiple Airlines Logo
5:30 am - 9:20 pm
EZE
-
ORD
41h 50m
2 stops
$832Multiple Airlines
Sat, Aug 15 - Thu, Aug 27
Arajet Logo
5:30 am - 12:05 am
ORD
-
EZE
16h 35m
1 stop
Arajet Logo
9:45 am - 11:40 pm
EZE
-
ORD
15h 55m
1 stop
$838Arajet
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
5:30 am - 12:05 am
ORD
-
EZE
16h 35m
1 stop
Multiple Airlines Logo
4:50 pm - 12:32 pm
EZE
-
ORD
21h 42m
2 stops
$839Multiple Airlines
Mon, Sep 21 - Tue, Oct 13
Arajet Logo
6:45 am - 6:45 am
ORD
-
EZE
22h 00m
1 stop
Arajet Logo
2:45 am - 10:10 pm
EZE
-
ORD
21h 25m
1 stop
$846Arajet
Fri, Oct 9 - Sat, Oct 17

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

Our best Arajet deals on Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport flight tickets
Arajet
Aug 15
ORD12:12 pmChicago O'Hare Intl
13h 58m
1 stop
EZE4:10 amBuenos Aires Ministro Pistarini
Aug 28
EZE9:15 pmBuenos Aires Ministro Pistarini
15h 57m
1 stop
ORD11:12 amChicago O'Hare Intl
$801
Arajet
Jul 13
ORD4:30 amChicago O'Hare Intl
13h 45m
1 stop
EZE8:15 pmBuenos Aires Ministro Pistarini
Jul 26
EZE8:40 amBuenos Aires Ministro Pistarini
15h 30m
1 stop
ORD10:10 pmChicago O'Hare Intl
$812
Arajet
Jul 13
ORD4:30 amChicago O'Hare Intl
13h 45m
1 stop
EZE8:15 pmBuenos Aires Ministro Pistarini
Jul 26
EZE8:40 amBuenos Aires Ministro Pistarini
15h 30m
1 stop
ORD10:10 pmChicago O'Hare Intl
$816

Avianca flights from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport

Our best Avianca deals on Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport flight tickets
Avianca
Jul 1
ORD11:20 pmChicago O'Hare Intl
14h 20m
1 stop
EZE3:40 pmBuenos Aires Ministro Pistarini
Jul 28
EZE4:50 pmBuenos Aires Ministro Pistarini
30h 30m
1 stop
ORD9:20 pmChicago O'Hare Intl
$1,064
Avianca
Jun 26
ORD11:20 pmChicago O'Hare Intl
14h 20m
1 stop
EZE3:40 pmBuenos Aires Ministro Pistarini
Jun 28
EZE7:10 amBuenos Aires Ministro Pistarini
16h 10m
1 stop
ORD9:20 pmChicago O'Hare Intl
$1,089

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport 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 June 23, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport 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

Sat 8/15

12:12 pm-4:10 am

1 stop13h 58m

Buenos Aires Ministro Pistarini

Fri 8/28

9:15 pm-11:12 am

1 stop15h 57m

$801

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Fri 11/6

5:45 am-6:45 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Wed 11/11

9:15 pm-10:40 pm

1 stop28h 25m

$807
Quickest round-trip

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 7/13

4:30 am-8:15 pm

1 stop13h 45m

Buenos Aires Ministro Pistarini

Sun 7/26

8:40 am-10:10 pm

1 stop15h 30m

$812

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 8/15

12:12 pm-4:10 am

1 stop13h 58m

Buenos Aires Ministro Pistarini

Fri 8/28

9:15 pm-11:12 am

1 stop15h 57m

$821

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 10/26

4:30 am-7:50 am

1 stop25h 20m

Buenos Aires Ministro Pistarini

Thu 11/19

7:10 am-10:40 pm

1 stop18h 30m

$825

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 11/21

1:15 pm-9:40 am

2 stops17h 25m

Buenos Aires Ministro Pistarini

Wed 11/25

3:35 pm-10:07 am

2 stops21h 32m

$829

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 8/15

12:12 pm-4:10 am

1 stop13h 58m

Buenos Aires Ministro Pistarini

Thu 8/27

5:30 am-9:20 pm

2 stops41h 50m

$832

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 9/7

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Thu 9/17

9:45 am-11:40 pm

1 stop15h 55m

$838

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

Tue 10/13

4:50 pm-12:32 pm

2 stops21h 42m

$839

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Fri 10/9

6:45 am-6:45 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Sat 10/17

2:45 am-10:10 pm

1 stop21h 25m

$846

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport

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 Ministro Pistarini Airport?

What is the cheapest month to fly to Buenos Aires Ministro Pistarini Airport?

If you aren’t able to travel during the month of May, then book flights to Buenos Aires Ministro Pistarini Airport from Chicago O'Hare Intl Airport during November instead. Flights to Buenos Aires Ministro Pistarini Airport in November, while not as cheap as those in May, still average around $918.

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

You are more likely to see cheaper flights to Buenos Aires Ministro Pistarini Airport 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 Ministro Pistarini Airport for around $1,128 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires Ministro Pistarini Airport from Chicago O'Hare Intl Airport for as low as $747 on momondo.

How have Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport flight prices changed over time?

As of June 2026, prices for Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport flights are approximately 54% cheaper when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport 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 Ministro Pistarini Airport (ORD to EZE) 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 Ministro Pistarini Airport

Fastest flight time

13h 45m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport takes 13h 45m
There are no direct flights from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport. There are no popular flight routes from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport.
Search flight deals

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

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

    Buenos Aires Ministro Pistarini is 5618.9 mi away from Chicago O'Hare Intl. Typically, this will take 13h 45m by plane in normal conditions.

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

    Prices for flights from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport are refreshed on a daily basis.

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

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

    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 Ministro Pistarini Airport.

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

    The required travel and health documents for your Buenos Aires Ministro Pistarini Airport 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 Ministro Pistarini Airport. 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 Ministro Pistarini Airport?

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

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Buenos Aires Ministro Pistarini Airport with momondo
Airline
Rating
Free Cancellation
Price
ArajetPriceFrom $360Free CancellationRating
6.5
49 reviews
Search Arajet flights
Copa AirlinesPriceFrom $569Free CancellationRating
7.6
1,568 reviews
Search Copa Airlines flights
LATAM AirlinesPriceFrom $727Free CancellationRating
7.4
1,942 reviews
Search LATAM Airlines flights
AviancaPriceFrom $795Free CancellationRating
6.5
2,533 reviews
Search Avianca flights
DeltaPriceFrom $901Free CancellationRating
7.8
8,427 reviews
Search Delta flights
United AirlinesPriceFrom $951Free CancellationRating
7.4
9,873 reviews
Search United Airlines flights
American AirlinesPriceFrom $972Free CancellationRating
7.1
11,744 reviews
Search American Airlines flights

Why use momondo?

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

Finding the right flight to Buenos Aires from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Buenos Aires quick and easy, saving you time and money.

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

Yes. All flights to Buenos Aires from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Chicago to Buenos Aires flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Chicago to Buenos Aires now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Buenos Aires and let you know when they change.

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