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Cheap flights from Chicago O'Hare Intl Airport to Buenos Aires from $262

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 4/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Multiple Airlines Logo
11:20 pm - 11:36 pm
ORD
-
EZE
22h 16m
2 stops
Multiple Airlines Logo
2:30 am - 11:47 pm
EZE
-
ORD
23h 17m
3 stops
$905Multiple Airlines
Wed, May 6 - Tue, May 12
Multiple Airlines Logo
1:15 pm - 9:20 am
ORD
-
EZE
18h 05m
1 stop
Multiple Airlines Logo
11:00 am - 11:40 pm
EZE
-
ORD
14h 40m
1 stop
$906Multiple Airlines
Sun, Jun 7 - Thu, Jun 18
Multiple Airlines Logo
11:20 pm - 9:20 pm
ORD
-
AEP
20h 00m
2 stops
Multiple Airlines Logo
11:55 am - 9:20 pm
AEP
-
ORD
35h 25m
2 stops
$906Multiple Airlines
Mon, Mar 30 - Mon, Apr 6
Air Canada Logo
3:45 pm - 2:30 pm
ORD
-
EZE
20h 45m
2 stops
Air Canada Logo
4:35 pm - 7:25 pm
EZE
-
ORD
28h 50m
2 stops
$907Air Canada
Tue, Apr 28 - Wed, May 6
Multiple Airlines Logo
10:55 am - 5:40 am
ORD
-
EZE
16h 45m
2 stops
Multiple Airlines Logo
2:25 am - 9:20 pm
EZE
-
ORD
20h 55m
2 stops
$908Multiple Airlines
Tue, Apr 14 - Mon, Apr 27
Air Canada Logo
8:40 am - 2:30 pm
ORD
-
EZE
27h 50m
2 stops
Air Canada Logo
4:35 pm - 8:00 am
EZE
-
ORD
41h 25m
3 stops
$910Air Canada
Tue, Apr 7 - Sat, May 9
Air Canada Logo
9:20 pm - 2:30 pm
ORD
-
EZE
39h 10m
2 stops
Air Canada Logo
4:35 pm - 2:55 pm
EZE
-
ORD
24h 20m
2 stops
$912Air Canada
Mon, Apr 27 - Wed, May 6
Avianca Logo
11:20 pm - 5:40 am
ORD
-
AEP
28h 20m
1 stop
Avianca Logo
7:00 am - 9:20 pm
AEP
-
ORD
16h 20m
1 stop
$915Avianca
Sun, May 17 - Wed, May 27
Avianca Logo
11:20 pm - 5:40 am
ORD
-
AEP
28h 20m
1 stop
Avianca Logo
7:00 am - 9:20 pm
AEP
-
ORD
16h 20m
1 stop
$917Avianca
Sun, Apr 19 - Mon, Apr 27
Avianca Logo
11:20 pm - 5:40 am
ORD
-
AEP
28h 20m
1 stop
Avianca Logo
7:00 am - 9:20 pm
AEP
-
ORD
16h 20m
1 stop
$922Avianca
Wed, Apr 29 - Thu, May 7

Copa Airlines flights from Chicago O'Hare Intl Airport to Buenos Aires

Our best Copa Airlines deals on Chicago O'Hare Intl Airport to Buenos Aires flight tickets
Copa Airlines
Mar 5
ORD2:22 pmChicago O'Hare Intl
31h 40m
1 stop
EZE1:02 amBuenos Aires Ministro Pistarini
Mar 19
EZE9:16 amBuenos Aires Ministro Pistarini
17h 48m
1 stop
ORD1:04 amChicago O'Hare Intl
$918
Copa Airlines
Apr 1
ORD8:06 amChicago O'Hare Intl
14h 44m
1 stop
EZE12:50 amBuenos Aires Ministro Pistarini
Apr 5
EZE2:57 pmBuenos Aires Ministro Pistarini
36h 16m
1 stop
ORD1:13 amChicago O'Hare Intl
$921
Copa Airlines
Mar 11
ORD3:22 pmChicago O'Hare Intl
29h 36m
1 stop
EZE10:58 pmBuenos Aires Ministro Pistarini
Mar 18
EZE2:43 pmBuenos Aires Ministro Pistarini
24h 48m
1 stop
ORD1:31 pmChicago O'Hare Intl
$922

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

Our best Avianca deals on Chicago O'Hare Intl Airport to Buenos Aires flight tickets
Avianca
May 17
ORD11:20 pmChicago O'Hare Intl
28h 20m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
May 27
AEP7:00 amBuenos Aires Jorge Newbery
16h 20m
1 stop
ORD9:20 pmChicago O'Hare Intl
$915
Avianca
Apr 19
ORD11:20 pmChicago O'Hare Intl
28h 20m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Apr 27
AEP7:00 amBuenos Aires Jorge Newbery
16h 20m
1 stop
ORD9:20 pmChicago O'Hare Intl
$917
Avianca
Apr 29
ORD11:20 pmChicago O'Hare Intl
23h 05m
1 stop
EZE12:25 amBuenos Aires Ministro Pistarini
May 3
EZE7:10 amBuenos Aires Ministro Pistarini
16h 10m
1 stop
ORD9:20 pmChicago O'Hare Intl
$920

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 March 1, 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

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 5/6

11:20 pm-11:36 pm

2 stops22h 16m

Buenos Aires Ministro Pistarini

Tue 5/12

2:30 am-11:47 pm

3 stops23h 17m

$905

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sun 6/7

1:15 pm-9:20 am

1 stop18h 05m

Buenos Aires Ministro Pistarini

Thu 6/18

11:00 am-11:40 pm

1 stop14h 40m

$906

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Mon 3/30

11:20 pm-9:20 pm

2 stops20h 00m

Buenos Aires Jorge Newbery

Mon 4/6

11:55 am-9:20 pm

2 stops35h 25m

$906

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Tue 4/28

3:45 pm-2:30 pm

2 stops20h 45m

Buenos Aires Ministro Pistarini

Wed 5/6

4:35 pm-7:25 pm

2 stops28h 50m

$907

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Tue 4/14

10:55 am-5:40 am

2 stops16h 45m

Buenos Aires Ministro Pistarini

Mon 4/27

2:25 am-9:20 pm

2 stops20h 55m

$908

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Tue 4/7

8:40 am-2:30 pm

2 stops27h 50m

Buenos Aires Ministro Pistarini

Sat 5/9

4:35 pm-8:00 am

3 stops41h 25m

$910

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 4/27

9:20 pm-2:30 pm

2 stops39h 10m

Buenos Aires Ministro Pistarini

Wed 5/6

4:35 pm-2:55 pm

2 stops24h 20m

$912

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sun 5/17

11:20 pm-5:40 am

1 stop28h 20m

Buenos Aires Jorge Newbery

Wed 5/27

7:00 am-9:20 pm

1 stop16h 20m

$915

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sun 4/19

11:20 pm-5:40 am

1 stop28h 20m

Buenos Aires Jorge Newbery

Mon 4/27

7:00 am-9:20 pm

1 stop16h 20m

$917

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Wed 4/29

11:20 pm-5:40 am

1 stop28h 20m

Buenos Aires Jorge Newbery

Thu 5/7

7:00 am-9:20 pm

1 stop16h 20m

$922

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 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 $952, 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 November instead. Flights to Buenos Aires in November, while not as cheap as those in March, still average around $1,015.

How far in advance should I book a flight 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 $1,107 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 $760 on momondo.

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

You could potentially save up to 32% 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

14h 29m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Buenos Aires takes 14h 29m
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

  • 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 14h 29m 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
6.4
46 reviews
Search Arajet flights
Copa AirlinesPriceFrom $569Free CancellationRating
7.5
1,557 reviews
Search Copa Airlines flights
AviancaPriceFrom $750Free CancellationRating
6.5
2,494 reviews
Search Avianca flights
DeltaPriceFrom $951Free CancellationRating
7.9
8,244 reviews
Search Delta flights
United AirlinesPriceFrom $951Free CancellationRating
7.4
9,366 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,015Free CancellationRating
7.1
11,372 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.

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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