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Cheap flights from Chicago to Buenos Aires from $256

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 to Buenos Aires departing on 3/1. 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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0 bags

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Find the cheapest flights from Chicago to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:05 am - 4:20 am
ORD
-
AEP
21h 15m
3 stops
Multiple Airlines Logo
9:35 am - 6:35 pm
AEP
-
ORD
35h 00m
3 stops
$912Multiple Airlines
Thu, Mar 12 - Thu, Mar 19
Multiple Airlines Logo
6:16 pm - 5:00 am
ORD
-
EZE
32h 44m
2 stops
Multiple Airlines Logo
9:15 pm - 11:40 pm
EZE
-
ORD
28h 25m
1 stop
$915Multiple Airlines
Sat, Mar 28 - Mon, Apr 6
Multiple Airlines Logo
10:55 am - 8:40 pm
ORD
-
AEP
31h 45m
3 stops
Multiple Airlines Logo
3:45 pm - 11:47 pm
AEP
-
ORD
34h 02m
3 stops
$915Multiple Airlines
Fri, Mar 27 - Tue, Apr 7
Multiple Airlines Logo
5:15 am - 5:05 am
ORD
-
EZE
21h 50m
3 stops
Multiple Airlines Logo
9:15 pm - 10:10 pm
EZE
-
ORD
26h 55m
1 stop
$916Multiple Airlines
Sat, May 9 - Sat, May 23
United Airlines Logo
2:00 pm - 7:20 am
ORD
-
EZE
14h 20m
1 stop
United Airlines Logo
10:05 pm - 10:06 am
EZE
-
ORD
15h 01m
1 stop
$917United Airlines
Wed, Feb 25 - Wed, Mar 4
Delta Logo
9:34 am - 7:20 am
MDW
-
EZE
18h 46m
2 stops
Delta Logo
8:55 pm - 12:46 pm
EZE
-
MDW
18h 51m
2 stops
$921Delta
Wed, Feb 25 - Wed, Mar 4
Avianca Logo
11:20 pm - 3:50 pm
ORD
-
EZE
14h 30m
1 stop
Avianca Logo
1:40 am - 9:20 pm
EZE
-
ORD
21h 40m
1 stop
$922Avianca
Wed, Mar 11 - Mon, Mar 16
Copa Airlines Logo
3:22 pm - 7:55 am
ORD
-
EZE
14h 33m
1 stop
Copa Airlines Logo
5:16 am - 1:04 am
EZE
-
ORD
21h 48m
1 stop
$925Copa Airlines
Thu, Mar 12 - Tue, Mar 24
United Airlines Logo
9:15 pm - 7:20 am
ORD
-
EZE
31h 05m
1 stop
United Airlines Logo
10:05 pm - 10:07 am
EZE
-
ORD
15h 02m
1 stop
$926United Airlines
Sun, Feb 22 - Mon, Mar 2
Delta Logo
1:29 pm - 9:00 am
MDW
-
EZE
16h 31m
2 stops
Delta Logo
8:55 pm - 12:29 pm
EZE
-
MDW
17h 34m
2 stops
$941Delta
Mon, Mar 2 - Mon, Mar 23

Copa Airlines flights from Chicago to Buenos Aires

Our best Copa Airlines deals on Chicago to Buenos Aires flight tickets
Copa Airlines
Mar 12
ORD3:22 pmChicago O'Hare Intl
14h 33m
1 stop
EZE7:55 amBuenos Aires Ministro Pistarini
Mar 24
EZE5:16 amBuenos Aires Ministro Pistarini
21h 48m
1 stop
ORD1:04 amChicago O'Hare Intl
$925
Copa Airlines
Mar 18
ORD3:22 pmChicago O'Hare Intl
29h 36m
1 stop
EZE10:58 pmBuenos Aires Ministro Pistarini
Mar 28
EZE2:43 pmBuenos Aires Ministro Pistarini
36h 26m
1 stop
ORD1:09 amChicago O'Hare Intl
$939
Copa Airlines
Feb 3
ORD7:34 amChicago O'Hare Intl
14h 30m
1 stop
EZE1:04 amBuenos Aires Ministro Pistarini
Mar 20
EZE5:16 amBuenos Aires Ministro Pistarini
21h 48m
1 stop
ORD1:04 amChicago O'Hare Intl
$1,115

United Airlines flights from Chicago to Buenos Aires

Our best United Airlines deals on Chicago to Buenos Aires flight tickets
United Airlines
Feb 25
ORD2:00 pmChicago O'Hare Intl
14h 20m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Mar 4
EZE10:05 pmBuenos Aires Ministro Pistarini
15h 01m
1 stop
ORD10:06 amChicago O'Hare Intl
$917
United Airlines
Feb 22
ORD9:15 pmChicago O'Hare Intl
31h 05m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Mar 2
EZE10:05 pmBuenos Aires Ministro Pistarini
24h 48m
1 stop
ORD7:53 pmChicago O'Hare Intl
$926

momondo Fare Finder

 
Customize your flight search to find flights from Chicago 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 January 28, 2026.
Use the filters below to find and compare flights from Chicago to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Thu 3/12

5:05 am-4:20 am

3 stops21h 15m

Buenos Aires Jorge Newbery

Thu 3/19

9:35 am-6:35 pm

3 stops35h 00m

$912

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 3/28

6:16 pm-5:00 am

2 stops32h 44m

Buenos Aires Ministro Pistarini

Mon 4/6

9:15 pm-11:40 pm

1 stop28h 25m

$915

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Fri 3/27

10:55 am-8:40 pm

3 stops31h 45m

Buenos Aires Jorge Newbery

Tue 4/7

3:45 pm-11:47 pm

3 stops34h 02m

$915

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 5/9

5:15 am-5:05 am

3 stops21h 50m

Buenos Aires Ministro Pistarini

Sat 5/23

9:15 pm-10:10 pm

1 stop26h 55m

$916

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 2/25

2:00 pm-7:20 am

1 stop14h 20m

Buenos Aires Ministro Pistarini

Wed 3/4

10:05 pm-10:06 am

1 stop15h 01m

$917

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

Wed 2/25

9:34 am-7:20 am

2 stops18h 46m

Buenos Aires Ministro Pistarini

Wed 3/4

8:55 pm-12:46 pm

2 stops18h 51m

$921

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 3/11

11:20 pm-3:50 pm

1 stop14h 30m

Buenos Aires Ministro Pistarini

Mon 3/16

1:40 am-9:20 pm

1 stop21h 40m

$922

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Thu 3/12

3:22 pm-7:55 am

1 stop14h 33m

Buenos Aires Ministro Pistarini

Tue 3/24

5:16 am-1:04 am

1 stop21h 48m

$925

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sun 2/22

9:15 pm-7:20 am

1 stop31h 05m

Buenos Aires Ministro Pistarini

Mon 3/2

10:05 pm-10:07 am

1 stop15h 02m

$926

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

Mon 3/2

1:29 pm-9:00 am

2 stops16h 31m

Buenos Aires Ministro Pistarini

Mon 3/23

8:55 pm-12:29 pm

2 stops17h 34m

$941

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 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 is in November. Flight prices, which tend to average around $963, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Buenos Aires from Chicago during October instead. Flights to Buenos Aires in October, while not as cheap as those in November, still average around $972.

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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,118 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 for as low as $760 on momondo.

Can stopping save me money on Chicago to Buenos Aires flights?

You could potentially save up to 35% on your flight if you consider stops on a Chicago to Buenos Aires flight.

How have Chicago to Buenos Aires flight prices changed over time?

When to book flights from Chicago to Buenos Aires

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

Cheap Chicago to Buenos Aires (CHI to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Buenos Aires

Fastest flight time

12h 53m

Direct flights

None
The fastest flight from Chicago to Buenos Aires takes 12h 53m
There are no direct flights from Chicago to Buenos Aires. There are no popular flight routes from Chicago to Buenos Aires.
Search flight deals

  • How far is Chicago to Buenos Aires by plane?

    A flight from Chicago to Buenos Aires will travel around 5596.4 mi. 12h 53m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Chicago to Buenos Aires?

    Prices for flights from Chicago to Buenos Aires are updated daily.

  • How many operators does momondo search for flights from Chicago to Buenos Aires?

  • How old do you have to be to fly from Chicago to Buenos Aires?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Buenos Aires.

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

    The travel and health documents you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Chicago to Buenos Aires?

Best airlines flying from Chicago to Buenos Aires

Compare and see reviews for airlines that fly from Chicago to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
ArajetPriceFrom $360Free CancellationRating
6.6
43 reviews
Search Arajet flights
Copa AirlinesPriceFrom $569Free CancellationRating
7.5
1,560 reviews
Search Copa Airlines flights
AviancaPriceFrom $726Free CancellationRating
6.6
2,490 reviews
Search Avianca flights
DeltaPriceFrom $951Free CancellationRating
7.9
8,128 reviews
Search Delta flights
United AirlinesPriceFrom $951Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,015Free CancellationRating
7.2
11,205 reviews
Search American Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Buenos Aires from Chicago.

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?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to Buenos Aires.

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

Yes. momondo can track prices for Chicago to Buenos Aires flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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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