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Cheap flights from Chicago to Buenos Aires from $282

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 12/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:47 am - 6:05 amMDW-EZE
16h 18m2 stops
Delta Logo
8:55 pm - 9:54 amEZE-MDW
15h 59m1 stop
$761Delta
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Thu, Nov 27 - Mon, Dec 1
Delta Logo
5:30 am - 6:05 amORD-EZE
21h 35m2 stops
Delta Logo
10:25 pm - 5:43 pmEZE-ORD
22h 18m1 stop
$761Delta
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Tue, Dec 9 - Thu, Dec 18
LATAM Airlines Logo
1:14 pm - 9:40 amORD-AEP
17h 26m2 stops
LATAM Airlines Logo
3:40 pm - 8:42 amAEP-ORD
20h 02m2 stops
$761LATAM Airlines
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Fri, Nov 28 - Sat, Dec 6
United Airlines Logo
9:08 pm - 7:20 amORD-EZE
31h 12m1 stop
United Airlines Logo
10:05 pm - 10:02 amEZE-ORD
14h 57m1 stop
$769United Airlines
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Thu, Nov 20 - Wed, Dec 3
Arajet Logo
5:45 am - 12:05 amORD-EZE
15h 20m1 stop
Arajet Logo
11:20 am - 11:40 pmEZE-ORD
14h 20m1 stop
$773Arajet
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Mon, Feb 23 - Tue, Mar 10
United Airlines Logo
9:08 pm - 7:20 amORD-EZE
31h 12m1 stop
United Airlines Logo
10:05 pm - 7:42 amEZE-ORD
36h 37m1 stop
$778United Airlines
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Thu, Nov 20 - Mon, Dec 1
Avianca Logo
10:20 pm - 5:50 amORD-EZE
28h 30m1 stop
Avianca Logo
4:55 pm - 8:20 pmEZE-ORD
30h 25m1 stop
$787Avianca
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Sun, Jan 25 - Sun, Feb 15
Copa Airlines Logo
7:33 am - 7:59 amORD-EZE
21h 26m1 stop
Copa Airlines Logo
12:07 am - 12:52 pmEZE-ORD
15h 45m1 stop
$789Copa Airlines
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Sat, Dec 6 - Sat, Dec 13
Copa Airlines Logo
6:56 am - 1:00 amORD-EZE
15h 04m1 stop
Copa Airlines Logo
3:41 am - 12:05 amEZE-ORD
23h 24m1 stop
$823Copa Airlines
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Thu, Nov 27 - Sun, Nov 30
Avianca Logo
10:20 pm - 5:50 amORD-EZE
28h 30m1 stop
Avianca Logo
1:40 am - 8:20 pmEZE-ORD
21h 40m1 stop
$849Avianca
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Mon, Jan 19 - Sun, Jan 25

United Airlines flights from Chicago to Buenos Aires

Our best United Airlines deals on Chicago to Buenos Aires flight tickets
United Airlines
Nov 13
ORD7:10 amChicago O'Hare Intl
23h 10m
1 stop
EZE9:20 amBuenos Aires Ministro Pistarini
Nov 21
EZE10:05 pmBuenos Aires Ministro Pistarini
19h 48m
1 stop
ORD2:53 pmChicago O'Hare Intl
$761
Find similar
United Airlines
Nov 20
ORD9:08 pmChicago O'Hare Intl
31h 12m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Dec 3
EZE10:05 pmBuenos Aires Ministro Pistarini
14h 57m
1 stop
ORD10:02 amChicago O'Hare Intl
$769
Find similar
United Airlines
Nov 20
ORD9:08 pmChicago O'Hare Intl
31h 12m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Dec 1
EZE10:05 pmBuenos Aires Ministro Pistarini
36h 37m
1 stop
ORD7:42 amChicago O'Hare Intl
$778
Find similar

Avianca flights from Chicago to Buenos Aires

Our best Avianca deals on Chicago to Buenos Aires flight tickets
Avianca
Jan 25
ORD10:20 pmChicago O'Hare Intl
28h 30m
1 stop
EZE5:50 amBuenos Aires Ministro Pistarini
Feb 15
EZE4:55 pmBuenos Aires Ministro Pistarini
30h 25m
1 stop
ORD8:20 pmChicago O'Hare Intl
$787
Find similar
Avianca
Jan 19
ORD10:20 pmChicago O'Hare Intl
28h 30m
1 stop
EZE5:50 amBuenos Aires Ministro Pistarini
Jan 25
EZE1:40 amBuenos Aires Ministro Pistarini
21h 40m
1 stop
ORD8:20 pmChicago O'Hare Intl
$849
Find similar
Avianca
Dec 1
ORD10:20 pmChicago O'Hare Intl
28h 20m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Dec 5
AEP7:00 amBuenos Aires Jorge Newbery
16h 20m
1 stop
ORD8:20 pmChicago O'Hare Intl
$868
Find similar

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 November 6, 2025.
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

MDW - EZE

MDWEZE

Chicago Midway

Thu 11/27

10:47 am-6:05 am

2 stops16h 18m

Buenos Aires Ministro Pistarini

Mon 12/1

8:55 pm-9:54 am

1 stop15h 59m

$761

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Tue 12/9

5:30 am-6:05 am

2 stops21h 35m

Buenos Aires Ministro Pistarini

Thu 12/18

10:25 pm-5:43 pm

1 stop22h 18m

$761

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Fri 11/28

1:14 pm-9:40 am

2 stops17h 26m

Buenos Aires Jorge Newbery

Sat 12/6

3:40 pm-8:42 am

2 stops20h 02m

$761

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Thu 11/20

9:08 pm-7:20 am

1 stop31h 12m

Buenos Aires Ministro Pistarini

Wed 12/3

10:05 pm-10:02 am

1 stop14h 57m

$769

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 2/23

5:45 am-12:05 am

1 stop15h 20m

Buenos Aires Ministro Pistarini

Tue 3/10

11:20 am-11:40 pm

1 stop14h 20m

$773

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Thu 11/20

9:08 pm-7:20 am

1 stop31h 12m

Buenos Aires Ministro Pistarini

Mon 12/1

10:05 pm-7:42 am

1 stop36h 37m

$778

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sun 1/25

10:20 pm-5:50 am

1 stop28h 30m

Buenos Aires Ministro Pistarini

Sun 2/15

4:55 pm-8:20 pm

1 stop30h 25m

$787

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 12/6

7:33 am-7:59 am

1 stop21h 26m

Buenos Aires Ministro Pistarini

Sat 12/13

12:07 am-12:52 pm

1 stop15h 45m

$789

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Thu 11/27

6:56 am-1:00 am

1 stop15h 04m

Buenos Aires Ministro Pistarini

Sun 11/30

3:41 am-12:05 am

1 stop23h 24m

$823

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 1/19

10:20 pm-5:50 am

1 stop28h 30m

Buenos Aires Ministro Pistarini

Sun 1/25

1:40 am-8:20 pm

1 stop21h 40m

$849

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 typical price of a round-trip flight between Chicago and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Chicago is in October. Flight prices, which tend to average around $993, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Buenos Aires from Chicago during November instead. Flights to Buenos Aires in November, while not as cheap as those in October, still average around $1,006.

What is the cheapest day to depart on your flight to Buenos Aires?

On average, the least expensive day to fly to Buenos Aires from Chicago is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,133. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Thursday is $1,268.

What is the cheapest time of day to depart on your flight to Buenos Aires?

Our most recent data shows that the best time of day to fly to Buenos Aires is in the evening. Flights from Chicago to Buenos Aires during this time can be as low as $1,103. Try not to purchase tickets at noon because they tend to be around $1,268. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $1,146 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 $805 on momondo.

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

You could potentially save up to 32% 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?

As of November 2025, prices for Chicago to Buenos Aires flights are approximately 21% cheaper when compared to flights at the same time last year.

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

Direct flights

None
There are no direct flights from Chicago to Buenos Aires. There are no popular flight routes from Chicago to Buenos Aires.
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  • How far is Chicago to Buenos Aires by plane?

    A flight from Chicago to Buenos Aires will travel around 5596.4 mi. 13h 32m 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
7.1
36 reviews
Search Arajet flights
Copa AirlinesPriceFrom $699Free CancellationRating
7.6
1,561 reviews
Search Copa Airlines flights
AviancaPriceFrom $750Free CancellationRating
6.6
2,469 reviews
Search Avianca flights
DeltaPriceFrom $951Free CancellationRating
7.9
8,001 reviews
Search Delta flights
United AirlinesPriceFrom $975Free CancellationRating
7.4
9,004 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,015Free CancellationRating
7.2
11,040 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