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Cheap flights from Chicago to Buenos Aires from $304

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 1/12. 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
10:27 am - 3:10 pm
ORD
-
EZE
25h 43m2 stops
Multiple Airlines Logo
3:55 pm - 11:06 pm
EZE
-
ORD
33h 11m2 stops
$777Multiple Airlines
Sat, Feb 28 - Sun, Mar 8
Multiple Airlines Logo
5:45 am - 10:00 am
ORD
-
AEP
25h 15m2 stops
Multiple Airlines Logo
2:30 pm - 1:15 pm
AEP
-
ORD
24h 45m2 stops
$789Multiple Airlines
Wed, Feb 25 - Wed, May 6
LATAM Airlines Logo
2:50 pm - 9:00 am
ORD
-
EZE
15h 10m1 stop
LATAM Airlines Logo
2:45 pm - 8:42 am
EZE
-
ORD
20h 57m2 stops
$791LATAM Airlines
Tue, Feb 3 - Mon, Feb 9
LATAM Airlines Logo
11:18 am - 9:35 am
ORD
-
EZE
19h 17m2 stops
LATAM Airlines Logo
2:45 pm - 10:17 am
EZE
-
ORD
22h 32m2 stops
$795LATAM Airlines
Sun, Mar 1 - Fri, Mar 6
Multiple Airlines Logo
4:20 pm - 12:35 am
ORD
-
EZE
29h 15m2 stops
Multiple Airlines Logo
9:15 pm - 8:57 am
EZE
-
ORD
14h 42m1 stop
$801Multiple Airlines
Thu, Jan 8 - Fri, Jan 23
Multiple Airlines Logo
4:20 pm - 12:35 am
ORD
-
EZE
29h 15m2 stops
Multiple Airlines Logo
9:15 pm - 8:57 am
EZE
-
ORD
14h 42m1 stop
$803Multiple Airlines
Thu, Jan 8 - Fri, Jan 23
Arajet Logo
5:45 am - 12:05 am
ORD
-
EZE
15h 20m1 stop
Arajet Logo
9:15 pm - 8:57 am
EZE
-
ORD
14h 42m1 stop
$805Arajet
Wed, Jan 7 - Fri, Jan 23
Multiple Airlines Logo
5:59 pm - 7:30 am
ORD
-
AEP
35h 31m2 stops
Multiple Airlines Logo
2:30 pm - 1:15 pm
AEP
-
ORD
24h 45m2 stops
$805Multiple Airlines
Sat, Apr 11 - Mon, Apr 27
Arajet Logo
5:45 am - 12:05 am
ORD
-
EZE
15h 20m1 stop
Arajet Logo
11:20 am - 11:40 pm
EZE
-
ORD
14h 20m1 stop
$815Arajet
Wed, Feb 11 - Tue, Mar 10
Delta Logo
1:26 pm - 9:00 am
MDW
-
EZE
16h 34m2 stops
Delta Logo
8:55 pm - 11:59 am
EZE
-
MDW
18h 04m1 stop
$926Delta
Mon, Jan 26 - Tue, Feb 10

Air Canada flights from Chicago to Buenos Aires

Our best Air Canada deals on Chicago to Buenos Aires flight tickets
Air Canada
Apr 23
ORD8:20 pmChicago O'Hare Intl
40h 05m
2 stops
EZE2:25 pmBuenos Aires Ministro Pistarini
Apr 30
EZE4:35 pmBuenos Aires Ministro Pistarini
19h 19m
2 stops
ORD9:54 amChicago O'Hare Intl
$866
Find similar
Air Canada
May 5
ORD3:40 pmChicago O'Hare Intl
20h 50m
2 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
May 14
EZE4:35 pmBuenos Aires Ministro Pistarini
19h 18m
2 stops
ORD9:53 amChicago O'Hare Intl
$868
Find similar
Air Canada
Apr 27
ORD9:08 pmChicago O'Hare Intl
39h 22m
2 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
May 7
EZE4:35 pmBuenos Aires Ministro Pistarini
19h 18m
2 stops
ORD9:53 amChicago O'Hare Intl
$871
Find similar

LATAM Airlines flights from Chicago to Buenos Aires

Our best LATAM Airlines deals on Chicago to Buenos Aires flight tickets
LATAM Airlines
Feb 3
ORD2:50 pmChicago O'Hare Intl
15h 10m
1 stop
EZE9:00 amBuenos Aires Ministro Pistarini
Feb 9
EZE2:45 pmBuenos Aires Ministro Pistarini
20h 57m
2 stops
ORD8:42 amChicago O'Hare Intl
$791
Find similar
LATAM Airlines
Mar 1
ORD11:18 amChicago O'Hare Intl
19h 17m
2 stops
EZE9:35 amBuenos Aires Ministro Pistarini
Mar 6
EZE2:45 pmBuenos Aires Ministro Pistarini
22h 32m
2 stops
ORD10:17 amChicago O'Hare Intl
$795
Find similar
LATAM Airlines
Dec 15
ORD9:49 amChicago O'Hare Intl
18h 31m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Dec 17
EZE2:45 pmBuenos Aires Ministro Pistarini
20h 54m
2 stops
ORD8:39 amChicago O'Hare Intl
$810
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 December 11, 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

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 2/28

10:27 am-3:10 pm

2 stops25h 43m

Buenos Aires Ministro Pistarini

Sun 3/8

3:55 pm-11:06 pm

2 stops33h 11m

$777

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Wed 2/25

5:45 am-10:00 am

2 stops25h 15m

Buenos Aires Jorge Newbery

Wed 5/6

2:30 pm-1:15 pm

2 stops24h 45m

$789

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Tue 2/3

2:50 pm-9:00 am

1 stop15h 10m

Buenos Aires Ministro Pistarini

Mon 2/9

2:45 pm-8:42 am

2 stops20h 57m

$791

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sun 3/1

11:18 am-9:35 am

2 stops19h 17m

Buenos Aires Ministro Pistarini

Fri 3/6

2:45 pm-10:17 am

2 stops22h 32m

$795

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Thu 1/8

4:20 pm-12:35 am

2 stops29h 15m

Buenos Aires Ministro Pistarini

Fri 1/23

9:15 pm-8:57 am

1 stop14h 42m

$801

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Thu 1/8

4:20 pm-12:35 am

2 stops29h 15m

Buenos Aires Ministro Pistarini

Fri 1/23

9:15 pm-8:57 am

1 stop14h 42m

$803

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 1/7

5:45 am-12:05 am

1 stop15h 20m

Buenos Aires Ministro Pistarini

Fri 1/23

9:15 pm-8:57 am

1 stop14h 42m

$805

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sat 4/11

5:59 pm-7:30 am

2 stops35h 31m

Buenos Aires Jorge Newbery

Mon 4/27

2:30 pm-1:15 pm

2 stops24h 45m

$805

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 2/11

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

$815

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

Mon 1/26

1:26 pm-9:00 am

2 stops16h 34m

Buenos Aires Ministro Pistarini

Tue 2/10

8:55 pm-11:59 am

1 stop18h 04m

$926

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 $960, 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 $963.

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 $1,124 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 26% 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 December 2025, prices for Chicago to Buenos Aires flights are approximately 44% 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

Fastest flight time

13h 10m

Direct flights

None
The fastest flight from Chicago to Buenos Aires takes 13h 10m
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 10m 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
6.8
38 reviews
Search Arajet flights
Copa AirlinesPriceFrom $699Free CancellationRating
7.6
1,558 reviews
Search Copa Airlines flights
AviancaPriceFrom $750Free CancellationRating
6.6
2,480 reviews
Search Avianca flights
DeltaPriceFrom $951Free CancellationRating
7.9
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $951Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,015Free CancellationRating
7.2
11,050 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