Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Chicago to Buenos Aires from $322

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 12/8. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Chicago to Buenos Aires

Cheap round-trip flights

Avianca Logo
10:20 pm - 12:35 amORD-EZE
23h 15m1 stop
Avianca Logo
7:35 am - 8:20 pmEZE-ORD
15h 45m1 stop
$718Avianca
Find Deal
sáb., nov. 8 - dom., nov. 16
Avianca Logo
10:20 pm - 3:50 pmORD-EZE
14h 30m1 stop
Avianca Logo
1:40 am - 9:20 pmEZE-ORD
21h 40m1 stop
$747Avianca
Find Deal
mié., mar. 4 - mar., mar. 17
Copa Airlines Logo
6:56 am - 12:53 amORD-EZE
14h 57m1 stop
Copa Airlines Logo
2:32 pm - 12:46 pmEZE-ORD
25h 14m1 stop
$748Copa Airlines
Find Deal
mié., nov. 19 - dom., nov. 23
Multiple Airlines Logo
10:27 am - 1:25 amORD-EZE
36h 58m2 stops
Multiple Airlines Logo
7:35 am - 8:20 pmEZE-ORD
15h 45m1 stop
$762Multiple Airlines
Find Deal
jue., oct. 23 - mié., nov. 5
Copa Airlines Logo
7:59 am - 12:34 amORD-EZE
14h 35m1 stop
Copa Airlines Logo
3:57 am - 12:05 amEZE-ORD
23h 08m1 stop
$768Copa Airlines
Find Deal
sáb., oct. 25 - sáb., nov. 8
Multiple Airlines Logo
7:43 pm - 6:10 amORD-EZE
32h 27m3 stops
Multiple Airlines Logo
6:20 am - 12:15 pmEZE-ORD
32h 55m3 stops
$792Multiple Airlines
Find Deal
jue., oct. 23 - mié., nov. 5
LATAM Airlines Logo
10:47 am - 6:20 amMDW-EZE
16h 33m2 stops
LATAM Airlines Logo
2:45 pm - 9:54 amEZE-MDW
22h 09m2 stops
$938LATAM Airlines
Find Deal
mié., nov. 19 - mié., dic. 3
LATAM Airlines Logo
11:05 am - 9:35 amMDW-EZE
19h 30m2 stops
LATAM Airlines Logo
7:43 pm - 9:54 amEZE-MDW
17h 11m2 stops
$965LATAM Airlines
Find Deal
sáb., dic. 6 - jue., dic. 11
Delta Logo
10:47 am - 6:20 amMDW-EZE
16h 33m2 stops
Delta Logo
8:55 pm - 4:36 pmEZE-MDW
22h 41m1 stop
$1,015Delta
Find Deal
mié., nov. 26 - lun., dic. 8
Delta Logo
1:14 pm - 10:15 amMDW-EZE
18h 01m2 stops
Delta Logo
8:55 pm - 4:36 pmEZE-MDW
22h 41m1 stop
$1,020Delta
Find Deal
mar., dic. 2 - mié., dic. 10

Delta flights from Chicago to Buenos Aires

Our best Delta deals on Chicago to Buenos Aires flight tickets
Delta
Nov 26
MDW10:47 amChicago Midway
16h 33m
2 stops
EZE6:20 amBuenos Aires Ministro Pistarini
Dec 8
EZE8:55 pmBuenos Aires Ministro Pistarini
22h 41m
1 stop
MDW4:36 pmChicago Midway
$1,015
Find similar
Delta
Dec 2
MDW1:14 pmChicago Midway
18h 01m
2 stops
EZE10:15 amBuenos Aires Ministro Pistarini
Dec 10
EZE8:55 pmBuenos Aires Ministro Pistarini
22h 41m
1 stop
MDW4:36 pmChicago Midway
$1,020
Find similar
Delta
Dec 13
MDW9:29 amChicago Midway
20h 31m
2 stops
EZE9:00 amBuenos Aires Ministro Pistarini
Dec 23
EZE11:55 pmBuenos Aires Ministro Pistarini
20h 25m
2 stops
MDW5:20 pmChicago Midway
$1,060
Find similar

Avianca flights from Chicago to Buenos Aires

Our best Avianca deals on Chicago to Buenos Aires flight tickets
Avianca
Nov 8
ORD10:20 pmChicago O'Hare Intl
23h 15m
1 stop
EZE12:35 amBuenos Aires Ministro Pistarini
Nov 16
EZE7:35 amBuenos Aires Ministro Pistarini
15h 45m
1 stop
ORD8:20 pmChicago O'Hare Intl
$718
Find similar
Avianca
Mar 4
ORD10:20 pmChicago O'Hare Intl
14h 30m
1 stop
EZE3:50 pmBuenos Aires Ministro Pistarini
Mar 17
EZE1:40 amBuenos Aires Ministro Pistarini
21h 40m
1 stop
ORD9:20 pmChicago O'Hare Intl
$747
Find similar
Avianca
Nov 12
ORD10:35 amChicago O'Hare Intl
16h 15m
2 stops
EZE5:50 amBuenos Aires Ministro Pistarini
Nov 23
EZE7:35 amBuenos Aires Ministro Pistarini
15h 45m
1 stop
ORD8:20 pmChicago O'Hare Intl
$803
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 septiembre 16, 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

sáb. 11/8

10:20 pm-12:35 am

1 stop23h 15m

Buenos Aires Ministro Pistarini

dom. 11/16

7:35 am-8:20 pm

1 stop15h 45m

$718

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

mié. 3/4

10:20 pm-3:50 pm

1 stop14h 30m

Buenos Aires Ministro Pistarini

mar. 3/17

1:40 am-9:20 pm

1 stop21h 40m

$747

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

mié. 11/19

6:56 am-12:53 am

1 stop14h 57m

Buenos Aires Ministro Pistarini

dom. 11/23

2:32 pm-12:46 pm

1 stop25h 14m

$748

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

jue. 10/23

10:27 am-1:25 am

2 stops36h 58m

Buenos Aires Ministro Pistarini

mié. 11/5

7:35 am-8:20 pm

1 stop15h 45m

$762

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

sáb. 10/25

7:59 am-12:34 am

1 stop14h 35m

Buenos Aires Ministro Pistarini

sáb. 11/8

3:57 am-12:05 am

1 stop23h 08m

$768

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

jue. 10/23

7:43 pm-6:10 am

3 stops32h 27m

Buenos Aires Ministro Pistarini

mié. 11/5

6:20 am-12:15 pm

3 stops32h 55m

$792

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

mié. 11/19

10:47 am-6:20 am

2 stops16h 33m

Buenos Aires Ministro Pistarini

mié. 12/3

2:45 pm-9:54 am

2 stops22h 09m

$938

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

sáb. 12/6

11:05 am-9:35 am

2 stops19h 30m

Buenos Aires Ministro Pistarini

jue. 12/11

7:43 pm-9:54 am

2 stops17h 11m

$965

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

mié. 11/26

10:47 am-6:20 am

2 stops16h 33m

Buenos Aires Ministro Pistarini

lun. 12/8

8:55 pm-4:36 pm

1 stop22h 41m

$1,015

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

mar. 12/2

1:14 pm-10:15 am

2 stops18h 01m

Buenos Aires Ministro Pistarini

mié. 12/10

8:55 pm-4:36 pm

1 stop22h 41m

$1,020

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 July. Flight prices, which tend to average around $1,027, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of July, then book flights to Buenos Aires from Chicago during September instead. Flights to Buenos Aires in September, while not as cheap as those in July, still average around $1,032.

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 $1,166 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 27% 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 September 2025, prices for Chicago to Buenos Aires flights are approximately 19% 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.
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 51m 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
Copa AirlinesPriceFrom $699Free CancellationRating
7.6
1,531 reviews
Search Copa Airlines flights
ArajetPriceFrom $736Free CancellationRating
7.0
34 reviews
Search Arajet flights
AviancaPriceFrom $753Free CancellationRating
6.7
2,435 reviews
Search Avianca flights
American AirlinesPriceFrom $1,015Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $1,023Free CancellationRating
7.9
7,957 reviews
Search Delta flights
United AirlinesPriceFrom $1,094Free CancellationRating
7.4
8,924 reviews
Search United 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.

An easier way to manage your Buenos Aires trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
jue. 10/16
jue. 10/23
By creating a price alert you accept our terms of use and privacy policy.

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