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Cheap flights from Illinois to Buenos Aires from $338

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Buenos Aires departing on 1/5. 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.
Multiple Airlines Logo
10:27 am - 8:40 pmORD-AEP
32h 13m3 stops
Multiple Airlines Logo
6:20 am - 11:40 pmAEP-ORD
19h 20m2 stops
$777Multiple Airlines
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Tue, Apr 7 - Tue, Apr 21
Multiple Airlines Logo
10:27 am - 7:30 amORD-AEP
19h 03m2 stops
Multiple Airlines Logo
6:20 am - 11:40 pmAEP-ORD
19h 20m2 stops
$787Multiple Airlines
Find Deal
Tue, Apr 7 - Tue, Apr 21
Multiple Airlines Logo
6:57 pm - 3:40 amORD-AEP
29h 43m3 stops
Multiple Airlines Logo
2:30 pm - 8:20 pmAEP-ORD
32h 50m2 stops
$815Multiple Airlines
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Sat, Jan 17 - Wed, Feb 4
Multiple Airlines Logo
10:27 am - 12:20 amORD-AEP
35h 53m3 stops
Multiple Airlines Logo
7:00 am - 6:15 pmAEP-ORD
37h 15m3 stops
$819Multiple Airlines
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Mon, Mar 16 - Mon, Mar 23
Multiple Airlines Logo
2:35 pm - 11:20 pmORD-AEP
30h 45m2 stops
Multiple Airlines Logo
9:30 am - 6:15 pmAEP-ORD
34h 45m3 stops
$826Multiple Airlines
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Fri, Mar 20 - Tue, Mar 24
Multiple Airlines Logo
9:14 am - 9:20 pmORD-AEP
33h 06m3 stops
Multiple Airlines Logo
5:10 pm - 11:27 amAEP-ORD
21h 17m2 stops
$827Multiple Airlines
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Mon, Feb 9 - Wed, Feb 18
Multiple Airlines Logo
9:14 am - 8:40 pmORD-AEP
32h 26m3 stops
Multiple Airlines Logo
1:50 pm - 10:06 pmAEP-ORD
35h 16m3 stops
$828Multiple Airlines
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Sun, Jan 18 - Sun, Feb 1
Multiple Airlines Logo
5:59 pm - 3:40 amORD-AEP
31h 41m3 stops
Multiple Airlines Logo
1:55 pm - 10:10 pmAEP-ORD
34h 15m2 stops
$829Multiple Airlines
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Sat, Apr 11 - Sat, Apr 18
LATAM Airlines Logo
1:05 pm - 9:40 amMDW-AEP
18h 35m2 stops
LATAM Airlines Logo
5:15 pm - 12:01 pmAEP-MDW
20h 46m2 stops
$1,016LATAM Airlines
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Mon, Mar 16 - Mon, Mar 23
LATAM Airlines Logo
5:00 pm - 4:00 pmSTL-AEP
21h 00m2 stops
LATAM Airlines Logo
5:05 pm - 10:45 amAEP-STL
19h 40m2 stops
$1,018LATAM Airlines
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Tue, Apr 7 - Tue, Apr 21

LATAM Airlines flights from Illinois to Buenos Aires Jorge Newbery Airport

Our best LATAM Airlines deals on Illinois to Buenos Aires Jorge Newbery Airport flight tickets
LATAM Airlines
Apr 7
STL5:00 pmLambert-St Louis
21h 00m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Apr 21
AEP5:05 pmBuenos Aires Jorge Newbery
19h 40m
2 stops
STL10:45 amLambert-St Louis
$1,018
Find similar
LATAM Airlines
Jan 17
MDW5:31 pmChicago Midway
19h 29m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Feb 4
AEP5:15 pmBuenos Aires Jorge Newbery
21h 44m
2 stops
MDW11:59 amChicago Midway
$1,048
Find similar
LATAM Airlines
Mar 8
STL4:00 pmLambert-St Louis
15h 40m
2 stops
AEP9:40 amBuenos Aires Jorge Newbery
Mar 17
AEP5:15 pmBuenos Aires Jorge Newbery
20h 35m
2 stops
STL11:50 amLambert-St Louis
$1,058
Find similar

Avianca flights from Illinois to Buenos Aires Jorge Newbery Airport

Our best Avianca deals on Illinois to Buenos Aires Jorge Newbery Airport flight tickets
Avianca
Dec 1
ORD7:35 amChicago O'Hare Intl
19h 05m
2 stops
AEP5:40 amBuenos Aires Jorge Newbery
Dec 4
AEP7:00 amBuenos Aires Jorge Newbery
16h 20m
1 stop
ORD8:20 pmChicago O'Hare Intl
$1,147
Find similar
Avianca
Nov 27
ORD10:20 pmChicago O'Hare Intl
28h 20m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Dec 4
AEP7:00 amBuenos Aires Jorge Newbery
16h 20m
1 stop
ORD8:20 pmChicago O'Hare Intl
$1,160
Find similar
Avianca
Nov 28
ORD7:35 amChicago O'Hare Intl
19h 05m
2 stops
AEP5:40 amBuenos Aires Jorge Newbery
Dec 6
AEP7:00 amBuenos Aires Jorge Newbery
16h 20m
1 stop
ORD8:20 pmChicago O'Hare Intl
$1,212
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Buenos Aires Jorge Newbery Airport 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 22, 2025.
Use the filters below to find and compare flights from Illinois to Buenos Aires Jorge Newbery Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Tue 4/7

10:27 am-8:40 pm

3 stops32h 13m

Buenos Aires Jorge Newbery

Tue 4/21

6:20 am-11:40 pm

2 stops19h 20m

$777

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Tue 4/7

10:27 am-7:30 am

2 stops19h 03m

Buenos Aires Jorge Newbery

Tue 4/21

6:20 am-11:40 pm

2 stops19h 20m

$787

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sat 1/17

6:57 pm-3:40 am

3 stops29h 43m

Buenos Aires Jorge Newbery

Wed 2/4

2:30 pm-8:20 pm

2 stops32h 50m

$815

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Mon 3/16

10:27 am-12:20 am

3 stops35h 53m

Buenos Aires Jorge Newbery

Mon 3/23

7:00 am-6:15 pm

3 stops37h 15m

$819

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Fri 3/20

2:35 pm-11:20 pm

2 stops30h 45m

Buenos Aires Jorge Newbery

Tue 3/24

9:30 am-6:15 pm

3 stops34h 45m

$826

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Mon 2/9

9:14 am-9:20 pm

3 stops33h 06m

Buenos Aires Jorge Newbery

Wed 2/18

5:10 pm-11:27 am

2 stops21h 17m

$827

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sun 1/18

9:14 am-8:40 pm

3 stops32h 26m

Buenos Aires Jorge Newbery

Sun 2/1

1:50 pm-10:06 pm

3 stops35h 16m

$828

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sat 4/11

5:59 pm-3:40 am

3 stops31h 41m

Buenos Aires Jorge Newbery

Sat 4/18

1:55 pm-10:10 pm

2 stops34h 15m

$829

ChicagoBuenos Aires

MDW - AEP

MDWAEP

Chicago Midway

Mon 3/16

1:05 pm-9:40 am

2 stops18h 35m

Buenos Aires Jorge Newbery

Mon 3/23

5:15 pm-12:01 pm

2 stops20h 46m

$1,016

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Tue 4/7

5:00 pm-4:00 pm

2 stops21h 00m

Buenos Aires Jorge Newbery

Tue 4/21

5:05 pm-10:45 am

2 stops19h 40m

$1,018

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Illinois to Buenos Aires Jorge Newbery Airport

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 time of day to depart on your flight to Buenos Aires Jorge Newbery Airport?

Flying to Buenos Aires Jorge Newbery Airport from Illinois at noon is the least expensive time of day to depart. momondo users have found prices as low as $1,202 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to Buenos Aires Jorge Newbery Airport, so prices are often more expensive at around $1,263 per ticket.

Cheap Illinois to Buenos Aires Jorge Newbery Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Buenos Aires Jorge Newbery Airport

Direct flights

None
There are no direct flights from Illinois to Buenos Aires Jorge Newbery Airport. There are no popular flight routes from Illinois to Buenos Aires Jorge Newbery Airport.
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  • When did momondo last update prices for flights from Illinois to Buenos Aires Jorge Newbery Airport?

    Prices for flights from Illinois to Buenos Aires Jorge Newbery Airport refresh daily.

  • How old do you have to be to fly from Illinois to Buenos Aires Jorge Newbery Airport?

    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 Illinois to Buenos Aires Jorge Newbery Airport.

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

    The required travel and health documents for your Buenos Aires Jorge Newbery Airport 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 Jorge Newbery Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Buenos Aires for you.

Can I find flights from Illinois to Buenos Aires with flexible booking policies on momondo?

All flight searches from Illinois to Buenos Aires on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Illinois to Buenos Aires?

Once you have performed a search for Illinois to Buenos Aires flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Buenos Aires from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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