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Cheap flights from Illinois to Buenos Aires from $257

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 10/20. 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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Find the cheapest flights from Illinois to Buenos Aires

Cheap round-trip flights

Multiple Airlines Logo
5:05 am - 9:00 pmORD-AEP
37h 55m3 stops
Multiple Airlines Logo
4:50 am - 10:56 amAEP-ORD
32h 06m3 stops
$791Multiple Airlines
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Sat, Oct 25 - Sat, Nov 1
Multiple Airlines Logo
5:05 am - 9:00 pmORD-AEP
37h 55m3 stops
Multiple Airlines Logo
7:00 am - 10:47 amAEP-ORD
29h 47m2 stops
$800Multiple Airlines
Find Deal
Sat, Oct 25 - Sat, Nov 1
Avianca Logo
10:20 pm - 5:40 amORD-AEP
28h 20m1 stop
Avianca Logo
7:00 am - 8:20 pmAEP-ORD
16h 20m1 stop
$807Avianca
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Tue, Nov 11 - Tue, Nov 18
Multiple Airlines Logo
9:08 pm - 8:20 amORD-AEP
33h 12m3 stops
Multiple Airlines Logo
12:05 am - 8:20 pmAEP-ORD
23h 15m2 stops
$813Multiple Airlines
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Thu, Oct 23 - Tue, Nov 4
Multiple Airlines Logo
5:45 am - 10:00 amORD-AEP
25h 15m2 stops
Multiple Airlines Logo
4:50 am - 9:44 amAEP-ORD
31h 54m3 stops
$814Multiple Airlines
Find Deal
Wed, Nov 26 - Sun, Dec 7
Avianca Logo
10:20 pm - 5:40 amORD-AEP
28h 20m1 stop
Avianca Logo
7:00 am - 8:20 pmAEP-ORD
16h 20m1 stop
$859Avianca
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Wed, Nov 5 - Wed, Nov 12
LATAM Airlines Logo
10:35 am - 7:55 amMDW-AEP
19h 20m2 stops
LATAM Airlines Logo
10:35 am - 12:01 pmAEP-MDW
27h 26m2 stops
$1,015LATAM Airlines
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Wed, Mar 11 - Wed, Mar 18
LATAM Airlines Logo
5:12 pm - 4:00 pmSTL-AEP
19h 48m2 stops
LATAM Airlines Logo
5:15 pm - 6:35 pmAEP-STL
28h 20m2 stops
$1,025LATAM Airlines
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Tue, Nov 18 - Wed, Nov 26
Air Canada Logo
4:05 pm - 5:20 pmSTL-AEP
23h 15m2 stops
Air Canada Logo
1:40 pm - 3:29 pmAEP-STL
28h 49m2 stops
$1,784Air Canada
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Mon, Oct 13 - Thu, Nov 13
Air Canada Logo
4:05 pm - 5:20 pmSTL-AEP
23h 15m2 stops
Air Canada Logo
1:40 pm - 3:29 pmAEP-STL
28h 49m2 stops
$1,809Air Canada
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Mon, Oct 13 - Sat, Nov 8

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
Mar 11
MDW10:35 amChicago Midway
19h 20m
2 stops
AEP7:55 amBuenos Aires Jorge Newbery
Mar 18
AEP10:35 amBuenos Aires Jorge Newbery
27h 26m
2 stops
MDW12:01 pmChicago Midway
$1,015
Find similar
LATAM Airlines
Nov 18
STL5:12 pmLambert-St Louis
19h 48m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Nov 26
AEP5:15 pmBuenos Aires Jorge Newbery
28h 20m
2 stops
STL6:35 pmLambert-St Louis
$1,025
Find similar
LATAM Airlines
Dec 4
MDW10:49 amChicago Midway
18h 06m
2 stops
AEP7:55 amBuenos Aires Jorge Newbery
Dec 12
AEP3:40 pmBuenos Aires Jorge Newbery
21h 14m
2 stops
MDW9:54 amChicago Midway
$1,055
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
Nov 11
ORD10:20 pmChicago O'Hare Intl
28h 20m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Nov 18
AEP7:00 amBuenos Aires Jorge Newbery
16h 20m
1 stop
ORD8:20 pmChicago O'Hare Intl
$807
Find similar
Avianca
Nov 5
ORD10:20 pmChicago O'Hare Intl
28h 20m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Nov 12
AEP7:00 amBuenos Aires Jorge Newbery
16h 20m
1 stop
ORD8:20 pmChicago O'Hare Intl
$859
Find similar
Avianca
Oct 7
ORD10:54 amChicago O'Hare Intl
16h 46m
2 stops
AEP5:40 amBuenos Aires Jorge Newbery
Oct 10
AEP7:00 amBuenos Aires Jorge Newbery
32h 15m
1 stop
ORD1:15 pmChicago O'Hare Intl
$1,357
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 September 29, 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

Sat 10/25

5:05 am-9:00 pm

3 stops37h 55m

Buenos Aires Jorge Newbery

Sat 11/1

4:50 am-10:56 am

3 stops32h 06m

$791

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sat 10/25

5:05 am-9:00 pm

3 stops37h 55m

Buenos Aires Jorge Newbery

Sat 11/1

7:00 am-10:47 am

2 stops29h 47m

$800

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Tue 11/11

10:20 pm-5:40 am

1 stop28h 20m

Buenos Aires Jorge Newbery

Tue 11/18

7:00 am-8:20 pm

1 stop16h 20m

$807

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Thu 10/23

9:08 pm-8:20 am

3 stops33h 12m

Buenos Aires Jorge Newbery

Tue 11/4

12:05 am-8:20 pm

2 stops23h 15m

$813

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Wed 11/26

5:45 am-10:00 am

2 stops25h 15m

Buenos Aires Jorge Newbery

Sun 12/7

4:50 am-9:44 am

3 stops31h 54m

$814

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Wed 11/5

10:20 pm-5:40 am

1 stop28h 20m

Buenos Aires Jorge Newbery

Wed 11/12

7:00 am-8:20 pm

1 stop16h 20m

$859

ChicagoBuenos Aires

MDW - AEP

MDWAEP

Chicago Midway

Wed 3/11

10:35 am-7:55 am

2 stops19h 20m

Buenos Aires Jorge Newbery

Wed 3/18

10:35 am-12:01 pm

2 stops27h 26m

$1,015

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Tue 11/18

5:12 pm-4:00 pm

2 stops19h 48m

Buenos Aires Jorge Newbery

Wed 11/26

5:15 pm-6:35 pm

2 stops28h 20m

$1,025

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Mon 10/13

4:05 pm-5:20 pm

2 stops23h 15m

Buenos Aires Jorge Newbery

Thu 11/13

1:40 pm-3:29 pm

2 stops28h 49m

$1,784

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Mon 10/13

4:05 pm-5:20 pm

2 stops23h 15m

Buenos Aires Jorge Newbery

Sat 11/8

1:40 pm-3:29 pm

2 stops28h 49m

$1,809

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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