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Cheap flights from Chicago O'Hare Intl Airport to Buenos Aires from $312

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 O'Hare Intl Airport to Buenos Aires departing on 3/25. 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 Chicago O'Hare Intl Airport to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:48 am - 9:00 pmORD-AEP
35h 12m3 stops
Multiple Airlines Logo
9:45 pm - 9:10 pmAEP-ORD
26h 25m2 stops
$784Multiple Airlines
Find Deal
Sat, Nov 29 - Sat, Dec 6
Multiple Airlines Logo
6:45 am - 12:40 pmORD-AEP
27h 55m2 stops
Multiple Airlines Logo
10:30 pm - 11:40 pmAEP-ORD
27h 10m2 stops
$796Multiple Airlines
Find Deal
Mon, Mar 23 - Mon, Mar 30
Multiple Airlines Logo
6:45 am - 6:20 amORD-AEP
21h 35m2 stops
Multiple Airlines Logo
12:10 am - 9:20 pmAEP-ORD
23h 10m2 stops
$803Multiple Airlines
Find Deal
Mon, Mar 16 - Tue, Mar 24
Multiple Airlines Logo
4:58 pm - 12:40 pmORD-AEP
40h 42m3 stops
Multiple Airlines Logo
1:00 pm - 6:36 pmAEP-ORD
32h 36m3 stops
$804Multiple Airlines
Find Deal
Fri, Nov 28 - Fri, Dec 5
Multiple Airlines Logo
10:27 am - 12:40 pmORD-AEP
23h 13m2 stops
Multiple Airlines Logo
1:00 pm - 6:36 pmAEP-ORD
32h 36m3 stops
$806Multiple Airlines
Find Deal
Sat, Nov 15 - Fri, Dec 5
Multiple Airlines Logo
10:20 pm - 2:20 amORD-AEP
25h 00m2 stops
Multiple Airlines Logo
1:00 pm - 6:36 pmAEP-ORD
32h 36m3 stops
$809Multiple Airlines
Find Deal
Fri, Nov 28 - Fri, Dec 5
LATAM Airlines Logo
2:49 pm - 10:30 amORD-AEP
16h 41m2 stops
LATAM Airlines Logo
5:15 pm - 10:06 amAEP-ORD
19h 51m2 stops
$832LATAM Airlines
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Wed, Jan 21 - Wed, Feb 18
LATAM Airlines Logo
6:45 am - 7:55 amORD-AEP
22h 10m2 stops
LATAM Airlines Logo
3:40 pm - 8:42 amAEP-ORD
20h 02m2 stops
$858LATAM Airlines
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Fri, Nov 28 - Sat, Dec 6
Avianca Logo
10:20 pm - 5:40 amORD-AEP
28h 20m1 stop
Avianca Logo
7:00 am - 8:20 pmAEP-ORD
16h 20m1 stop
$868Avianca
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Wed, Jan 21 - Wed, Feb 18
LATAM Airlines Logo
1:25 pm - 10:30 amORD-AEP
18h 05m2 stops
LATAM Airlines Logo
3:40 pm - 8:42 amAEP-ORD
20h 02m2 stops
$882LATAM Airlines
Find Deal
Fri, Nov 28 - Sat, Dec 6

LATAM Airlines flights from Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport

Our best LATAM Airlines deals on Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport flight tickets
LATAM Airlines
Jan 21
ORD2:49 pmChicago O'Hare Intl
16h 41m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Feb 18
AEP5:15 pmBuenos Aires Jorge Newbery
19h 51m
2 stops
ORD10:06 amChicago O'Hare Intl
$832
Find similar
LATAM Airlines
Nov 28
ORD6:45 amChicago O'Hare Intl
22h 10m
2 stops
AEP7:55 amBuenos Aires Jorge Newbery
Dec 6
AEP3:40 pmBuenos Aires Jorge Newbery
20h 02m
2 stops
ORD8:42 amChicago O'Hare Intl
$858
Find similar
LATAM Airlines
Nov 28
ORD1:25 pmChicago O'Hare Intl
18h 05m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Dec 6
AEP3:40 pmBuenos Aires Jorge Newbery
20h 02m
2 stops
ORD8:42 amChicago O'Hare Intl
$882
Find similar

Avianca flights from Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport

Our best Avianca deals on Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport flight tickets
Avianca
Jan 21
ORD10:20 pmChicago O'Hare Intl
28h 20m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Feb 18
AEP7:00 amBuenos Aires Jorge Newbery
16h 20m
1 stop
ORD8:20 pmChicago O'Hare Intl
$868
Find similar
Avianca
Nov 15
ORD10:20 pmChicago O'Hare Intl
28h 20m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Nov 24
AEP7:00 amBuenos Aires Jorge Newbery
16h 20m
1 stop
ORD8:20 pmChicago O'Hare Intl
$1,000
Find similar
Avianca
Nov 10
ORD7:35 amChicago O'Hare Intl
19h 05m
2 stops
AEP5:40 amBuenos Aires Jorge Newbery
Nov 17
AEP7:00 amBuenos Aires Jorge Newbery
16h 20m
1 stop
ORD8:20 pmChicago O'Hare Intl
$1,007
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 2, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport 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 11/29

6:48 am-9:00 pm

3 stops35h 12m

Buenos Aires Jorge Newbery

Sat 12/6

9:45 pm-9:10 pm

2 stops26h 25m

$784

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Mon 3/23

6:45 am-12:40 pm

2 stops27h 55m

Buenos Aires Jorge Newbery

Mon 3/30

10:30 pm-11:40 pm

2 stops27h 10m

$796

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Mon 3/16

6:45 am-6:20 am

2 stops21h 35m

Buenos Aires Jorge Newbery

Tue 3/24

12:10 am-9:20 pm

2 stops23h 10m

$803

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Fri 11/28

4:58 pm-12:40 pm

3 stops40h 42m

Buenos Aires Jorge Newbery

Fri 12/5

1:00 pm-6:36 pm

3 stops32h 36m

$804

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sat 11/15

10:27 am-12:40 pm

2 stops23h 13m

Buenos Aires Jorge Newbery

Fri 12/5

1:00 pm-6:36 pm

3 stops32h 36m

$806

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Fri 11/28

10:20 pm-2:20 am

2 stops25h 00m

Buenos Aires Jorge Newbery

Fri 12/5

1:00 pm-6:36 pm

3 stops32h 36m

$809

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Wed 1/21

2:49 pm-10:30 am

2 stops16h 41m

Buenos Aires Jorge Newbery

Wed 2/18

5:15 pm-10:06 am

2 stops19h 51m

$832

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Fri 11/28

6:45 am-7:55 am

2 stops22h 10m

Buenos Aires Jorge Newbery

Sat 12/6

3:40 pm-8:42 am

2 stops20h 02m

$858

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Wed 1/21

10:20 pm-5:40 am

1 stop28h 20m

Buenos Aires Jorge Newbery

Wed 2/18

7:00 am-8:20 pm

1 stop16h 20m

$868

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Fri 11/28

1:25 pm-10:30 am

2 stops18h 05m

Buenos Aires Jorge Newbery

Sat 12/6

3:40 pm-8:42 am

2 stops20h 02m

$882

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 Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport 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.

When to book flights from Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport (ORD to AEP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport

Direct flights

None
There are no direct flights from Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport. There are no popular flight routes from Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport.
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  • How far is Chicago O'Hare Intl to Buenos Aires Jorge Newbery by plane?

    The distance between Chicago O'Hare Intl and Buenos Aires Jorge Newbery is about 5604.5 mi. Typically, this will take 16h 41m by plane in normal conditions.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport?

    Prices for flights from Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport were last updated today.

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Buenos Aires Jorge Newbery Airport.

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

    The travel and health documents you'll need for your trip to Buenos Aires Jorge Newbery Airport 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 Jorge Newbery Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Buenos Aires. momondo saves you time and could save you money on your trip.

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 helps you find the best flight between Chicago and Buenos Aires by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Chicago to Buenos Aires flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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