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Cheap flights from Illinois to Buenos Aires from $291

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 12/10. 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.
Arajet Logo
4:30 am - 12:05 amORD-EZE
17h 35m1 stop
Arajet Logo
11:00 am - 11:40 pmEZE-ORD
14h 40m1 stop
$763Arajet
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Mon, Mar 30 - Tue, Aug 18
Copa Airlines Logo
6:56 am - 4:22 amORD-EZE
18h 26m1 stop
Copa Airlines Logo
5:16 am - 12:05 amEZE-ORD
21h 49m1 stop
$769Copa Airlines
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Fri, Nov 28 - Sat, Dec 6
Arajet Logo
4:30 am - 12:05 amORD-EZE
17h 35m1 stop
Arajet Logo
8:40 am - 10:10 pmEZE-ORD
15h 30m1 stop
$770Arajet
Find Deal
Mon, Apr 6 - Sun, Apr 19
Multiple Airlines Logo
6:33 pm - 3:40 amORD-EZE
31h 07m3 stops
Multiple Airlines Logo
7:30 am - 8:41 amEZE-ORD
27h 11m3 stops
$771Multiple Airlines
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Tue, Mar 10 - Mon, Mar 16
Multiple Airlines Logo
5:59 pm - 3:40 amORD-EZE
31h 41m3 stops
Multiple Airlines Logo
4:55 pm - 6:15 pmEZE-ORD
27h 20m3 stops
$780Multiple Airlines
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Thu, Mar 12 - Tue, Mar 17
United Airlines Logo
10:07 am - 9:20 amSTL-EZE
20h 13m1 stop
United Airlines Logo
10:05 pm - 3:52 pmEZE-STL
20h 47m1 stop
$830United Airlines
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Tue, Jan 6 - Thu, Jan 29
United Airlines Logo
6:40 pm - 7:20 amSTL-EZE
33h 40m2 stops
United Airlines Logo
11:55 pm - 3:52 pmEZE-STL
18h 57m1 stop
$834United Airlines
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Sun, Jan 11 - Tue, Jan 27
Air Canada Logo
7:15 am - 3:10 pmORD-EZE
28h 55m2 stops
Air Canada Logo
4:45 pm - 8:10 pmEZE-ORD
29h 25m2 stops
$835Air Canada
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Fri, Mar 6 - Fri, Mar 13
Delta Logo
6:55 pm - 7:20 amSTL-EZE
33h 25m1 stop
Delta Logo
8:55 pm - 2:49 pmEZE-STL
20h 54m1 stop
$837Delta
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Sun, Jan 11 - Thu, Jan 29
Delta Logo
6:55 pm - 7:20 amSTL-EZE
33h 25m1 stop
Delta Logo
10:25 pm - 4:39 pmEZE-STL
21h 14m2 stops
$842Delta
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Sun, Jan 11 - Mon, Jan 26

Arajet flights from Illinois to Buenos Aires Ministro Pistarini Airport

Our best Arajet deals on Illinois to Buenos Aires Ministro Pistarini Airport flight tickets
Arajet
Mar 30
ORD4:30 amChicago O'Hare Intl
17h 35m
1 stop
EZE12:05 amBuenos Aires Ministro Pistarini
Aug 18
EZE11:00 amBuenos Aires Ministro Pistarini
14h 40m
1 stop
ORD11:40 pmChicago O'Hare Intl
$763
Find similar
Arajet
Apr 6
ORD4:30 amChicago O'Hare Intl
17h 35m
1 stop
EZE12:05 amBuenos Aires Ministro Pistarini
Apr 19
EZE8:40 amBuenos Aires Ministro Pistarini
15h 30m
1 stop
ORD10:10 pmChicago O'Hare Intl
$770
Find similar
Arajet
Apr 8
ORD5:35 amChicago O'Hare Intl
16h 30m
1 stop
EZE12:05 amBuenos Aires Ministro Pistarini
Apr 18
EZE2:45 amBuenos Aires Ministro Pistarini
21h 25m
1 stop
ORD10:10 pmChicago O'Hare Intl
$772
Find similar

Copa Airlines flights from Illinois to Buenos Aires Ministro Pistarini Airport

Our best Copa Airlines deals on Illinois to Buenos Aires Ministro Pistarini Airport flight tickets
Copa Airlines
Nov 28
ORD6:56 amChicago O'Hare Intl
18h 26m
1 stop
EZE4:22 amBuenos Aires Ministro Pistarini
Dec 6
EZE5:16 amBuenos Aires Ministro Pistarini
21h 49m
1 stop
ORD12:05 amChicago O'Hare Intl
$769
Find similar
Copa Airlines
Nov 28
ORD2:07 pmChicago O'Hare Intl
14h 52m
1 stop
EZE7:59 amBuenos Aires Ministro Pistarini
Dec 5
EZE12:07 amBuenos Aires Ministro Pistarini
15h 45m
1 stop
ORD12:52 pmChicago O'Hare Intl
$789
Find similar
Copa Airlines
Nov 18
STL8:25 amLambert-St Louis
20h 34m
2 stops
EZE7:59 amBuenos Aires Ministro Pistarini
Nov 25
EZE12:08 amBuenos Aires Ministro Pistarini
20h 31m
2 stops
STL5:39 pmLambert-St Louis
$1,204
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momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Buenos Aires Ministro Pistarini 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 10, 2025.
Use the filters below to find and compare flights from Illinois to Buenos Aires Ministro Pistarini Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 3/30

4:30 am-12:05 am

1 stop17h 35m

Buenos Aires Ministro Pistarini

Tue 8/18

11:00 am-11:40 pm

1 stop14h 40m

$763

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Fri 11/28

6:56 am-4:22 am

1 stop18h 26m

Buenos Aires Ministro Pistarini

Sat 12/6

5:16 am-12:05 am

1 stop21h 49m

$769

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 4/6

4:30 am-12:05 am

1 stop17h 35m

Buenos Aires Ministro Pistarini

Sun 4/19

8:40 am-10:10 pm

1 stop15h 30m

$770

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Tue 3/10

6:33 pm-3:40 am

3 stops31h 07m

Buenos Aires Ministro Pistarini

Mon 3/16

7:30 am-8:41 am

3 stops27h 11m

$771

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Thu 3/12

5:59 pm-3:40 am

3 stops31h 41m

Buenos Aires Ministro Pistarini

Tue 3/17

4:55 pm-6:15 pm

3 stops27h 20m

$780

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 1/6

10:07 am-9:20 am

1 stop20h 13m

Buenos Aires Ministro Pistarini

Thu 1/29

10:05 pm-3:52 pm

1 stop20h 47m

$830

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 1/11

6:40 pm-7:20 am

2 stops33h 40m

Buenos Aires Ministro Pistarini

Tue 1/27

11:55 pm-3:52 pm

1 stop18h 57m

$834

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Fri 3/6

7:15 am-3:10 pm

2 stops28h 55m

Buenos Aires Ministro Pistarini

Fri 3/13

4:45 pm-8:10 pm

2 stops29h 25m

$835

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 1/11

6:55 pm-7:20 am

1 stop33h 25m

Buenos Aires Ministro Pistarini

Thu 1/29

8:55 pm-2:49 pm

1 stop20h 54m

$837

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 1/11

6:55 pm-7:20 am

1 stop33h 25m

Buenos Aires Ministro Pistarini

Mon 1/26

10:25 pm-4:39 pm

2 stops21h 14m

$842

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Illinois to Buenos Aires Ministro Pistarini 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 month to fly to Buenos Aires Ministro Pistarini Airport?

If you aren’t able to travel during the month of September, then book flights to Buenos Aires Ministro Pistarini Airport from Illinois during October instead. Flights to Buenos Aires Ministro Pistarini Airport in October, while not as cheap as those in September, still average around $778.

What is the cheapest day to depart on your flight to Buenos Aires Ministro Pistarini Airport?

Our data shows that Sunday is the least expensive day to fly to Buenos Aires Ministro Pistarini Airport. Tickets to fly out on this day can be as low as $1,157. 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 Ministro Pistarini Airport on Thursday is $1,291.

What is the cheapest time of day to depart on your flight to Buenos Aires Ministro Pistarini Airport?

According to our data, the cheapest time of day to fly to Buenos Aires Ministro Pistarini Airport is in the evening. momondo users have found flights departing from Illinois to Buenos Aires Ministro Pistarini Airport in the evening for as low as $1,098. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,249 on average. Flights to Buenos Aires Ministro Pistarini Airport from Illinois at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Buenos Aires Ministro Pistarini Airport?

You are more likely to see cheaper flights to Buenos Aires Ministro Pistarini Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires Ministro Pistarini Airport for around $1,134 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires Ministro Pistarini Airport from Illinois for as low as $805 on momondo.

Can stopping save me money on Illinois to Buenos Aires Ministro Pistarini Airport flights?

You could potentially save up to 32% on your flight if you consider stops on a Illinois to Buenos Aires Ministro Pistarini Airport flight.

Cheap Illinois to Buenos Aires Ministro Pistarini Airport flight deals and tips

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

Direct flights

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

    Prices for flights from Illinois to Buenos Aires Ministro Pistarini Airport were last updated today.

  • How many operators does momondo search for flights from Illinois to Buenos Aires Ministro Pistarini Airport?

  • How old do you have to be to fly from Illinois to Buenos Aires Ministro Pistarini Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Buenos Aires Ministro Pistarini Airport.

  • What documentation or ID do you need to fly to Buenos Aires Ministro Pistarini Airport?

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

Best airlines flying from Illinois to Buenos Aires Ministro Pistarini Airport

Compare and see reviews for airlines that fly from Illinois to Buenos Aires Ministro Pistarini Airport with momondo
Airline
Rating
Free Cancellation
Price
ArajetPriceFrom $360Free CancellationRating
7.1
36 reviews
Search Arajet flights
Copa AirlinesPriceFrom $699Free CancellationRating
7.6
1,561 reviews
Search Copa Airlines flights
AviancaPriceFrom $750Free CancellationRating
6.6
2,470 reviews
Search Avianca flights
DeltaPriceFrom $951Free CancellationRating
7.9
8,003 reviews
Search Delta flights
United AirlinesPriceFrom $975Free CancellationRating
7.4
9,012 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,015Free CancellationRating
7.2
11,046 reviews
Search American Airlines flights

Why use momondo?

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

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

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

momondo does allow users to show only those flights to Buenos Aires from Illinois which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Illinois 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 Illinois to Buenos Aires right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Illinois 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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