What is the cheapest airline that flies from Illinois to Buenos Aires?

Delta, United Airlines, and Copa Airlines are the most popular carriers operating from Illinois to Buenos Aires

What airlines fly to Buenos Aires?

American Airlines, United Airlines and Copa Airlines are the top three most popular airlines that fly to Buenos Aires from Illinois according to our data. American Airlines is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 7 different airlines that fly to Buenos Aires on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Illinois to Buenos Aires?

Prices for flights from Illinois to Buenos Aires are refreshed on a daily basis.

How many operators does momondo search for flights from Illinois to Buenos Aires?

As of June 2026, there are 7 operators available to choose from for flights from Illinois to Buenos Aires.

How old do you have to be to fly from Illinois to Buenos Aires?

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.

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.

$306 Cheap Flights from Illinois to Buenos Aires in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Buenos Aires

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:30 am - 12:05 am

ORD

EZE

16h 35m

1 stop

7:10 am - 10:40 pm

EZE

ORD

18h 30m

1 stop

$800Arajet

Mon, Oct 19 - Thu, Nov 5

4:30 am - 8:15 pm

ORD

EZE

13h 45m

1 stop

8:40 am - 10:10 pm

EZE

ORD

15h 30m

1 stop

$812Arajet

Mon, Jul 13 - Sun, Jul 26

5:25 pm - 6:30 pm

MDW

AEP

22h 05m

2 stops

2:55 pm - 9:52 am

AEP

MDW

21h 57m

2 stops

$825LATAM Airlines

Mon, Nov 2 - Fri, Nov 6

8:15 am - 7:40 am

ORD

AEP

20h 25m

2 stops

2:55 pm - 10:07 am

AEP

ORD

22h 12m

2 stops

$825LATAM Airlines

Mon, Nov 2 - Fri, Nov 6

5:30 am - 12:05 am

ORD

EZE

16h 35m

1 stop

2:33 pm - 1:26 pm

EZE

ORD

25h 53m

2 stops

$857Multiple Airlines

Mon, Oct 19 - Wed, Nov 18

8:42 am - 1:00 pm

ORD

AEP

26h 18m

2 stops

3:40 am - 9:22 pm

AEP

ORD

19h 42m

2 stops

$944GOL

Sun, Sep 27 - Sun, Oct 4

1:59 am - 5:40 am

ORD

AEP

25h 41m

3 stops

12:50 pm - 9:20 pm

AEP

ORD

34h 30m

2 stops

$959Multiple Airlines

Wed, Aug 26 - Thu, Sep 3

10:35 am - 6:10 am

MDW

EZE

17h 35m

2 stops

7:45 am - 10:10 pm

EZE

MDW

17h 25m

2 stops

$1,104Delta

Mon, Oct 19 - Wed, Nov 4

10:35 am - 7:40 am

MDW

AEP

19h 05m

2 stops

5:05 pm - 9:52 am

AEP

MDW

19h 47m

2 stops

$1,104Delta

Mon, Oct 19 - Sun, Nov 1

5:33 am - 1:00 pm

STL

AEP

29h 27m

2 stops

3:40 am - 11:15 pm

AEP

STL

21h 35m

2 stops

$1,553GOL

Sat, Oct 10 - Thu, Oct 22

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United Airlines flights from Illinois to Buenos Aires

Our best United Airlines deals on Illinois to Buenos Aires flight tickets

United Airlines

Aug 18

ORD4:11 pmChicago O'Hare Intl

13h 49m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Sep 1

EZE9:00 pmBuenos Aires Ministro Pistarini

36h 55m

1 stop

ORD7:55 amChicago O'Hare Intl

$949

United Airlines

Jun 22

ORD6:30 amChicago O'Hare Intl

23h 30m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Jun 26

EZE9:00 pmBuenos Aires Ministro Pistarini

15h 20m

1 stop

ORD10:20 amChicago O'Hare Intl

$1,100

United Airlines

Jul 16

STL2:57 pmLambert-St Louis

15h 03m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Jul 30

EZE9:00 pmBuenos Aires Ministro Pistarini

28h 29m

2 stops

STL11:29 pmLambert-St Louis

$1,182

Arajet flights from Illinois to Buenos Aires

Our best Arajet deals on Illinois to Buenos Aires flight tickets

Arajet

Oct 19

ORD5:30 amChicago O'Hare Intl

16h 35m

1 stop

EZE12:05 amBuenos Aires Ministro Pistarini

Nov 5

EZE7:10 amBuenos Aires Ministro Pistarini

18h 30m

1 stop

ORD10:40 pmChicago O'Hare Intl

$800

Arajet

Jul 13

ORD4:30 amChicago O'Hare Intl

13h 45m

1 stop

EZE8:15 pmBuenos Aires Ministro Pistarini

Jul 26

EZE8:40 amBuenos Aires Ministro Pistarini

15h 30m

1 stop

ORD10:10 pmChicago O'Hare Intl

$812

Arajet

Oct 19

ORD5:30 amChicago O'Hare Intl

16h 35m

1 stop

EZE12:05 amBuenos Aires Ministro Pistarini

Nov 1

EZE8:40 amBuenos Aires Ministro Pistarini

15h 40m

1 stop

ORD9:20 pmChicago O'Hare Intl

$815

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 10/19

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Thu 11/5

7:10 am-10:40 pm

1 stop18h 30m

$800

Quickest round-trip

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 7/13

4:30 am-8:15 pm

1 stop13h 45m

Buenos Aires Ministro Pistarini

Sun 7/26

8:40 am-10:10 pm

1 stop15h 30m

$812

ChicagoBuenos Aires

MDW - AEP

MDWAEP

Chicago Midway

Mon 11/2

5:25 pm-6:30 pm

2 stops22h 05m

Buenos Aires Jorge Newbery

Fri 11/6

2:55 pm-9:52 am

2 stops21h 57m

$825

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Mon 11/2

8:15 am-7:40 am

2 stops20h 25m

Buenos Aires Jorge Newbery

Fri 11/6

2:55 pm-10:07 am

2 stops22h 12m

$825

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 10/19

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Wed 11/18

2:33 pm-1:26 pm

2 stops25h 53m

$857

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Sun 9/27

8:42 am-1:00 pm

2 stops26h 18m

Buenos Aires Jorge Newbery

Sun 10/4

3:40 am-9:22 pm

2 stops19h 42m

$944

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Wed 8/26

1:59 am-5:40 am

3 stops25h 41m

Buenos Aires Jorge Newbery

Thu 9/3

12:50 pm-9:20 pm

2 stops34h 30m

$959

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

Mon 10/19

10:35 am-6:10 am

2 stops17h 35m

Buenos Aires Ministro Pistarini

Wed 11/4

7:45 am-10:10 pm

2 stops17h 25m

$1,104

ChicagoBuenos Aires

MDW - AEP

MDWAEP

Chicago Midway

Mon 10/19

10:35 am-7:40 am

2 stops19h 05m

Buenos Aires Jorge Newbery

Sun 11/1

5:05 pm-9:52 am

2 stops19h 47m

$1,104

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sat 10/10

5:33 am-1:00 pm

2 stops29h 27m

Buenos Aires Jorge Newbery

Thu 10/22

3:40 am-11:15 pm

2 stops21h 35m

$1,553

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois 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

Prices

Airlines

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Illinois is in March. Flight prices, which tend to average around $134, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Buenos Aires from Illinois during January instead. Flights to Buenos Aires in January, while not as cheap as those in March, still average around $330.

How far in advance should I book a flight from Illinois to Buenos Aires?

You are more likely to see cheaper flights to Buenos Aires from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,126 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Illinois for as low as $747 on momondo.

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

You could potentially save up to 61% on your flight if you consider stops on a Illinois to Buenos Aires flight.

Cheap Illinois to Buenos Aires flight deals and tips

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

Fastest flight time	12h 47m
Direct flights	None

The fastest flight from Illinois to Buenos Aires takes 12h 47m

There are no direct flights from Illinois to Buenos Aires. There are no popular flight routes from Illinois to Buenos Aires.

Search flight deals

Frequently asked questions about flying from Illinois to Buenos Aires

When did momondo last update prices for flights from Illinois to Buenos Aires?
Prices for flights from Illinois to Buenos Aires are refreshed on a daily basis.
How many operators does momondo search for flights from Illinois to Buenos Aires?
As of June 2026, there are 7 operators available to choose from for flights from Illinois to Buenos Aires.
How old do you have to be to fly from Illinois to Buenos Aires?
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.
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.

Best airlines flying from Illinois to Buenos Aires

Compare and see reviews for airlines that fly from Illinois to Buenos Aires with momondo

Airline	Rating	Free Cancellation	Price
Arajet	PriceFrom $360	Free Cancellation	Rating 6.5 49 reviews	Search Arajet flights
Copa Airlines	PriceFrom $569	Free Cancellation	Rating 7.6 1,567 reviews	Search Copa Airlines flights
LATAM Airlines	PriceFrom $727	Free Cancellation	Rating 7.4 1,936 reviews	Search LATAM Airlines flights
Avianca	PriceFrom $795	Free Cancellation	Rating 6.5 2,533 reviews	Search Avianca flights
Delta	PriceFrom $901	Free Cancellation	Rating 7.8 8,416 reviews	Search Delta flights
United Airlines	PriceFrom $951	Free Cancellation	Rating 7.4 9,861 reviews	Search United Airlines flights
American Airlines	PriceFrom $972	Free Cancellation	Rating 7.1 11,699 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?

Yes. momondo allows you to filter the results for Illinois to Buenos Aires flights to just show those with flexible booking policies.

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

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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Fly into one of these airports located in Buenos Aires

Buenos Aires Jorge Newbery Airport

Buenos Aires Ministro Pistarini Airport

Cheap flights from Illinois to Buenos Aires from $306

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 9/28. 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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United Airlines flights from Illinois to Buenos Aires

Our best United Airlines deals on Illinois to Buenos Aires flight tickets

Arajet flights from Illinois to Buenos Aires

Our best Arajet deals on Illinois to Buenos Aires flight tickets

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How to get the cheapest flight ticket from Illinois to Buenos Aires

What is the cheapest month to fly to Buenos Aires?

How far in advance should I book a flight from Illinois to Buenos Aires?

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

What is the cheapest airline that flies from Illinois to Buenos Aires?

What airlines fly to Buenos Aires?

Cheap Illinois to Buenos Aires flight deals and tips

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Illinois to Buenos Aires

Best airlines flying from Illinois to Buenos Aires

Compare and see reviews for airlines that fly from Illinois to Buenos Aires with momondo

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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

Fly your favorite airline to Buenos Aires

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Buenos Aires

List of cabin classes available on flights landing in Buenos Aires. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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