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

Arajet, LATAM Airlines, and Delta 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 August 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.

$205 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 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

16h 35m1 stop Punta Cana

9:45 am - 11:40 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

15h 55m1 stop Punta Cana

$530Arajet

Mon, Sep 7 - Thu, Sep 17

5:30 am - 12:05 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

16h 35m1 stop Punta Cana

8:40 am - 10:10 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

15h 30m1 stop Punta Cana

$530Arajet

Mon, Sep 7 - Sun, Sep 20

4:49 pm - 3:00 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

32h 11m2 stops Orlando Punta Cana

11:00 am - 11:40 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

14h 40m1 stop Punta Cana

$658Multiple Airlines

Mon, Oct 19 - Thu, Oct 29

5:30 am - 12:05 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

16h 35m1 stop Punta Cana

5:00 am - 11:47 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

44h 47m2 stops Lima J Chavez Intl Mexico City Benito Juarez

$664Multiple Airlines

Mon, Sep 7 - Tue, Sep 22

8:04 am - 9:40 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

22h 36m2 stops Atlanta Hartsfield-Jackson Miami

3:10 pm - 8:41 amEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

20h 31m2 stops Rio de Janeiro–Galeão Intl Atlanta Hartsfield-Jackson

$886LATAM Airlines

Thu, Nov 12 - Sun, Nov 15

4:30 pm - 11:05 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

16h 35m1 stop New York John F Kennedy Intl

8:50 pm - 3:05 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

20h 15m1 stop Miami

$908American Airlines

Thu, Aug 20 - Mon, Aug 24

4:30 pm - 11:05 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

16h 35m1 stop New York John F Kennedy Intl

8:50 pm - 12:15 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

17h 25m2 stops Miami Charlotte Douglas

$912American Airlines

Thu, Aug 20 - Mon, Aug 24

6:30 am - 8:00 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

23h 30m1 stop Houston George Bush Intcntl

9:00 pm - 12:59 amEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

29h 59m1 stop Houston George Bush Intcntl

$917United Airlines

Sun, Aug 16 - Sun, Aug 23

1:50 pm - 11:30 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

19h 40m2 stops New York John F Kennedy Intl Santiago Arturo Merino Benitez

7:20 am - 11:52 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

18h 32m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$925LATAM Airlines

Mon, Oct 19 - Wed, Oct 28

9:35 pm - 8:00 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

32h 25m1 stop Houston George Bush Intcntl

9:00 pm - 4:41 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

21h 41m1 stop Houston George Bush Intcntl

$926United Airlines

Tue, Aug 18 - Tue, Sep 1

Cheap last minute flights

Enter your travel dates to find the best prices.

6:29 am - 8:00 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

23h 31m1 stop Houston George Bush Intcntl

9:00 pm - 2:50 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

19h 50m1 stop Houston George Bush Intcntl

$908United Airlines

Sun, Aug 9 - Wed, Aug 19

6:29 am - 8:00 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

23h 31m1 stop Houston George Bush Intcntl

9:00 pm - 4:41 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

21h 41m1 stop Houston George Bush Intcntl

$908United Airlines

Sun, Aug 9 - Tue, Aug 25

5:30 am - 12:05 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

16h 35m1 stop Punta Cana

7:10 am - 12:50 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

31h 40m2 stops Bogotá El Dorado Fort Lauderdale

$1,033Multiple Airlines

Mon, Aug 10 - Tue, Aug 25

5:30 am - 12:05 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

16h 35m1 stop Punta Cana

10:45 pm - 3:59 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

43h 14m2 stops Miami Houston George Bush Intcntl

$1,053Multiple Airlines

Mon, Aug 10 - Sun, Aug 23

8:05 am - 9:45 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

23h 40m1 stop Atlanta Hartsfield-Jackson

12:15 pm - 5:06 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

30h 51m2 stops Santiago Arturo Merino Benitez New York John F Kennedy Intl

$1,107LATAM Airlines

Thu, Aug 6 - Sat, Aug 8

4:30 pm - 11:05 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

16h 35m1 stop New York John F Kennedy Intl

9:05 pm - 10:30 amEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

15h 25m1 stop New York John F Kennedy Intl

$1,108American Airlines

Thu, Aug 6 - Thu, Aug 13

2:30 pm - 6:00 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

13h 30m1 stop Miami

10:30 pm - 2:22 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

17h 52m2 stops Miami Charlotte Douglas

$1,112American Airlines

Sun, Aug 9 - Tue, Aug 11

6:25 pm - 6:10 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

33h 45m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

8:10 pm - 12:16 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

18h 06m1 stop Atlanta Hartsfield-Jackson

$1,157LATAM Airlines

Mon, Aug 10 - Tue, Aug 18

8:05 am - 9:45 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

23h 40m1 stop Atlanta Hartsfield-Jackson

8:10 pm - 4:51 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

22h 41m1 stop Atlanta Hartsfield-Jackson

$1,213Delta

Thu, Aug 6 - Tue, Aug 25

8:05 am - 9:45 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

23h 40m1 stop Atlanta Hartsfield-Jackson

2:30 am - 5:06 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

40h 36m2 stops Sao Paulo Guarulhos Intl New York John F Kennedy Intl

$1,213Delta

Thu, Aug 6 - Thu, Aug 20

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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 9

ORD6:29 amChicago O'Hare Intl

23h 31m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Aug 24

EZE9:00 pmBuenos Aires Ministro Pistarini

15h 15m

1 stop

ORD10:15 amChicago O'Hare Intl

$908

United Airlines

Aug 8

ORD6:40 pmChicago O'Hare Intl

35h 20m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Aug 18

EZE9:00 pmBuenos Aires Ministro Pistarini

21h 41m

1 stop

ORD4:41 pmChicago O'Hare Intl

$917

United Airlines

Aug 18

ORD9:35 pmChicago O'Hare Intl

32h 25m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Sep 1

EZE9:00 pmBuenos Aires Ministro Pistarini

21h 41m

1 stop

ORD4:41 pmChicago O'Hare Intl

$926

Arajet flights from Illinois to Buenos Aires

Our best Arajet deals on Illinois to Buenos Aires flight tickets

Arajet

Sep 7

ORD5:30 amChicago O'Hare Intl

16h 35m

1 stop

EZE12:05 amBuenos Aires Ministro Pistarini

Sep 20

EZE8:40 amBuenos Aires Ministro Pistarini

15h 30m

1 stop

ORD10:10 pmChicago O'Hare Intl

$530

Arajet

Sep 7

ORD5:30 amChicago O'Hare Intl

16h 35m

1 stop

EZE12:05 amBuenos Aires Ministro Pistarini

Sep 20

EZE8:40 amBuenos Aires Ministro Pistarini

15h 30m

1 stop

ORD10:10 pmChicago O'Hare Intl

$583

Arajet

Sep 7

ORD5:30 amChicago O'Hare Intl

16h 35m

1 stop

EZE12:05 amBuenos Aires Ministro Pistarini

Sep 17

EZE9:45 amBuenos Aires Ministro Pistarini

15h 55m

1 stop

ORD11:40 pmChicago O'Hare Intl

$585

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBuenos Aires

ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini

ORDEZE

Chicago O'Hare Intl

Mon 9/7

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Thu 9/17

9:45 am-11:40 pm

1 stop15h 55m

$530

Quickest round-trip

ChicagoBuenos Aires

ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini

ORDEZE

Chicago O'Hare Intl

Mon 9/7

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Sun 9/20

8:40 am-10:10 pm

1 stop15h 30m

$530

ChicagoBuenos Aires

ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini

ORDEZE

Chicago O'Hare Intl

Mon 10/19

4:49 pm-3:00 am

2 stops32h 11m

Buenos Aires Ministro Pistarini

Thu 10/29

11:00 am-11:40 pm

1 stop14h 40m

$658

ChicagoBuenos Aires

ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini

ORDEZE

Chicago O'Hare Intl

Mon 9/7

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Tue 9/22

5:00 am-11:47 pm

2 stops44h 47m

$664

ChicagoBuenos Aires

ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini

ORDEZE

Chicago O'Hare Intl

Thu 11/12

8:04 am-9:40 am

2 stops22h 36m

Buenos Aires Ministro Pistarini

Sun 11/15

3:10 pm-8:41 am

2 stops20h 31m

$886

ChicagoBuenos Aires

ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini

ORDEZE

Chicago O'Hare Intl

Thu 8/20

4:30 pm-11:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Mon 8/24

8:50 pm-3:05 pm

1 stop20h 15m

$908

ChicagoBuenos Aires

ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini

ORDEZE

Chicago O'Hare Intl

Thu 8/20

4:30 pm-11:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Mon 8/24

8:50 pm-12:15 pm

2 stops17h 25m

$912

ChicagoBuenos Aires

ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini

ORDEZE

Chicago O'Hare Intl

Sun 8/16

6:30 am-8:00 am

1 stop23h 30m

Buenos Aires Ministro Pistarini

Sun 8/23

9:00 pm-12:59 am

1 stop29h 59m

$917

ChicagoBuenos Aires

ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini

ORDEZE

Chicago O'Hare Intl

Mon 10/19

1:50 pm-11:30 am

2 stops19h 40m

Buenos Aires Ministro Pistarini

Wed 10/28

7:20 am-11:52 pm

2 stops18h 32m

$925

ChicagoBuenos Aires

ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini

ORDEZE

Chicago O'Hare Intl

Tue 8/18

9:35 pm-8:00 am

1 stop32h 25m

Buenos Aires Ministro Pistarini

Tue 9/1

9:00 pm-4:41 pm

1 stop21h 41m

$926

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 May. Flight prices, which tend to average around $978, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Buenos Aires from Illinois during November instead. Flights to Buenos Aires in November, while not as cheap as those in May, still average around $986.

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 $1,152 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 49% 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	13h 20m
Direct flights	None

The fastest flight from Illinois to Buenos Aires takes 13h 20m

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 August 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 6.2 53 reviews	Search Arajet flights
LATAM Airlines	PriceFrom $727	Free Cancellation	Rating 7.4 1,973 reviews	Search LATAM Airlines flights
Copa Airlines	PriceFrom $768	Free Cancellation	Rating 7.6 1,566 reviews	Search Copa Airlines flights
Avianca	PriceFrom $792	Free Cancellation	Rating 6.5 2,524 reviews	Search Avianca flights
Delta	PriceFrom $901	Free Cancellation	Rating 7.8 8,490 reviews	Search Delta flights
United Airlines	PriceFrom $951	Free Cancellation	Rating 7.4 10,069 reviews	Search United Airlines flights
American Airlines	PriceFrom $972	Free Cancellation	Rating 7.1 11,855 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 $205

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 9/7. 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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Use the filters below to find and compare flights from Illinois to Buenos Aires that are best for you.

See travel insights to Buenos Aires from

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

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.

Popular cities in Argentina

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

Fly to other destinations from Illinois

According to popular flight searches on momondo this year

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Explore popular destinations other users love

According to popular flight searches on momondo this year