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

Copa Airlines, Delta, and LATAM 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 36% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 8 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 September 2026, there are 8 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.

$294 Cheap Flights from Illinois to Buenos Aires in 2026/27

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.

12:12 pm - 4:10 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

13h 58m1 stop Punta Cana

5:25 am - 3:30 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

36h 05m2 stops Panama City Tocumen Intl Fort Lauderdale

$839Multiple Airlines

Sat, Oct 3 - Wed, Oct 7

4:30 am - 10:05 pmORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

15h 35m1 stop Punta Cana

11:10 pm - 10:40 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

26h 30m1 stop Punta Cana

$840Arajet

Mon, Oct 26 - Wed, Nov 11

5:45 am - 6:35 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

21h 50m1 stop Punta Cana

11:25 pm - 10:20 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

25h 55m1 stop Punta Cana

$842Arajet

Fri, Mar 5 - Sat, Mar 6

4:20 am - 10:05 pmORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

14h 45m1 stop Punta Cana

2:40 pm - 1:44 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

26h 04m2 stops Miami Atlanta Hartsfield-Jackson

$860Multiple Airlines

Sun, Nov 8 - Sun, Nov 22

11:30 pm - 9:20 amORD Chicago O'Hare Intl-AEP Buenos Aires Jorge Newbery

31h 50m2 stops Bogotá El Dorado Rio de Janeiro–Galeão Intl

7:05 am - 9:30 pmAEP Buenos Aires Jorge Newbery-ORD Chicago O'Hare Intl

16h 25m1 stop Bogotá El Dorado

$885Avianca

Mon, Oct 26 - Thu, Oct 29

11:30 pm - 3:40 pmORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

14h 10m1 stop Bogotá El Dorado

7:25 am - 8:30 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

16h 05m1 stop Bogotá El Dorado

$967Avianca

Thu, Oct 29 - Tue, Nov 3

8:01 am - 12:51 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

14h 50m1 stop Panama City Tocumen Intl

4:15 am - 12:57 amEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

22h 42m1 stop Panama City Tocumen Intl

$1,068Copa Airlines

Fri, Oct 16 - Fri, Oct 23

1:05 pm - 9:50 amMDW Chicago Midway-EZE Buenos Aires Ministro Pistarini

17h 45m2 stops Atlanta Hartsfield-Jackson Miami

7:20 am - 10:54 pmEZE Buenos Aires Ministro Pistarini-MDW Chicago Midway

18h 34m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,076LATAM Airlines

Thu, Nov 12 - Mon, Nov 16

1:02 pm - 9:50 amMDW Chicago Midway-EZE Buenos Aires Ministro Pistarini

17h 48m2 stops Atlanta Hartsfield-Jackson Miami

7:20 am - 10:55 pmEZE Buenos Aires Ministro Pistarini-MDW Chicago Midway

18h 35m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,076LATAM Airlines

Mon, Dec 7 - Mon, Dec 14

2:13 pm - 6:20 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

13h 07m1 stop Panama City Tocumen Intl

12:05 am - 12:46 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

15h 41m1 stop Panama City Tocumen Intl

$1,094Copa Airlines

Wed, Nov 4 - Tue, Nov 17

Cheap last minute flights

Enter your travel dates to find the best prices.

10:44 am - 6:10 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

17h 26m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

7:21 pm - 4:59 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

23h 38m2 stops Santiago Arturo Merino Benitez New York John F Kennedy Intl

$1,116LATAM Airlines

Tue, Sep 22 - Tue, Sep 29

10:44 am - 6:10 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

17h 26m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

8:10 pm - 4:37 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

22h 27m1 stop Atlanta Hartsfield-Jackson

$1,116Delta

Tue, Sep 22 - Tue, Sep 29

5:30 am - 8:00 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

24h 30m1 stop Houston George Bush Intcntl

9:00 pm - 12:25 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

17h 25m1 stop Houston George Bush Intcntl

$1,116United Airlines

Wed, Sep 23 - Sun, Oct 4

8:50 am - 8:00 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

21h 10m1 stop Houston George Bush Intcntl

9:00 pm - 12:25 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

17h 25m1 stop Houston George Bush Intcntl

$1,116United Airlines

Tue, Sep 22 - Tue, Sep 29

10:48 am - 6:10 amMDW Chicago Midway-EZE Buenos Aires Ministro Pistarini

17h 22m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

8:10 pm - 9:49 amEZE Buenos Aires Ministro Pistarini-MDW Chicago Midway

15h 39m1 stop Atlanta Hartsfield-Jackson

$1,116LATAM Airlines

Tue, Sep 22 - Tue, Sep 29

1:00 pm - 9:45 amMDW Chicago Midway-EZE Buenos Aires Ministro Pistarini

18h 45m1 stop Atlanta Hartsfield-Jackson

8:10 pm - 4:15 pmEZE Buenos Aires Ministro Pistarini-MDW Chicago Midway

22h 05m1 stop Atlanta Hartsfield-Jackson

$1,116Delta

Mon, Sep 21 - Mon, Sep 28

8:40 pm - 5:40 amORD Chicago O'Hare Intl-AEP Buenos Aires Jorge Newbery

31h 00m3 stops Toronto Pearson Intl Cancun Bogotá El Dorado

10:30 pm - 9:20 pmAEP Buenos Aires Jorge Newbery-ORD Chicago O'Hare Intl

24h 50m2 stops Santiago Arturo Merino Benitez Bogotá El Dorado

$1,151Multiple Airlines

Tue, Sep 22 - Tue, Sep 29

3:20 pm - 3:15 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

33h 55m1 stop Panama City Tocumen Intl

3:55 am - 11:47 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

45h 52m2 stops Lima J Chavez Intl Mexico City Benito Juarez

$1,170Multiple Airlines

Wed, Sep 23 - Sat, Oct 3

12:47 pm - 7:15 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

16h 28m2 stops New York LaGuardia Miami

10:15 pm - 12:14 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

15h 59m2 stops Miami Charlotte Douglas

$1,391American Airlines

Wed, Sep 23 - Sun, Sep 27

11:20 pm - 5:40 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

28h 20m1 stop Bogotá El Dorado

7:10 am - 9:20 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

16h 10m1 stop Bogotá El Dorado

$1,502Avianca

Fri, Sep 25 - Sat, Oct 10

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Arajet flights from Illinois to Buenos Aires

Our best Arajet deals on Illinois to Buenos Aires flight tickets

Arajet

Oct 26

ORD4:30 amChicago O'Hare Intl

15h 35m

1 stop

EZE10:05 pmBuenos Aires Ministro Pistarini

Nov 11

EZE11:10 pmBuenos Aires Ministro Pistarini

26h 30m

1 stop

ORD10:40 pmChicago O'Hare Intl

$840

Arajet

Mar 5

ORD5:45 amChicago O'Hare Intl

21h 50m

1 stop

EZE6:35 amBuenos Aires Ministro Pistarini

Mar 6

EZE11:25 pmBuenos Aires Ministro Pistarini

25h 55m

1 stop

ORD10:20 pmChicago O'Hare Intl

$842

Arajet

Dec 4

ORD5:45 amChicago O'Hare Intl

24h 47m

1 stop

EZE9:32 amBuenos Aires Ministro Pistarini

Dec 12

EZE2:45 amBuenos Aires Ministro Pistarini

21h 35m

1 stop

ORD9:20 pmChicago O'Hare Intl

$851

LATAM Airlines flights from Illinois to Buenos Aires

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

LATAM Airlines

Nov 12

MDW1:05 pmChicago Midway

17h 45m

2 stops

EZE9:50 amBuenos Aires Ministro Pistarini

Nov 16

EZE7:20 amBuenos Aires Ministro Pistarini

18h 34m

2 stops

MDW10:54 pmChicago Midway

$1,076

LATAM Airlines

Nov 28

MDW5:13 pmChicago Midway

13h 27m

1 stop

EZE9:40 amBuenos Aires Ministro Pistarini

Dec 7

EZE11:35 pmBuenos Aires Ministro Pistarini

13h 54m

1 stop

MDW10:29 amChicago Midway

$1,102

LATAM Airlines

Nov 28

MDW1:05 pmChicago Midway

17h 35m

1 stop

EZE9:40 amBuenos Aires Ministro Pistarini

Dec 7

EZE7:20 amBuenos Aires Ministro Pistarini

18h 35m

2 stops

MDW10:55 pmChicago Midway

$1,107

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

Sat 10/3

12:12 pm-4:10 am

1 stop13h 58m

Buenos Aires Ministro Pistarini

Wed 10/7

5:25 am-3:30 pm

2 stops36h 05m

$839

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Mon 10/26

4:30 am-10:05 pm

1 stop15h 35m

Buenos Aires Ministro Pistarini

Wed 11/11

11:10 pm-10:40 pm

1 stop26h 30m

$840

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Fri 3/5

5:45 am-6:35 am

1 stop21h 50m

Buenos Aires Ministro Pistarini

Sat 3/6

11:25 pm-10:20 pm

1 stop25h 55m

$842

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Sun 11/8

4:20 am-10:05 pm

1 stop14h 45m

Buenos Aires Ministro Pistarini

Sun 11/22

2:40 pm-1:44 pm

2 stops26h 04m

$860

ChicagoBuenos Aires

ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery

ORDAEP

Chicago O'Hare Intl

Mon 10/26

11:30 pm-9:20 am

2 stops31h 50m

Buenos Aires Jorge Newbery

Thu 10/29

7:05 am-9:30 pm

1 stop16h 25m

$885

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Thu 10/29

11:30 pm-3:40 pm

1 stop14h 10m

Buenos Aires Ministro Pistarini

Tue 11/3

7:25 am-8:30 pm

1 stop16h 05m

$967

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Fri 10/16

8:01 am-12:51 am

1 stop14h 50m

Buenos Aires Ministro Pistarini

Fri 10/23

4:15 am-12:57 am

1 stop22h 42m

$1,068

ChicagoBuenos Aires

MDW Chicago Midway - EZE Buenos Aires Ministro Pistarini

MDWEZE

Chicago Midway

Thu 11/12

1:05 pm-9:50 am

2 stops17h 45m

Buenos Aires Ministro Pistarini

Mon 11/16

7:20 am-10:54 pm

2 stops18h 34m

$1,076

ChicagoBuenos Aires

MDW Chicago Midway - EZE Buenos Aires Ministro Pistarini

MDWEZE

Chicago Midway

Mon 12/7

1:02 pm-9:50 am

2 stops17h 48m

Buenos Aires Ministro Pistarini

Mon 12/14

7:20 am-10:55 pm

2 stops18h 35m

$1,076

Quickest round-trip

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Wed 11/4

2:13 pm-6:20 am

1 stop13h 07m

Buenos Aires Ministro Pistarini

Tue 11/17

12:05 am-12:46 pm

1 stop15h 41m

$1,094

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 April instead. Flights to Buenos Aires in April, while not as cheap as those in May, still average around $984.

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 $1,211 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 $625 on momondo.

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

You could potentially save up to 38% 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

Best Price Found	$294
Fastest flight time	13h 15m
Direct flights	None

The best one-way flight to Buenos Aires from Illinois in the past 72 hours is $294. The best round-trip flight deal from Illinois to Buenos Aires found on momondo in the last 72 hours is $839.

The fastest flight from Illinois to Buenos Aires takes 13h 15m

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 September 2026, there are 8 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 55 reviews	Search Arajet flights
LATAM Airlines	PriceFrom $727	Free Cancellation	Rating 7.4 1,981 reviews	Search LATAM Airlines flights
Copa Airlines	PriceFrom $768	Free Cancellation	Rating 7.6 1,539 reviews	Search Copa Airlines flights
Avianca	PriceFrom $792	Free Cancellation	Rating 6.5 2,548 reviews	Search Avianca flights
Delta	PriceFrom $901	Free Cancellation	Rating 7.8 8,591 reviews	Search Delta flights
United Airlines	PriceFrom $951	Free Cancellation	Rating 7.4 10,227 reviews	Search United Airlines flights
American Airlines	PriceFrom $961	Free Cancellation	Rating 7.0 12,080 reviews	Search American Airlines flights
Aeromexico	PriceFrom $1,025	Free Cancellation	Rating 7.5 1,462 reviews	Search Aeromexico 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.

An easier way to manage your Buenos Aires trip

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Nearby airports

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Complete your trip

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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 $294

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 3/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Illinois to Buenos Aires

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

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Filter for what you want

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Arajet flights from Illinois to Buenos Aires

Our best Arajet deals on Illinois to Buenos Aires flight tickets

LATAM Airlines flights from Illinois to Buenos Aires

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

momondo Fare Finder

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

Best Price Found

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

Complete your trip to Buenos Aires

Explore popular destinations other users love

According to popular flight searches on momondo this year