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

LATAM Airlines, Arajet, 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 Delta 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 38% 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 November 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.

$329 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

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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

11:00 am - 11:25 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

14h 25m1 stop Punta Cana

$782Arajet

Mon, Apr 26 - Thu, Apr 29

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

16h 35m1 stop Punta Cana

9:15 pm - 11:12 amEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

15h 57m1 stop Punta Cana

$816Arajet

Mon, Apr 5 - Fri, Apr 16

7:55 am - 7:40 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

20h 45m2 stops Fort Lauderdale Punta Cana

8:00 am - 2:00 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

33h 00m2 stops Miami Atlanta Hartsfield-Jackson

$866Multiple Airlines

Mon, Nov 16 - Tue, Dec 1

4:20 am - 7:40 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

24h 20m1 stop Punta Cana

4:55 pm - 10:13 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

32h 18m2 stops Lima J Chavez Intl Mexico City Benito Juarez

$899Multiple Airlines

Sun, Jan 3 - Mon, Jan 25

10:30 pm - 3:40 pmORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

14h 10m1 stop Bogotá El Dorado

1:40 am - 8:30 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

21h 50m1 stop Bogotá El Dorado

$911Avianca

Tue, Dec 1 - Wed, Dec 9

10:30 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

$911Avianca

Tue, Dec 1 - Thu, Dec 10

2:13 pm - 8:00 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

14h 47m1 stop Panama City Tocumen Intl

9:10 am - 12:46 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

30h 36m1 stop Panama City Tocumen Intl

$914Copa Airlines

Wed, Nov 18 - Mon, Nov 30

7:35 am - 4:25 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

17h 50m1 stop Panama City Tocumen Intl

9:10 am - 12:46 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

30h 36m1 stop Panama City Tocumen Intl

$914Copa Airlines

Mon, Nov 16 - Mon, Nov 30

5:45 pm - 9:40 amMDW Chicago Midway-EZE Buenos Aires Ministro Pistarini

12h 55m1 stop Atlanta Hartsfield-Jackson

9:30 pm - 10:05 amEZE Buenos Aires Ministro Pistarini-MDW Chicago Midway

15h 35m1 stop Atlanta Hartsfield-Jackson

$918Delta

Mon, Jan 18 - Thu, Feb 25

6:00 am - 9:40 amMDW Chicago Midway-EZE Buenos Aires Ministro Pistarini

24h 40m1 stop Atlanta Hartsfield-Jackson

11:35 pm - 12:04 pmEZE Buenos Aires Ministro Pistarini-MDW Chicago Midway

15h 29m1 stop Atlanta Hartsfield-Jackson

$920Delta

Mon, Nov 16 - Mon, Nov 30

Cheap last minute flights

Enter your travel dates to find the best prices.

2:13 pm - 12:07 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

30h 54m1 stop Panama City Tocumen Intl

9:10 am - 12:11 amEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

18h 01m1 stop Panama City Tocumen Intl

$942Copa Airlines

Wed, Nov 4 - Fri, Nov 13

6:04 am - 6:20 amMDW Chicago Midway-EZE Buenos Aires Ministro Pistarini

21h 16m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

9:30 pm - 3:12 pmEZE Buenos Aires Ministro Pistarini-MDW Chicago Midway

20h 42m1 stop Atlanta Hartsfield-Jackson

$1,046Delta

Sat, Nov 7 - Fri, Nov 13

8:05 am - 6:20 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

19h 15m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

4:00 am - 11:54 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

22h 54m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,046LATAM Airlines

Sat, Nov 7 - Thu, Nov 12

6:30 am - 6:20 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

20h 50m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

11:35 pm - 12:20 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

15h 45m1 stop Atlanta Hartsfield-Jackson

$1,046Delta

Sat, Nov 7 - Sat, Nov 14

5:45 am - 6:50 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

22h 05m1 stop Punta Cana

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

26h 30m1 stop Punta Cana

$1,075Arajet

Fri, Nov 6 - Wed, Nov 11

5:45 am - 6:50 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

22h 05m1 stop Punta Cana

7:10 pm - 8:30 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

28h 20m2 stops Santiago Arturo Merino Benitez Bogotá El Dorado

$1,076Multiple Airlines

Fri, Nov 6 - Wed, Nov 11

11:10 am - 4:00 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

13h 50m1 stop Punta Cana

5:20 am - 10:10 amEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

31h 50m1 stop Punta Cana

$1,101Arajet

Sat, Nov 7 - Fri, Nov 13

5:45 am - 6:50 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

22h 05m1 stop Punta Cana

12:45 pm - 8:30 pmEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

34h 45m3 stops Rio de Janeiro–Galeão Intl Sao Paulo Guarulhos Intl Bogotá El Dorado

$1,130Multiple Airlines

Fri, Nov 6 - Wed, Nov 11

3:40 pm - 4:00 pmORD Chicago O'Hare Intl-AEP Buenos Aires Jorge Newbery

21h 20m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

8:05 pm - 12:46 pmAEP Buenos Aires Jorge Newbery-ORD Chicago O'Hare Intl

19h 41m2 stops Lima J Chavez Intl New York John F Kennedy Intl

$1,162LATAM Airlines

Sat, Nov 7 - Fri, Nov 13

7:35 am - 3:16 amORD Chicago O'Hare Intl-EZE Buenos Aires Ministro Pistarini

16h 41m1 stop Panama City Tocumen Intl

9:10 am - 12:11 amEZE Buenos Aires Ministro Pistarini-ORD Chicago O'Hare Intl

18h 01m1 stop Panama City Tocumen Intl

$1,473Copa Airlines

Sat, Nov 7 - Fri, Nov 13

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Copa Airlines flights from Illinois to Buenos Aires

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

Copa Airlines

Nov 17

ORD2:13 pmChicago O'Hare Intl

29h 07m

1 stop

EZE10:20 pmBuenos Aires Ministro Pistarini

Dec 7

EZE9:10 amBuenos Aires Ministro Pistarini

18h 01m

1 stop

ORD12:11 amChicago O'Hare Intl

$914

Copa Airlines

Nov 13

ORD7:35 amChicago O'Hare Intl

21h 25m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Nov 26

EZE3:40 amBuenos Aires Ministro Pistarini

23h 31m

1 stop

ORD12:11 amChicago O'Hare Intl

$942

Copa Airlines

Feb 9

ORD2:13 pmChicago O'Hare Intl

29h 07m

1 stop

EZE10:20 pmBuenos Aires Ministro Pistarini

Feb 17

EZE2:45 pmBuenos Aires Ministro Pistarini

25h 01m

1 stop

ORD12:46 pmChicago O'Hare Intl

$970

LATAM Airlines flights from Illinois to Buenos Aires

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

LATAM Airlines

Nov 27

MDW11:27 amChicago Midway

17h 08m

1 stop

EZE7:35 amBuenos Aires Ministro Pistarini

Dec 10

EZE9:30 pmBuenos Aires Ministro Pistarini

15h 58m

1 stop

MDW10:28 amChicago Midway

$899

LATAM Airlines

Nov 27

MDW4:13 pmChicago Midway

14h 27m

1 stop

EZE9:40 amBuenos Aires Ministro Pistarini

Dec 10

EZE8:05 pmBuenos Aires Ministro Pistarini

29h 49m

2 stops

MDW10:54 pmChicago Midway

$903

LATAM Airlines

Jan 4

ORD5:30 amChicago O'Hare Intl

23h 05m

1 stop

EZE7:35 amBuenos Aires Ministro Pistarini

Jan 25

EZE11:35 pmBuenos Aires Ministro Pistarini

19h 18m

1 stop

ORD3:53 pmChicago O'Hare Intl

$918

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 4/26

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Thu 4/29

11:00 am-11:25 pm

1 stop14h 25m

$782

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Mon 4/5

5:30 am-12:05 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Fri 4/16

9:15 pm-11:12 am

1 stop15h 57m

$816

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Mon 11/16

7:55 am-7:40 am

2 stops20h 45m

Buenos Aires Ministro Pistarini

Tue 12/1

8:00 am-2:00 pm

2 stops33h 00m

$866

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Sun 1/3

4:20 am-7:40 am

1 stop24h 20m

Buenos Aires Ministro Pistarini

Mon 1/25

4:55 pm-10:13 pm

2 stops32h 18m

$899

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Tue 12/1

10:30 pm-3:40 pm

1 stop14h 10m

Buenos Aires Ministro Pistarini

Wed 12/9

1:40 am-8:30 pm

1 stop21h 50m

$911

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Tue 12/1

10:30 pm-3:40 pm

1 stop14h 10m

Buenos Aires Ministro Pistarini

Thu 12/10

7:25 am-8:30 pm

1 stop16h 05m

$911

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Wed 11/18

2:13 pm-8:00 am

1 stop14h 47m

Buenos Aires Ministro Pistarini

Mon 11/30

9:10 am-12:46 pm

1 stop30h 36m

$914

ChicagoBuenos Aires

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

ORDEZE

Chicago O'Hare Intl

Mon 11/16

7:35 am-4:25 am

1 stop17h 50m

Buenos Aires Ministro Pistarini

Mon 11/30

9:10 am-12:46 pm

1 stop30h 36m

$914

Quickest round-trip

ChicagoBuenos Aires

MDW Chicago Midway - EZE Buenos Aires Ministro Pistarini

MDWEZE

Chicago Midway

Mon 1/18

5:45 pm-9:40 am

1 stop12h 55m

Buenos Aires Ministro Pistarini

Thu 2/25

9:30 pm-10:05 am

1 stop15h 35m

$918

ChicagoBuenos Aires

MDW Chicago Midway - EZE Buenos Aires Ministro Pistarini

MDWEZE

Chicago Midway

Mon 11/16

6:00 am-9:40 am

1 stop24h 40m

Buenos Aires Ministro Pistarini

Mon 11/30

11:35 pm-12:04 pm

1 stop15h 29m

$920

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 April. Flight prices, which tend to average around $984, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Buenos Aires from Illinois during May instead. Flights to Buenos Aires in May, while not as cheap as those in April, still average around $998.

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 $1,232 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 $805 on momondo.

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

You could potentially save up to 32% 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	$329
Fastest flight time	12h 35m
Direct flights	None

The best one-way flight to Buenos Aires from Illinois in the past 72 hours is $329. The best round-trip flight deal from Illinois to Buenos Aires found on momondo in the last 72 hours is $782.

The fastest flight from Illinois to Buenos Aires takes 12h 35m

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 November 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 $576	Free Cancellation	Rating 6.4 60 reviews	Search Arajet flights
LATAM Airlines	PriceFrom $727	Free Cancellation	Rating 7.4 1,969 reviews	Search LATAM Airlines flights
Copa Airlines	PriceFrom $770	Free Cancellation	Rating 7.6 1,552 reviews	Search Copa Airlines flights
Avianca	PriceFrom $792	Free Cancellation	Rating 6.5 2,551 reviews	Search Avianca flights
Delta	PriceFrom $901	Free Cancellation	Rating 7.8 8,697 reviews	Search Delta flights
American Airlines	PriceFrom $968	Free Cancellation	Rating 7.0 12,233 reviews	Search American Airlines flights
United Airlines	PriceFrom $1,015	Free Cancellation	Rating 7.3 10,458 reviews	Search United Airlines flights
Aeromexico	PriceFrom $1,025	Free Cancellation	Rating 7.5 1,428 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 $329

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 11/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Copa Airlines flights from Illinois to Buenos Aires

Our best Copa Airlines 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