What airlines fly to Buenos Aires?

United Airlines, American Airlines and Avianca are the top three most popular airlines that fly to Buenos Aires from Illinois according to our data. United Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 6 different airlines that fly to Buenos Aires on a routine basis, so you have a few additional options to choose from.

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

Arajet and Avianca are the most popular carriers operating 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 2025, there are 6 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.

$319 Cheap Flights from Illinois to Buenos Aires in 2025

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Find the cheapest flights from Illinois to Buenos Aires

Round-trip

One-way

Last minute

Cheap round-trip flights

5:17 pm - 5:45 amORD-EZE

34h 28m3 stops

6:50 am - 9:58 pmEZE-ORD

41h 08m3 stops

$872

Find Deal

mar., sep. 9 - mar., sep. 23

6:44 pm - 3:50 amORD-EZE

31h 06m3 stops

6:40 am - 9:22 amEZE-ORD

28h 42m3 stops

$873

Find Deal

mar., sep. 30 - mar., oct. 7

5:05 am - 5:20 pmORD-AEP

34h 15m3 stops

12:05 am - 9:18 amAEP-ORD

35h 13m3 stops

$877

Find Deal

sáb., sep. 13 - vie., sep. 19

3:35 pm - 3:10 pmORD-EZE

20h 35m2 stops

4:45 pm - 11:18 amEZE-ORD

21h 33m2 stops

$905Air Canada

Find Deal

sáb., nov. 15 - sáb., nov. 22

3:35 pm - 3:10 pmORD-EZE

21h 35m2 stops

4:45 pm - 2:55 pmEZE-ORD

25h 10m2 stops

$906Air Canada

Find Deal

sáb., oct. 25 - mié., nov. 5

3:30 am - 8:15 pmORD-EZE

13h 45m1 stop

8:40 am - 9:10 pmEZE-ORD

15h 30m1 stop

$914Arajet

Find Deal

dom., dic. 21 - dom., ene. 11

6:56 am - 3:51 amORD-EZE

17h 55m1 stop

2:32 pm - 12:46 pmEZE-ORD

25h 14m1 stop

$918Copa Airlines

Find Deal

mié., nov. 5 - mié., nov. 12

6:56 am - 1:00 amORD-EZE

15h 04m1 stop

3:41 am - 12:05 amEZE-ORD

23h 24m1 stop

$933Copa Airlines

Find Deal

mar., nov. 11 - vie., dic. 12

4:21 pm - 12:50 pmSTL-EZE

17h 29m2 stops

3:30 am - 10:32 pmEZE-STL

22h 02m2 stops

$946GOL

Find Deal

mar., nov. 18 - mar., nov. 25

4:21 pm - 12:50 pmSTL-EZE

17h 29m2 stops

3:30 am - 10:32 pmEZE-STL

22h 02m2 stops

$964GOL

Find Deal

mar., nov. 18 - mar., nov. 25

Avianca flights from Illinois to Buenos Aires

Our best Avianca deals on Illinois to Buenos Aires flight tickets

Avianca

Aug 26

STL8:15 amLambert-St Louis

37h 55m

2 stops

EZE12:10 amBuenos Aires Ministro Pistarini

Sep 3

EZE1:40 amBuenos Aires Ministro Pistarini

18h 43m

2 stops

STL6:23 pmLambert-St Louis

$955

Find similar

Avianca

Sep 1

ORD2:35 pmChicago O'Hare Intl

35h 50m

2 stops

EZE4:25 amBuenos Aires Ministro Pistarini

Sep 8

EZE5:55 amBuenos Aires Ministro Pistarini

33h 20m

2 stops

ORD1:15 pmChicago O'Hare Intl

$963

Find similar

Avianca

Aug 25

ORD2:35 pmChicago O'Hare Intl

13h 10m

1 stop

EZE5:45 amBuenos Aires Ministro Pistarini

Aug 29

EZE1:40 amBuenos Aires Ministro Pistarini

13h 35m

1 stop

ORD1:15 pmChicago O'Hare Intl

$1,025

Find similar

United Airlines flights from Illinois to Buenos Aires

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

United Airlines

Feb 1

STL4:17 pmLambert-St Louis

36h 03m

1 stop

EZE7:20 amBuenos Aires Ministro Pistarini

Feb 9

EZE10:05 pmBuenos Aires Ministro Pistarini

14h 37m

1 stop

STL9:42 amLambert-St Louis

$1,034

Find similar

United Airlines

Feb 1

STL4:17 pmLambert-St Louis

36h 03m

1 stop

EZE7:20 amBuenos Aires Ministro Pistarini

Feb 8

EZE10:05 pmBuenos Aires Ministro Pistarini

21h 30m

1 stop

STL4:35 pmLambert-St Louis

$1,074

Find similar

United Airlines

Jan 31

STL4:17 pmLambert-St Louis

36h 03m

1 stop

EZE7:20 amBuenos Aires Ministro Pistarini

Feb 9

EZE10:05 pmBuenos Aires Ministro Pistarini

14h 37m

1 stop

STL9:42 amLambert-St Louis

$1,075

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

mar. 9/9

5:17 pm-5:45 am

3 stops34h 28m

Buenos Aires Ministro Pistarini

mar. 9/23

6:50 am-9:58 pm

3 stops41h 08m

$872

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

mar. 9/30

6:44 pm-3:50 am

3 stops31h 06m

Buenos Aires Ministro Pistarini

mar. 10/7

6:40 am-9:22 am

3 stops28h 42m

$873

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

sáb. 9/13

5:05 am-5:20 pm

3 stops34h 15m

Buenos Aires Jorge Newbery

vie. 9/19

12:05 am-9:18 am

3 stops35h 13m

$877

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

sáb. 11/15

3:35 pm-3:10 pm

2 stops20h 35m

Buenos Aires Ministro Pistarini

sáb. 11/22

4:45 pm-11:18 am

2 stops21h 33m

$905

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

sáb. 10/25

3:35 pm-3:10 pm

2 stops21h 35m

Buenos Aires Ministro Pistarini

mié. 11/5

4:45 pm-2:55 pm

2 stops25h 10m

$906

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

dom. 12/21

3:30 am-8:15 pm

1 stop13h 45m

Buenos Aires Ministro Pistarini

dom. 1/11

8:40 am-9:10 pm

1 stop15h 30m

$914

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

mié. 11/5

6:56 am-3:51 am

1 stop17h 55m

Buenos Aires Ministro Pistarini

mié. 11/12

2:32 pm-12:46 pm

1 stop25h 14m

$918

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

mar. 11/11

6:56 am-1:00 am

1 stop15h 04m

Buenos Aires Ministro Pistarini

vie. 12/12

3:41 am-12:05 am

1 stop23h 24m

$933

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mar. 11/18

4:21 pm-12:50 pm

2 stops17h 29m

Buenos Aires Ministro Pistarini

mar. 11/25

3:30 am-10:32 pm

2 stops22h 02m

$946

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mar. 11/18

4:21 pm-12:50 pm

2 stops17h 29m

Buenos Aires Ministro Pistarini

mar. 11/25

3:30 am-10:32 pm

2 stops22h 02m

$964

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 September. Flight prices, which tend to average around $1,023, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Buenos Aires from Illinois during July instead. Flights to Buenos Aires in July, while not as cheap as those in September, still average around $1,035.

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

On average, the least expensive day to fly to Buenos Aires from Illinois is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,133. However, this price may fluctuate depending on the airline, the season, and holidays. 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 on Thursday is $1,268.

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

Our most recent data shows that the best time of day to fly to Buenos Aires is in the evening. Flights from Illinois to Buenos Aires during this time can be as low as $1,103. Try not to purchase tickets at noon because they tend to be around $1,268. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight 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 $1,172 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 $781 on momondo.

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

You could potentially save up to 27% 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	$319
Fastest flight time	12h 45m
Direct flights	None
Airports in Buenos Aires	2 airports

The best one-way flight to Buenos Aires from Illinois in the past 72 hours is $319. The best round-trip flight deal from Illinois to Buenos Aires found on momondo in the last 72 hours is $872.

The fastest flight from Illinois to Buenos Aires takes 12h 45m

There are no direct flights from Illinois to Buenos Aires. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Buenos Aires Jorge Newbery Airport, Chicago O'Hare Intl Airport - Buenos Aires Ministro Pistarini Airport and Chicago Midway Airport - Buenos Aires Jorge Newbery Airport.

There are 2 airports near Buenos Aires: Buenos Aires Ministro Pistarini (EZE), Buenos Aires Jorge Newbery (AEP)

Search flight deals

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 2025, there are 6 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
Copa Airlines	PriceFrom $699	Free Cancellation	Rating 7.5 1,510 reviews	Search Copa Airlines flights
Arajet	PriceFrom $736	Free Cancellation	Rating 7.0 34 reviews	Search Arajet flights
Avianca	PriceFrom $753	Free Cancellation	Rating 6.7 2,407 reviews	Search Avianca flights
American Airlines	PriceFrom $1,015	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $1,023	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
United Airlines	PriceFrom $1,093	Free Cancellation	Rating 7.4 8,925 reviews	Search United 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.