What airlines fly to Illinois?

American Airlines, Avianca and Delta are the top three most popular airlines that fly to Illinois from Buenos Aires according to our data. American Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

Avianca, Hahn Air, and Arajet are the most popular carriers operating from Buenos Aires to Illinois

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

Prices for flights from Buenos Aires to Illinois are updated daily.

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

There are 5 operators available for flights from Buenos Aires to Illinois as of October 2025.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Buenos Aires to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$425 Cheap Flights from Buenos Aires to Illinois in 2025/26

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Find the cheapest flights from Buenos Aires to Illinois

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:55 pm - 12:30 pmEZE-ORD

22h 35m2 stops

4:30 am - 12:05 amORD-EZE

17h 35m1 stop

$733Multiple Airlines

Find Deal

mar., feb. 3 - lun., abr. 6

7:30 am - 12:09 amEZE-ORD

43h 39m3 stops

5:45 am - 12:05 amORD-EZE

15h 20m1 stop

$737Multiple Airlines

Find Deal

lun., dic. 15 - lun., dic. 29

8:55 pm - 9:52 amEZE-MDW

15h 57m1 stop

9:34 am - 9:00 amMDW-EZE

20h 26m2 stops

$944Delta

Find Deal

mié., nov. 26 - mié., dic. 3

11:30 pm - 9:35 pmEZE-STL

24h 05m1 stop

9:44 am - 7:15 amSTL-EZE

19h 31m1 stop

$976American Airlines

Find Deal

lun., abr. 6 - mié., jun. 10

9:00 pm - 3:04 pmEZE-STL

20h 04m1 stop

11:00 am - 8:00 amSTL-EZE

19h 00m1 stop

$979United Airlines

Find Deal

mar., abr. 7 - lun., jun. 8

9:00 pm - 2:18 pmEZE-STL

19h 18m2 stops

6:15 am - 8:00 amSTL-EZE

23h 45m1 stop

$983United Airlines

Find Deal

mar., abr. 7 - lun., jun. 8

8:55 pm - 11:52 amEZE-MDW

17h 57m1 stop

1:15 pm - 9:00 amMDW-EZE

16h 45m2 stops

$998Delta

Find Deal

jue., nov. 13 - dom., nov. 23

11:30 pm - 9:35 pmEZE-STL

24h 05m1 stop

12:09 pm - 7:35 amSTL-EZE

17h 26m2 stops

$1,030American Airlines

Find Deal

lun., abr. 6 - mié., jun. 10

7:00 am - 8:20 pmAEP-ORD

16h 20m1 stop

8:50 am - 5:40 amORD-AEP

17h 50m2 stops

$1,103Avianca

Find Deal

dom., nov. 2 - mar., nov. 4

7:00 am - 8:20 pmAEP-ORD

16h 20m1 stop

10:20 pm - 5:40 amORD-AEP

28h 20m1 stop

$1,129Avianca

Find Deal

lun., dic. 15 - lun., dic. 29

Air Canada flights from Buenos Aires to Illinois

Our best Air Canada deals on Buenos Aires to Illinois flight tickets

Air Canada

Mar 20

EZE4:45 pmBuenos Aires Ministro Pistarini

29h 15m

2 stops

ORD8:00 pmChicago O'Hare Intl

Apr 19

ORD12:50 pmChicago O'Hare Intl

23h 40m

2 stops

EZE2:30 pmBuenos Aires Ministro Pistarini

$831

Find similar

Air Canada

Mar 16

EZE4:45 pmBuenos Aires Ministro Pistarini

28h 00m

2 stops

ORD6:45 pmChicago O'Hare Intl

Mar 22

ORD7:15 amChicago O'Hare Intl

29h 55m

2 stops

EZE3:10 pmBuenos Aires Ministro Pistarini

$836

Find similar

Air Canada

Apr 22

EZE4:35 pmBuenos Aires Ministro Pistarini

20h 22m

2 stops

ORD10:57 amChicago O'Hare Intl

Apr 27

ORD8:20 pmChicago O'Hare Intl

40h 10m

2 stops

EZE2:30 pmBuenos Aires Ministro Pistarini

$837

Find similar

Avianca flights from Buenos Aires to Illinois

Our best Avianca deals on Buenos Aires to Illinois flight tickets

Avianca

Oct 31

EZE1:40 amBuenos Aires Ministro Pistarini

21h 40m

1 stop

ORD9:20 pmChicago O'Hare Intl

Nov 26

ORD10:20 pmChicago O'Hare Intl

14h 30m

1 stop

EZE3:50 pmBuenos Aires Ministro Pistarini

$920

Find similar

Avianca

Nov 4

EZE1:40 amBuenos Aires Ministro Pistarini

21h 40m

1 stop

ORD8:20 pmChicago O'Hare Intl

Nov 7

ORD8:50 amChicago O'Hare Intl

18h 00m

2 stops

EZE5:50 amBuenos Aires Ministro Pistarini

$1,035

Find similar

Avianca

Nov 2

AEP7:00 amBuenos Aires Jorge Newbery

16h 20m

1 stop

ORD8:20 pmChicago O'Hare Intl

Nov 4

ORD8:50 amChicago O'Hare Intl

17h 50m

2 stops

AEP5:40 amBuenos Aires Jorge Newbery

$1,103

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Buenos AiresChicago

EZE - ORD

EZEORD

Buenos Aires Ministro Pistarini

mar. 2/3

4:55 pm-12:30 pm

2 stops22h 35m

Chicago O'Hare Intl

lun. 4/6

4:30 am-12:05 am

1 stop17h 35m

$733

Buenos AiresChicago

EZE - ORD

EZEORD

Buenos Aires Ministro Pistarini

lun. 12/15

7:30 am-12:09 am

3 stops43h 39m

Chicago O'Hare Intl

lun. 12/29

5:45 am-12:05 am

1 stop15h 20m

$737

Buenos AiresChicago

EZE - MDW

EZEMDW

Buenos Aires Ministro Pistarini

mié. 11/26

8:55 pm-9:52 am

1 stop15h 57m

Chicago Midway

mié. 12/3

9:34 am-9:00 am

2 stops20h 26m

$944

Buenos AiresSt. Louis

EZE - STL

EZESTL

Buenos Aires Ministro Pistarini

lun. 4/6

11:30 pm-9:35 pm

1 stop24h 05m

Lambert-St Louis

mié. 6/10

9:44 am-7:15 am

1 stop19h 31m

$976

Buenos AiresSt. Louis

EZE - STL

EZESTL

Buenos Aires Ministro Pistarini

mar. 4/7

9:00 pm-3:04 pm

1 stop20h 04m

Lambert-St Louis

lun. 6/8

11:00 am-8:00 am

1 stop19h 00m

$979

Buenos AiresSt. Louis

EZE - STL

EZESTL

Buenos Aires Ministro Pistarini

mar. 4/7

9:00 pm-2:18 pm

2 stops19h 18m

Lambert-St Louis

lun. 6/8

6:15 am-8:00 am

1 stop23h 45m

$983

Buenos AiresChicago

EZE - MDW

EZEMDW

Buenos Aires Ministro Pistarini

jue. 11/13

8:55 pm-11:52 am

1 stop17h 57m

Chicago Midway

dom. 11/23

1:15 pm-9:00 am

2 stops16h 45m

$998

Buenos AiresSt. Louis

EZE - STL

EZESTL

Buenos Aires Ministro Pistarini

lun. 4/6

11:30 pm-9:35 pm

1 stop24h 05m

Lambert-St Louis

mié. 6/10

12:09 pm-7:35 am

2 stops17h 26m

$1,030

Buenos AiresChicago

AEP - ORD

AEPORD

Buenos Aires Jorge Newbery

dom. 11/2

7:00 am-8:20 pm

1 stop16h 20m

Chicago O'Hare Intl

mar. 11/4

8:50 am-5:40 am

2 stops17h 50m

$1,103

Buenos AiresChicago

AEP - ORD

AEPORD

Buenos Aires Jorge Newbery

lun. 12/15

7:00 am-8:20 pm

1 stop16h 20m

Chicago O'Hare Intl

lun. 12/29

10:20 pm-5:40 am

1 stop28h 20m

$1,129

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 Buenos Aires to Illinois

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 Illinois?

The cheapest month to fly to Illinois from Buenos Aires is in January. Flight prices, which tend to average around $974, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $1,050.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Buenos Aires to Illinois is on a Wednesday when prices can be found for as low as $1,152. Flights from Buenos Aires to Illinois on a Sunday will generally be more expensive and average around $1,449. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Buenos Aires to Illinois during this time can be as low as $1,178. Flights in the afternoon are often more expensive with an average ticket price of $1,471.

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

You are more likely to see cheaper flights to Illinois from Buenos Aires when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $1,244 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Buenos Aires for as low as $800 on momondo.

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

You could potentially save up to 29% on your flight if you consider stops on a Buenos Aires to Illinois flight.

Cheap Buenos Aires to Illinois flight deals and tips

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

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Buenos Aires to Illinois?
Prices for flights from Buenos Aires to Illinois are updated daily.
How many operators does momondo search for flights from Buenos Aires to Illinois?
There are 5 operators available for flights from Buenos Aires to Illinois as of October 2025.
How old do you have to be to fly from Buenos Aires to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Buenos Aires to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Buenos Aires to Illinois

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

Airline	Rating	Free Cancellation	Price
Avianca	PriceFrom $578	Free Cancellation	Rating 6.6 2,467 reviews	Search Avianca flights
American Airlines	PriceFrom $694	Free Cancellation	Rating 7.2 11,034 reviews	Search American Airlines flights
Copa Airlines	PriceFrom $750	Free Cancellation	Rating 7.6 1,561 reviews	Search Copa Airlines flights
United Airlines	PriceFrom $777	Free Cancellation	Rating 7.4 8,996 reviews	Search United Airlines flights
Delta	PriceFrom $884	Free Cancellation	Rating 7.9 7,998 reviews	Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Buenos Aires to Illinois?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Buenos Aires to Illinois. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Buenos Aires to Illinois with flexible booking policies on momondo?

Flights from Buenos Aires to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Buenos Aires to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Buenos Aires to Illinois right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Buenos Aires to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.