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

Arajet, American Airlines, and Delta are the most popular carriers operating from Buenos Aires to Illinois

What airlines fly to Illinois?

American Airlines, Avianca and Copa Airlines 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 44% 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.

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 December 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.

$415 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.

8:40 am - 10:10 pm

EZE

ORD

15h 30m1 stop

4:30 am - 12:05 am

ORD

EZE

17h 35m1 stop

$739Arajet

Sun, May 3 - Mon, May 25

8:40 am - 10:10 pm

EZE

ORD

15h 30m1 stop

11:27 am - 3:45 am

ORD

EZE

14h 18m1 stop

$747Arajet

Sun, May 3 - Sat, May 23

6:15 am - 6:15 pm

EZE

ORD

38h 00m2 stops

4:30 am - 12:05 am

ORD

EZE

17h 35m1 stop

$764Multiple Airlines

Wed, May 6 - Mon, May 25

6:15 am - 6:15 pm

EZE

ORD

38h 00m2 stops

11:27 am - 3:45 am

ORD

EZE

14h 18m1 stop

$773Multiple Airlines

Wed, May 6 - Sat, May 23

11:00 am - 11:40 pm

EZE

ORD

14h 40m1 stop

4:30 am - 12:05 am

ORD

EZE

17h 35m1 stop

$776Arajet

Tue, May 5 - Mon, May 25

3:55 am - 11:42 pm

EZE

STL

21h 47m2 stops

7:05 pm - 9:45 am

STL

EZE

12h 40m1 stop

$979Delta

Mon, Apr 6 - Mon, Jun 15

8:10 pm - 8:52 am

EZE

STL

14h 42m1 stop

1:30 pm - 9:00 pm

STL

EZE

29h 30m2 stops

$1,022LATAM Airlines

Tue, Apr 7 - Fri, Jun 19

2:25 am - 10:29 pm

EZE

MDW

22h 04m2 stops

6:30 am - 8:35 am

MDW

EZE

24h 05m2 stops

$1,024LATAM Airlines

Fri, Mar 20 - Sun, Mar 29

8:10 pm - 12:30 pm

EZE

MDW

18h 20m2 stops

1:00 pm - 9:45 am

MDW

EZE

18h 45m2 stops

$1,055Delta

Tue, Apr 28 - Wed, May 6

10:05 pm - 2:30 pm

EZE

STL

19h 25m2 stops

10:07 am - 7:20 am

STL

EZE

18h 13m1 stop

$1,106United Airlines

Thu, Jan 29 - Thu, Feb 5

Delta flights from Buenos Aires to Illinois

Our best Delta deals on Buenos Aires to Illinois flight tickets

Delta

Apr 6

EZE3:55 amBuenos Aires Ministro Pistarini

21h 47m

2 stops

STL11:42 pmLambert-St Louis

Jun 15

STL7:05 pmLambert-St Louis

12h 40m

1 stop

EZE9:45 amBuenos Aires Ministro Pistarini

$979

Find similar

Delta

Apr 28

EZE8:10 pmBuenos Aires Ministro Pistarini

18h 20m

2 stops

MDW12:30 pmChicago Midway

May 6

MDW5:25 pmChicago Midway

14h 20m

1 stop

EZE9:45 amBuenos Aires Ministro Pistarini

$1,055

Find similar

Delta

Mar 21

EZE11:55 pmBuenos Aires Ministro Pistarini

18h 58m

1 stop

MDW4:53 pmChicago Midway

Mar 25

MDW10:49 amChicago Midway

18h 31m

1 stop

EZE7:20 amBuenos Aires Ministro Pistarini

$1,077

Find similar

Avianca flights from Buenos Aires to Illinois

Our best Avianca deals on Buenos Aires to Illinois flight tickets

Avianca

Dec 18

EZE7:30 amBuenos Aires Ministro Pistarini

15h 50m

1 stop

ORD8:20 pmChicago O'Hare Intl

Jan 5

ORD10:20 pmChicago O'Hare Intl

14h 30m

1 stop

EZE3:50 pmBuenos Aires Ministro Pistarini

$1,130

Find similar

Avianca

Dec 18

EZE7:30 amBuenos Aires Ministro Pistarini

15h 50m

1 stop

ORD8:20 pmChicago O'Hare Intl

Jan 5

ORD10:20 pmChicago O'Hare Intl

14h 30m

1 stop

EZE3:50 pmBuenos Aires Ministro Pistarini

$1,152

Find similar

Avianca

Dec 18

EZE7:30 amBuenos Aires Ministro Pistarini

15h 50m

1 stop

ORD8:20 pmChicago O'Hare Intl

Jan 5

ORD8:51 amChicago O'Hare Intl

17h 59m

2 stops

EZE5:50 amBuenos Aires Ministro Pistarini

$1,237

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Buenos AiresChicago

EZE - ORD

EZEORD

Buenos Aires Ministro Pistarini

Sun 5/3

8:40 am-10:10 pm

1 stop15h 30m

Chicago O'Hare Intl

Mon 5/25

4:30 am-12:05 am

1 stop17h 35m

$739

Buenos AiresChicago

EZE - ORD

EZEORD

Buenos Aires Ministro Pistarini

Sun 5/3

8:40 am-10:10 pm

1 stop15h 30m

Chicago O'Hare Intl

Sat 5/23

11:27 am-3:45 am

1 stop14h 18m

$747

Buenos AiresChicago

EZE - ORD

EZEORD

Buenos Aires Ministro Pistarini

Wed 5/6

6:15 am-6:15 pm

2 stops38h 00m

Chicago O'Hare Intl

Mon 5/25

4:30 am-12:05 am

1 stop17h 35m

$764

Buenos AiresChicago

EZE - ORD

EZEORD

Buenos Aires Ministro Pistarini

Wed 5/6

6:15 am-6:15 pm

2 stops38h 00m

Chicago O'Hare Intl

Sat 5/23

11:27 am-3:45 am

1 stop14h 18m

$773

Buenos AiresChicago

EZE - ORD

EZEORD

Buenos Aires Ministro Pistarini

Tue 5/5

11:00 am-11:40 pm

1 stop14h 40m

Chicago O'Hare Intl

Mon 5/25

4:30 am-12:05 am

1 stop17h 35m

$776

Buenos AiresSt. Louis

EZE - STL

EZESTL

Buenos Aires Ministro Pistarini

Mon 4/6

3:55 am-11:42 pm

2 stops21h 47m

Lambert-St Louis

Mon 6/15

7:05 pm-9:45 am

1 stop12h 40m

$979

Buenos AiresSt. Louis

EZE - STL

EZESTL

Buenos Aires Ministro Pistarini

Tue 4/7

8:10 pm-8:52 am

1 stop14h 42m

Lambert-St Louis

Fri 6/19

1:30 pm-9:00 pm

2 stops29h 30m

$1,022

Buenos AiresChicago

EZE - MDW

EZEMDW

Buenos Aires Ministro Pistarini

Fri 3/20

2:25 am-10:29 pm

2 stops22h 04m

Chicago Midway

Sun 3/29

6:30 am-8:35 am

2 stops24h 05m

$1,024

Buenos AiresChicago

EZE - MDW

EZEMDW

Buenos Aires Ministro Pistarini

Tue 4/28

8:10 pm-12:30 pm

2 stops18h 20m

Chicago Midway

Wed 5/6

1:00 pm-9:45 am

2 stops18h 45m

$1,055

Buenos AiresSt. Louis

EZE - STL

EZESTL

Buenos Aires Ministro Pistarini

Thu 1/29

10:05 pm-2:30 pm

2 stops19h 25m

Lambert-St Louis

Thu 2/5

10:07 am-7:20 am

1 stop18h 13m

$1,106

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 November. Flight prices, which tend to average around $981, 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 November, 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.

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

You could potentially save up to 10% 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

Fastest flight time	14h 42m
Direct flights	None

The fastest flight from Buenos Aires to Illinois takes 14h 42m

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 December 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 2,487 reviews	Search Avianca flights
American Airlines	PriceFrom $694	Free Cancellation	Rating 7.2 11,049 reviews	Search American Airlines flights
Copa Airlines	PriceFrom $750	Free Cancellation	Rating 7.6 1,556 reviews	Search Copa Airlines flights
United Airlines	PriceFrom $831	Free Cancellation	Rating 7.4 9,092 reviews	Search United Airlines flights
Delta	PriceFrom $884	Free Cancellation	Rating 7.9 8,007 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.