HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Buenos Aires

$280+ Cheap flights from Illinois to Buenos Aires (BUE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BUE
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Buenos Aires with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Buenos Aires

Cheapest flights from Illinois to Buenos Aires
Explore the most affordable flight options available from Illinois to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

This Mytrip deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:40 am
ORD
-
EZE
3 stops23h 20m
Multiple Airlines
Mon 9/79:15 pm
EZE
-
ORD
2 stops23h 00m
Multiple Airlines
Deal found 1/27$912
This Mytrip deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:05 am
ORD
-
AEP
3 stops21h 15m
Multiple Airlines
Wed 3/1812:10 am
AEP
-
ORD
2 stops23h 10m
Multiple Airlines
Deal found 1/27$912
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:35 pm
ORD
-
EZE
1 stop13h 10m
Multiple Airlines
Fri 11/69:15 pm
EZE
-
ORD
1 stop14h 42m
Multiple Airlines
Deal found 1/26$914
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/286:16 pm
ORD
-
EZE
2 stops32h 44m
Multiple Airlines
Mon 4/69:15 pm
EZE
-
ORD
1 stop28h 25m
Multiple Airlines
Deal found 1/26$915
This Mytrip deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2710:55 am
ORD
-
AEP
3 stops31h 45m
Multiple Airlines
Tue 4/73:45 pm
AEP
-
ORD
3 stops34h 02m
Multiple Airlines
Deal found 1/26$915
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:15 am
ORD
-
EZE
3 stops21h 50m
Multiple Airlines
Sat 5/239:15 pm
EZE
-
ORD
1 stop26h 55m
Multiple Airlines
Deal found 1/27$916
This FlightHub deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2512:45 pm
MDW
-
EZE
1 stop17h 15m
LATAM Airlines
Wed 3/48:00 am
EZE
-
MDW
2 stops17h 31m
LATAM Airlines
Deal found 1/28$917
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/252:00 pm
ORD
-
EZE
1 stop14h 20m
United Airlines
Wed 3/410:05 pm
EZE
-
ORD
1 stop15h 01m
United Airlines
Deal found 1/28$917
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:53 pm
ORD
-
AEP
2 stops19h 07m
LATAM Airlines
Tue 3/175:15 pm
AEP
-
ORD
2 stops22h 23m
LATAM Airlines
Deal found 1/27$917
This Booking.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2511:20 pm
ORD
-
EZE
1 stop14h 30m
Multiple Airlines
Sat 10/319:15 pm
EZE
-
ORD
1 stop27h 05m
Multiple Airlines
Deal found 1/26$918
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:15 am
ORD
-
EZE
3 stops21h 50m
Multiple Airlines
Sat 5/162:45 am
EZE
-
ORD
1 stop21h 25m
Multiple Airlines
Deal found 1/26$919
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:45 am
ORD
-
EZE
1 stop15h 20m
Multiple Airlines
Mon 4/69:15 pm
EZE
-
ORD
1 stop28h 25m
Multiple Airlines
Deal found 1/26$920

Find flight deals from Illinois to Buenos Aires

Keep the following information in mind while searching for Illinois to Buenos Aires flight deals. Data was last updated January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$912
(Mytrip)

One-way from

$280
(Mytrip)

Popular in

March

Cheapest in

November

Average price

$1,106
Provider with most accurate pricing for Chicago (CHI)-Buenos Aires (BUE) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Buenos Aires (BUE) flights.
Search Deals
From Illinois to Buenos Aires (BUE)
Search Deals
One-way flight from Illinois to Buenos Aires (BUE)
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 28, 2026.
Use the filters below to find and compare flights from Illinois to Buenos Aires that are best for you.

Fly from

Illinois

Fly to

Buenos Aires

Route

Depart

Return

Price

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sat 5/9

5:15 am-5:05 am

3 stops21h 50m

Buenos Aires Ministro Pistarini

Sat 5/23

9:15 pm-10:10 pm

1 stop26h 55m

$916

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

Mon 3/9

6:07 pm-9:00 am

1 stop12h 53m

Buenos Aires Ministro Pistarini

Mon 3/16

8:55 pm-9:56 am

1 stop15h 01m

$917

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 2/25

2:00 pm-7:20 am

1 stop14h 20m

Buenos Aires Ministro Pistarini

Wed 3/4

10:05 pm-10:06 am

1 stop15h 01m

$917

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

Wed 2/25

12:45 pm-9:00 am

1 stop17h 15m

Buenos Aires Ministro Pistarini

Wed 3/4

8:00 am-10:31 pm

2 stops17h 31m

$917

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 2/23

2:00 pm-7:20 am

1 stop14h 20m

Buenos Aires Ministro Pistarini

Mon 3/2

11:55 pm-5:05 pm

1 stop20h 10m

$917

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 3/9

4:00 pm-8:20 am

1 stop14h 20m

Buenos Aires Ministro Pistarini

Mon 3/16

9:05 pm-10:07 am

1 stop15h 02m

$917

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 3/9

9:50 am-6:20 am

2 stops18h 30m

Buenos Aires Ministro Pistarini

Mon 3/16

8:00 am-11:54 pm

2 stops17h 54m

$917

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 3/2

8:53 am-7:20 am

1 stop19h 27m

Buenos Aires Ministro Pistarini

Mon 3/23

9:05 pm-11:10 am

1 stop16h 05m

$917

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 2/25

2:12 pm-10:15 am

1 stop17h 03m

Buenos Aires Ministro Pistarini

Wed 3/4

8:00 am-11:56 pm

2 stops18h 56m

$917

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Tue 4/21

5:53 pm-4:00 pm

2 stops20h 07m

Buenos Aires Jorge Newbery

Tue 4/28

2:55 pm-10:28 am

2 stops21h 33m

$917

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Illinois to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Buenos Aires

What is the cheapest month to book a flight from Illinois to Buenos Aires?

Currently, October is the cheapest month in which you can book a flight from Illinois to Buenos Aires (average of $381). Flying from Illinois to Buenos Aires in June is currently the most expensive (average of $1,144). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Buenos Aires?

    There are many flights that can get you from Illinois to Buenos Aires in 12h 53m. Fly via LATAM Airlines, United Airlines, or Delta to get the fastest option. Airlines will cover a distance of 5603 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Buenos Aires one-way?

    To fly one-way, consider booking your trip with Avianca, which is currently one of the cheapest options available, starting at $331. American Airlines flights start at $752 while deals on United Airlines start at $762 one-way.

  • What are the most popular routes from Illinois to Buenos Aires?

    When deciding which route to take from Illinois to Buenos Aires consider Chicago O'Hare Intl - Buenos Aires Ministro Pistarini, Chicago O'Hare Intl - Buenos Aires Jorge Newbery or Chicago Midway - Buenos Aires Ministro Pistarini as they are the most popular.

  • Can I find deals for flights from Illinois to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Illinois to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Buenos Aires.

  • Can I find deals for business class flights from Illinois to Buenos Aires?

    Yes. Cheapflights offers flight deals from Illinois to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Buenos Aires?

    Currently, October is the cheapest month in which you can book a flight from Illinois to Buenos Aires (average of $381). Flying from Illinois to Buenos Aires in June is currently the most expensive (average of $1,144). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.
Miami to Ministro Pistarini flights
John F Kennedy Intl to Ministro Pistarini flights
Miami to Jorge Newbery flights
John F Kennedy Intl to Jorge Newbery flights
LaGuardia to Ministro Pistarini flights
Newark to Ministro Pistarini flights
Dallas/Fort Worth to Ministro Pistarini flights
Los Angeles to Ministro Pistarini flights
San Francisco to Ministro Pistarini flights
Dallas/Fort Worth to Jorge Newbery flights
Atlanta to Ministro Pistarini flights
Fort Lauderdale to Ministro Pistarini flights
Los Angeles to Jorge Newbery flights
Dulles Intl to Ministro Pistarini flights
San Francisco to Jorge Newbery flights
Seattle to Ministro Pistarini flights
Hobby to Ministro Pistarini flights
Dulles Intl to Jorge Newbery flights
Boston to Ministro Pistarini flights
Baltimore to Ministro Pistarini flights
Orlando to Ministro Pistarini flights
Boston to Jorge Newbery flights
Reagan-National to Ministro Pistarini flights
O'Hare Intl to Ministro Pistarini flights
George Bush Intcntl to Ministro Pistarini flights
Orlando to Jorge Newbery flights
Seattle to Jorge Newbery flights
Newark to Jorge Newbery flights
Denver to Ministro Pistarini flights
Austin to Ministro Pistarini flights
Midway to Ministro Pistarini flights
Hobby to Jorge Newbery flights
Atlanta to Jorge Newbery flights
Austin to Jorge Newbery flights
Love Field to Ministro Pistarini flights
Ontario to Ministro Pistarini flights
Denver to Jorge Newbery flights
Sky Harbor Intl to Ministro Pistarini flights
George Bush Intcntl to Jorge Newbery flights
Philadelphia to Ministro Pistarini flights
Miami to Cordoba flights
San Diego to Ministro Pistarini flights
Raleigh to Ministro Pistarini flights
Minneapolis to Ministro Pistarini flights
Detroit to Ministro Pistarini flights

Top 6 airlines flying from Illinois to Buenos Aires

Discover the top 6 airlines that operate flights from Illinois to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
ArajetCheapest$360Average$878FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$569Average$966FlexibilityNo cancel feeOn-time70%
AviancaCheapest$726Average$990FlexibilityNo cancel feeOn-time71%
DeltaCheapest$951Average$1,239FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$951Average$1,170FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,015Average$1,260FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2026 Cheapflights