How long is the flight from Chicago to Buenos Aires?

For as low as $908, LATAM Airlines can have you in Buenos Aires from Chicago in 14h 30m. Airlines will cover a distance of 5619 mi. This flight may include one or multiple stops.

What are the cheapest airlines flying from Chicago to Buenos Aires round-trip?

Cheapflights users have booked flights from Chicago to Buenos Aires round-trip from $360. Other airlines that can offer you cheap pricing are Copa Airlines, from $569, and Avianca, from $726. Users have found that Arajet is 67% cheaper than the other options available to this destination.

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

$353 is the cheapest one-way deal found within the past few days, from Avianca. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $752 and $762, respectively.

In terms of precipitation, rainfall in Buenos Aires ranges from 2.0 - 3.9 inches per month. January is typically the wettest month, when rainfall can reach 3.9 in. June is typically the driest time to visit Buenos Aires when rainfall is around 2.0 in.

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 51.8 F).

What are the most popular routes from Chicago to Buenos Aires?

The most popular route from Chicago to Buenos Aires is Chicago O'Hare Intl - Buenos Aires Ministro Pistarini. You may also consider Chicago O'Hare Intl - Buenos Aires Jorge Newbery or Chicago Midway - Buenos Aires Ministro Pistarini.

What are the most popular airlines that fly from Chicago to Buenos Aires?

When booking a flight from Chicago to Buenos Aires, you may want to consider flying on United Airlines, American Airlines or Copa Airlines as they are the most popular for this route.

What is the cheapest time of day to fly from CHI to BUE?

When flying from Chicago to Buenos Aires, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Chicago-Buenos Aires flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago-Buenos Aires flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago-Buenos Aires flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Chicago-Buenos Aires flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Chicago to Buenos Aires?

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

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

Yes. Cheapflights offers flight deals from Chicago 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.

$271+ Flights from Chicago to Buenos Aires

Q: How much does it cost to fly round-trip from Chicago to Buenos Aires?

Airfare is below average for this route at the moment. Chicago to Buenos Aires flights typically cost between $974 and $1,205 in April. The cheapest round-trip price found within the last 3 days was $766 on Arajet (Apr 4-Apr 26).

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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”

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Cheap flight deals from Chicago to Buenos Aires

Cheapest flights from Chicago to Buenos Aires
Explore the most affordable flight options available from Chicago to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 4, 2026.

Sat 10/311:27 amORD - EZE

1 stop14h 18mArajet

Tue 10/2711:00 amEZE - ORD

1 stop14h 40mArajet

Deal found 1/3

$766

Wed 3/256:45 amORD - EZE

1 stop15h 20mArajet

Mon 4/69:15 pmEZE - ORD

1 stop28h 25mArajet

Deal found 1/4

$767

Wed 3/256:45 amORD - EZE

1 stop15h 20mArajet

Tue 4/711:00 amEZE - ORD

1 stop14h 40mArajet

Deal found 1/3

$768

Wed 3/256:45 amORD - AEP

2 stops32h 15mMultiple Airlines

Mon 4/610:55 pmAEP - ORD

2 stops26h 45mMultiple Airlines

Deal found 1/4

$770

Sat 10/311:27 amORD - EZE

1 stop14h 18mArajet

Sun 10/258:40 amEZE - ORD

1 stop15h 30mArajet

Deal found 1/3

$775

Sat 1/2410:27 amORD - EZE

1 stop14h 18mArajet

Fri 2/69:15 pmEZE - ORD

1 stop14h 42mArajet

Deal found 1/2

$782

Sun 3/12:46 pmORD - EZE

1 stop15h 14mLATAM Airlines

Thu 3/52:45 pmEZE - ORD

2 stops22h 29mLATAM Airlines

Deal found 1/2

$792

Mon 2/95:45 amORD - EZE

1 stop15h 20mArajet

Fri 2/209:15 pmEZE - ORD

1 stop14h 42mArajet

Deal found 1/2

$795

Sun 4/122:35 pmORD - EZE

1 stop13h 10mMultiple Airlines

Sun 4/198:40 amEZE - ORD

1 stop15h 30mMultiple Airlines

Deal found 1/3

$797

Wed 3/256:45 amORD - EZE

1 stop15h 20mMultiple Airlines

Tue 4/71:40 amEZE - ORD

2 stops18h 34mMultiple Airlines

Deal found 1/3

$802

Sun 5/106:34 pmORD - EZE

2 stops37h 26mMultiple Airlines

Sun 5/248:40 amEZE - ORD

1 stop15h 30mMultiple Airlines

Deal found 1/2

$818

Tue 5/196:34 pmORD - EZE

2 stops37h 26mMultiple Airlines

Mon 6/19:15 pmEZE - ORD

1 stop28h 25mMultiple Airlines

Deal found 1/3

$819

Best flights from Chicago to Buenos Aires
Discover carefully curated flight deals from Chicago to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 4, 2026.

Wed 3/256:45 amORD - AEP

2 stops32h 15mMultiple Airlines

Mon 4/610:55 pmAEP - ORD

2 stops26h 45mMultiple Airlines

Deal found 1/4

$770

Wed 3/111:37 pmORD - EZE

2 stops17h 38mLATAM Airlines

Tue 3/178:55 pmEZE - ORD

1 stop15h 05mLATAM Airlines

Deal found 1/3

$878

Mon 3/911:20 pmORD - EZE

1 stop14h 30mAvianca

Sun 3/151:40 amEZE - ORD

1 stop21h 40mAvianca

Deal found 1/3

$908

Wed 1/217:35 amORD - EZE

1 stop14h 29mCopa Airlines

Wed 1/285:16 amEZE - ORD

1 stop22h 08mCopa Airlines

Deal found 1/3

$931

Mon 3/910:45 amMDW - EZE

1 stop20h 15mDelta

Mon 3/168:55 pmEZE - MDW

1 stop22h 00mDelta

Deal found 1/4

$937

Wed 2/45:45 amORD - EZE

1 stop15h 20mMultiple Airlines

Wed 2/117:30 amEZE - ORD

1 stop15h 50mMultiple Airlines

Deal found 1/3

$839

Mon 3/912:47 pmMDW - EZE

2 stops22h 58mLATAM Airlines

Mon 3/168:55 pmEZE - MDW

1 stop15h 01mLATAM Airlines

Deal found 1/4

$897

Wed 3/1111:20 pmORD - EZE

1 stop14h 30mAvianca

Tue 3/177:30 amEZE - ORD

1 stop15h 50mAvianca

Deal found 1/4

$908

Sun 2/222:22 pmORD - EZE

1 stop14h 35mCopa Airlines

Sat 2/283:47 amEZE - ORD

1 stop23h 17mCopa Airlines

Deal found 1/2

$931

Thu 3/2612:47 pmMDW - EZE

1 stop18h 13mDelta

Tue 4/78:10 pmEZE - MDW

1 stop22h 45mDelta

Deal found 1/3

$977

Mon 1/265:15 amORD - AEP

2 stops23h 40mMultiple Airlines

Sun 2/88:05 pmAEP - ORD

2 stops29h 01mMultiple Airlines

Deal found 1/2

$913

Mon 3/95:50 pmORD - EZE

2 stops17h 55mLATAM Airlines

Mon 3/168:00 amEZE - ORD

2 stops17h 59mLATAM Airlines

Deal found 1/3

$917

Sun 3/83:22 pmORD - EZE

1 stop14h 33mCopa Airlines

Sun 3/159:16 amEZE - ORD

1 stop17h 48mCopa Airlines

Deal found 1/2

$931

Sun 3/1511:20 pmORD - AEP

1 stop28h 20mAvianca

Thu 3/197:00 amAEP - ORD

1 stop16h 20mAvianca

Deal found 1/2

$968

Wed 3/255:40 pmMDW - EZE

1 stop13h 20mDelta

Wed 4/88:10 pmEZE - MDW

1 stop22h 45mDelta

Deal found 1/3

$977

Tue 2/37:34 amORD - EZE

1 stop14h 30mCopa Airlines

Fri 3/205:16 amEZE - ORD

1 stop21h 48mCopa Airlines

Deal found 1/4

$931

Thu 3/512:45 pmMDW - AEP

2 stops22h 15mLATAM Airlines

Tue 3/243:40 pmAEP - MDW

2 stops20h 16mLATAM Airlines

Deal found 1/3

$937

Fri 1/166:57 pmORD - AEP

3 stops29h 43mMultiple Airlines

Mon 2/22:30 pmAEP - ORD

2 stops32h 50mMultiple Airlines

Deal found 1/3

$948

Mon 3/305:40 pmMDW - EZE

1 stop14h 05mDelta

Wed 4/88:10 pmEZE - MDW

1 stop17h 52mDelta

Deal found 1/3

$977

Fri 3/278:34 amORD - EZE

1 stop15h 23mCopa Airlines

Thu 4/93:52 amEZE - ORD

1 stop23h 21mCopa Airlines

Deal found 1/4

$931

Thu 3/1211:10 amORD - AEP

2 stops20h 30mLATAM Airlines

Tue 3/248:25 pmAEP - ORD

2 stops18h 32mLATAM Airlines

Deal found 1/4

$937

Sat 1/316:57 pmORD - AEP

3 stops29h 43mMultiple Airlines

Sat 2/72:30 pmAEP - ORD

3 stops32h 50mMultiple Airlines

Deal found 1/1

$986

Mon 3/92:38 pmORD - AEP

2 stops17h 02mLATAM Airlines

Mon 3/168:25 pmAEP - ORD

2 stops18h 32mLATAM Airlines

Deal found 1/3

$937

Wed 3/259:35 amMDW - EZE

2 stops19h 45mDelta

Mon 4/68:10 pmEZE - MDW

2 stops18h 19mDelta

Deal found 1/4

$1,061

Thu 3/510:49 amMDW - EZE

2 stops25h 06mLATAM Airlines

Tue 3/248:55 pmEZE - MDW

1 stop15h 01mLATAM Airlines

Deal found 1/3

$963

Thu 3/51:29 pmMDW - EZE

2 stops16h 31mDelta

Tue 3/2410:25 pmEZE - MDW

2 stops20h 30mDelta

Deal found 1/3

$1,061

Thu 3/265:40 pmMDW - EZE

1 stop13h 20mLATAM Airlines

Wed 4/84:45 pmEZE - MDW

2 stops21h 17mLATAM Airlines

Deal found 1/3

$977

Mon 3/1612:47 pmMDW - AEP

2 stops18h 53mLATAM Airlines

Mon 3/235:15 pmAEP - MDW

2 stops20h 47mLATAM Airlines

Deal found 1/3

$977

Wed 3/2512:47 pmMDW - AEP

2 stops18h 53mLATAM Airlines

Mon 4/65:05 pmAEP - MDW

2 stops20h 57mLATAM Airlines

Deal found 1/4

$977

Thu 3/262:38 pmORD - AEP

2 stops21h 22mLATAM Airlines

Mon 4/68:05 pmAEP - ORD

2 stops18h 52mLATAM Airlines

Deal found 1/4

$977

Last-minute flights from Chicago to Buenos Aires
Discover last-minute flight deals from Chicago to Buenos Aires. Data last updated January 4, 2026 and is based on user searches.

Sat 1/2410:27 amORD - EZE

1 stop14h 18mArajet

Fri 2/69:15 pmEZE - ORD

1 stop14h 42mArajet

Deal found 1/2

$782

Sat 1/249:25 amORD - EZE

2 stops20h 35mMultiple Airlines

Fri 2/69:15 pmEZE - ORD

1 stop14h 42mMultiple Airlines

Deal found 1/2

$822

Mon 2/25:45 amORD - AEP

3 stops29h 55mMultiple Airlines

Wed 2/115:10 pmAEP - ORD

2 stops21h 12mMultiple Airlines

Deal found 1/3

$860

Mon 2/28:45 amORD - EZE

2 stops21h 15mMultiple Airlines

Mon 2/911:00 amEZE - ORD

1 stop24h 18mMultiple Airlines

Deal found 1/3

$867

Mon 2/26:57 pmORD - EZE

1 stop35h 38mMultiple Airlines

Wed 2/118:05 amEZE - ORD

2 stops42h 19mMultiple Airlines

Deal found 1/3

$876

Wed 2/45:45 amORD - EZE

1 stop15h 20mMultiple Airlines

Wed 2/117:30 amEZE - ORD

1 stop15h 50mMultiple Airlines

Deal found 1/3

$839

Fri 2/65:52 pmORD - EZE

3 stops42h 18mMultiple Airlines

Sun 2/158:40 amEZE - ORD

1 stop15h 30mMultiple Airlines

Deal found 1/2

$862

Mon 2/95:45 amORD - EZE

1 stop15h 20mArajet

Fri 2/209:15 pmEZE - ORD

1 stop14h 42mArajet

Deal found 1/2

$795

Mon 2/96:57 pmORD - EZE

2 stops24h 37mMultiple Airlines

Fri 2/209:15 pmEZE - ORD

1 stop14h 42mMultiple Airlines

Deal found 1/2

$858

Mon 2/98:45 amORD - EZE

2 stops34h 49mMultiple Airlines

Tue 2/1711:00 amEZE - ORD

1 stop25h 39mMultiple Airlines

Deal found 1/3

$880

Wed 2/255:45 amORD - EZE

1 stop15h 20mArajet

Fri 3/69:15 pmEZE - ORD

1 stop14h 42mArajet

Deal found 1/3

$848

Thu 2/2610:20 pmORD - EZE

1 stop14h 30mMultiple Airlines

Sun 3/18:40 amEZE - ORD

1 stop15h 30mMultiple Airlines

Deal found 1/3

$829

One-way flights from Chicago to Buenos Aires
Search for one-way flight options from Chicago to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated January 4, 2026.

Wed 2/45:45 amORD - EZE

1 stop15h 20mArajet

Deal found 1/3

$271

Sun 1/2512:17 pmORD - EZE

2 stops37h 18mMultiple Airlines

Deal found 1/2

$330

Mon 1/268:45 amORD - EZE

2 stops20h 12mMultiple Airlines

Deal found 1/2

$340

Fri 1/238:25 amORD - EZE

2 stops19h 55mMultiple Airlines

Deal found 1/3

$367

Sat 1/244:38 pmORD - EZE

3 stops56h 57mMultiple Airlines

Deal found 1/3

$370

Tue 2/177:00 amORD - EZE

3 stops56h 43mMultiple Airlines

Deal found 1/3

$372

Wed 1/285:45 amORD - EZE

1 stop15h 20mArajet

Deal found 1/3

$373

Wed 2/45:45 amORD - EZE

3 stops40h 15mMultiple Airlines

Deal found 1/3

$374

Tue 2/177:00 amORD - AEP

3 stops47h 30mMultiple Airlines

Deal found 1/3

$376

Fri 2/61:00 pmMDW - EZE

3 stops54h 34mMultiple Airlines

Deal found 1/3

$379

Mon 2/25:45 amORD - EZE

3 stops48h 30mMultiple Airlines

Deal found 1/3

$387

Thu 3/266:00 amMDW - EZE

3 stops43h 40mMultiple Airlines

Deal found 1/4

$389

Find flight deals from Chicago to Buenos Aires

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$766 (Booking.com)
One-way from	$271 (Orbitz)
Popular in	March
Cheapest in	October
Average price	$1,105

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 Chicago (CHI) to Buenos Aires (BUE)

Search Deals

One-way flight from Chicago (CHI) to Buenos Aires (BUE)

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($60 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

Use the filters below to find and compare flights from Chicago to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Wed 3/25

6:45 am-5:00 pm

2 stops32h 15m

Buenos Aires Jorge Newbery

Mon 4/6

10:55 pm-11:40 pm

2 stops26h 45m

$770

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 2/4

5:45 am-12:05 am

1 stop15h 20m

Buenos Aires Ministro Pistarini

Wed 2/11

7:30 am-8:20 pm

1 stop15h 50m

$839

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 3/11

1:37 pm-9:15 am

2 stops17h 38m

Buenos Aires Ministro Pistarini

Tue 3/17

8:55 pm-10:00 am

1 stop15h 05m

$878

ChicagoBuenos Aires

MDW - EZE

MDWEZE

Chicago Midway

Mon 3/9

12:47 pm-1:45 pm

2 stops22h 58m

Buenos Aires Ministro Pistarini

Mon 3/16

8:55 pm-9:56 am

1 stop15h 01m

$897

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 3/9

11:20 pm-3:50 pm

1 stop14h 30m

Buenos Aires Ministro Pistarini

Sun 3/15

1:40 am-9:20 pm

1 stop21h 40m

$908

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 3/11

11:20 pm-3:50 pm

1 stop14h 30m

Buenos Aires Ministro Pistarini

Tue 3/17

7:30 am-9:20 pm

1 stop15h 50m

$908

ChicagoBuenos Aires

ORD - AEP

ORDAEP

Chicago O'Hare Intl

Mon 1/26

5:15 am-7:55 am

2 stops23h 40m

Buenos Aires Jorge Newbery

Sun 2/8

8:05 pm-10:06 pm

2 stops29h 01m

$913

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Mon 3/9

5:50 pm-1:45 pm

2 stops17h 55m

Buenos Aires Ministro Pistarini

Mon 3/16

8:00 am-11:59 pm

2 stops17h 59m

$917

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Wed 1/21

7:35 am-1:04 am

1 stop14h 29m

Buenos Aires Ministro Pistarini

Wed 1/28

5:16 am-12:24 am

1 stop22h 08m

$931

ChicagoBuenos Aires

ORD - EZE

ORDEZE

Chicago O'Hare Intl

Sun 2/22

2:22 pm-7:57 am

1 stop14h 35m

Buenos Aires Ministro Pistarini

Sat 2/28

3:47 am-12:04 am

1 stop23h 17m

$931

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Showing 1-10 of 53 results

...

Compare providers for flights from Chicago to Buenos Aires

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Buenos Aires in January.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
Ovago	Price Accuracy2 stars	Trust Score*2 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
SmartFares	Price Accuracy1 star	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Chicago-Buenos Aires flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago-Buenos Aires flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago-Buenos Aires flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Chicago-Buenos Aires flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Chicago 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 Chicago to Buenos Aires

How far ahead should I book a flight from Chicago to Buenos Aires?

The best time to book flights from Chicago to Buenos Aires is 34 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, October is the cheapest month in which you can book a flight from Chicago to Buenos Aires (average of $379). Flying from Chicago 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.

How much does it cost to fly round-trip from Chicago to Buenos Aires?

Reviews of airlines servicing Buenos Aires

Peruse reviews from past customers who have flown with Delta, Copa Airlines, and United Airlines from Chicago to Buenos Aires to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

8,017 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Delta

7.9

Good

8,017 reviews

Delta

7.9

Good

8,017 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Copa Airlines

7.6

Good

1,567 reviews

Delta

7.9

Good

8,017 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,137 reviews

Delta

7.9

Good

8,017 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

American Airlines

7.2

Good

11,078 reviews

Delta

7.9

Good

8,017 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Avianca

6.6

Okay

2,497 reviews

Delta

7.9

Good

8,017 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

How long is the flight from Chicago to Buenos Aires?
For as low as $908, LATAM Airlines can have you in Buenos Aires from Chicago in 14h 30m. Airlines will cover a distance of 5619 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from Chicago to Buenos Aires round-trip?
Cheapflights users have booked flights from Chicago to Buenos Aires round-trip from $360. Other airlines that can offer you cheap pricing are Copa Airlines, from $569, and Avianca, from $726. Users have found that Arajet is 67% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Chicago to Buenos Aires one-way?
$353 is the cheapest one-way deal found within the past few days, from Avianca. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $752 and $762, respectively.
What are the most popular routes from Chicago to Buenos Aires?
The most popular route from Chicago to Buenos Aires is Chicago O'Hare Intl - Buenos Aires Ministro Pistarini. You may also consider Chicago O'Hare Intl - Buenos Aires Jorge Newbery or Chicago Midway - Buenos Aires Ministro Pistarini.
Can I find deals for flights from Chicago to Buenos Aires that include hotel bookings?
Yes. In addition to deals on Chicago to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Chicago to Buenos Aires?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Buenos Aires.
Can I find deals for business class flights from Chicago to Buenos Aires?
Yes. Cheapflights offers flight deals from Chicago 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 Chicago to Buenos Aires?
Currently, October is the cheapest month in which you can book a flight from Chicago to Buenos Aires (average of $379). Flying from Chicago 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

Top 6 airlines flying from Chicago to Buenos Aires

Airline	Cheapest	Average	Flexibility	On-time
Arajet	Cheapest$360	Average$894	FlexibilityNo cancel fee	On-timeN/A
Copa Airlines	Cheapest$699	Average$963	FlexibilityNo cancel fee	On-time70%
Avianca	Cheapest$750	Average$994	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$951	Average$1,229	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$951	Average$1,164	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$1,015	Average$1,257	FlexibilityNo cancel fee	On-time71%

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$271+ Cheap flights from Chicago (CHI) 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Chicago to Buenos Aires

Cheapest flights from Chicago to Buenos AiresExplore the most affordable flight options available from Chicago to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 4, 2026.

Explore the most affordable flight options available from Chicago to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 4, 2026.

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Best time to book a flight from Chicago to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Chicago with our price prediction graph.

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

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Use this chart to determine the optimal time to book a round-trip flight from Chicago to Buenos Aires. Price data was last updated on January 2, 2026.

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Reviews of airlines servicing Buenos Aires

Peruse reviews from past customers who have flown with Delta, Copa Airlines, and United Airlines from Chicago to Buenos Aires to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

What are the most popular routes from Chicago to Buenos Aires?

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Alternative routes for Chicago to Buenos Aires

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Top 6 airlines flying from Chicago to Buenos Aires

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Cheapest flights from Chicago to Buenos Aires
Explore the most affordable flight options available from Chicago to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 4, 2026.