Best time to go: what is the RIGHT price for a round-trip flight to Buenos Aires (from: Chicago)

The average price to go to Buenos Aires from Chicago airport is $ 1037 (round trip). However, there are variations depending on the departure month. Thus, it is possible to pay for your plane ticket on average between $ 914 (in september) and $ 1224 (in december), which is a saving of $ 124 or a surplus of $ 187 (compared to the average price) depending on the period you leave.

The analysis of all prices reveals that the most frequent price is between $949 to $1001 and it is generally more economical to leave on a tuesday and return on a tuesday on a flight with 1 or more layovers.

Be careful, the cheapest months may correspond to unfavorable weather periods . Check out our page best time to go to Buenos Aires before booking your flight.

If you want to know when to book your flight at the best price, go straight to the second part of this page: When to buy your Chicago-Buenos Aires plane ticket.

How are these data calculated?

We have studied a sample of 30181 airfare prices from previous years for flights to Buenos Aires from Chicago and can thus establish precise and credible price variation trends based on different parameters. Of course, prices can vary from year to year, but the seasonal aspect of this data (recurrence of school holidays, events... from year to year) makes these statistics quite reliable.

Average price depending on the departure month

Data analysis:

By leaving in september, the price of the plane ticket will statistically be the cheapest ($ 914, saving $ 124 compared to the average price over the year which is $ 1037). Conversely, december will be the most expensive ($ 1224).

Flight Chicago-Buenos Aires: when is the best time to go for the best price?

Month Good price* Average price Our opinion
January$ 966 $ 1083 fair price
February$ 949 $ 1024 fair price
March$ 934 $ 1050 fair price
April$ 871 $ 1086 fair price
May$ 842 $ 1017 fair price
June$ 889 $ 1044 fair price
July$ 966 $ 1095 fair price
August$ 844 $ 932 good price
September$ 796 $ 914 very good price
October$ 837 $ 956 good price
November$ 906 $ 1013 fair price
December$ 1043 $ 1224 very high price

*great price to buy your plane ticket: if you see this price or cheaper during your flight search, go for it and buy it!

Price breakdown to travel from Chicago to Buenos Aires

Data analysis:

The prices for flights from Chicago to Buenos Aires range from $632 to $1528. 1% of tickets were purchased at the minimum price (from $633 to $685), 1% at the maximum price (from $1476 to $1528). The majority of plane tickets were purchased in the range of $949 to $1001 (15% of tickets).

Cheapest airlines for the Chicago->Buenos Aires flight

There are 14 companies that serve Chicago from Buenos Aires airport: Spirit Airlines, Copa, latam airlines group, Frontier Airlines, Aeromexico (aerm), United, Delta, Air Canada, American Airlines, Aerolineas Argentinas, Avianca (scheduled), Avianca Brazil, jetBlue and Volaris.

Data analysis:

Of the 30181 flights analyzed in previous years, Spirit Airlines was the airline that offered the best fare most often in the flight ticket search results (30% of the time) on the Chicago->Buenos Aires route.

Which day of the week to leave?

Data analysis:

Statistically, Chicago-Buenos Aires flights departing on a tuesday are cheaper than on other days of the week. By choosing a tuesday as your departure date, you can save an average of $52. On the other hand, departing on a saturday may cost you an additional $34.

Which day of the week to come back?

Data analysis:

Statistically, return flights from Buenos Aires to Chicago departing on a tuesday are cheaper than on other days of the week. By choosing a tuesday for your return date, you will save an average of $44. Conversely, departing from Buenos Aires on a saturday may cost you an additional $49.


Top prices Chicago-Buenos Aires

Round tripDatesPrice
Chicago → Buenos Aires13-02 to 18-02-2025$ 762 
Chicago → Buenos Aires20-02 to 26-02-2025$ 797 
Chicago → Buenos Aires05-03 to 12-03-2025$ 762 
Chicago → Buenos Aires10-03 to 19-03-2025$ 740 
Chicago → Buenos Aires11-03 to 18-03-2025$ 762 
Chicago → Buenos Aires12-03 to 19-03-2025$ 762 
Chicago → Buenos Aires13-03 to 20-03-2025$ 794 
Chicago → Buenos Aires17-03 to 24-03-2025$ 746 
Chicago → Buenos Aires19-03 to 23-03-2025$ 789 
Chicago → Buenos Aires22-05 to 27-05-2025$ 788 


When to book your flight Chicago - Buenos Aires to get the cheapest price?

Statistically, you will make the biggest savings by buying your plane ticket between 1 to 2 months in advance. However, you may end up paying a high price if you book between 11 to 12 months in advance.

Did you know: the price of plane tickets not only varies depending on how far in advance you book, but also on the day of the week you book! So, to maximize your chances of getting the best price for a Chicago-Buenos Aires flight, it is recommended to book your ticket on a sunday.

How far in advance should I buy my flight?

Data analysis:

To get the cheapest flight ticket from Chicago to Buenos Aires, it is recommended to buy it 1 to 2 months before departure (it is then on average 984 $, which is a saving of 53 $ compared to the overall average price). On the other hand, if you buy your ticket 11 to 12 months in advance, you will pay the full price (577 $ more than the average price).

Depending on the departure month

The best time to buy your Chicago to Buenos Aires flight ticket may vary depending on your departure month. Therefore, we offer you statistics on when to book your flight month by month.

Departure on... How far in advance should I book?
January

Best time: 1 to 2 months before departure (average price: 998 $)

Other interesting period(s): 0 to 1 month ($ 1038), 5 to 6 months ($ 1079), 7 to 8 months ($ 1041), 8 to 9 months ($ 1077)

February

Best time: 1 to 2 months before departure (average price: 931 $)

Other interesting period(s): 2 to 3 months ($ 985), 9 to 10 months ($ 995)

March

Best time: 1 to 2 months before departure (average price: 961 $)

Other interesting period(s): 2 to 3 months ($ 979), 3 to 4 months ($ 1025), 6 to 7 months ($ 1005), 7 to 8 months ($ 970), 8 to 9 months ($ 973), 9 to 10 months ($ 992)

April

Best time: 2 to 3 months before departure (average price: 909 $)

Other interesting period(s): 1 to 2 months ($ 1034), 3 to 4 months ($ 975), 4 to 5 months ($ 1056), 6 to 7 months ($ 1083)

May

Best time: 3 to 4 months before departure (average price: 896 $)

Other interesting period(s): 0 to 1 month ($ 942), 4 to 5 months ($ 941), 5 to 6 months ($ 971)

June

Best time: 1 to 2 months before departure (average price: 919 $)

Other interesting period(s): 0 to 1 month ($ 1006), 4 to 5 months ($ 1018)

July

Best time: 1 to 2 months before departure (average price: 996 $)

Other interesting period(s): 2 to 3 months ($ 1069), 5 to 6 months ($ 1069)

August

Best time: 1 to 2 months before departure (average price: 874 $)

Other interesting period(s): 2 to 3 months ($ 887), 3 to 4 months ($ 898)

September

Best time: 1 to 2 months before departure (average price: 840 $)

Other interesting period(s): 2 to 3 months ($ 862), 3 to 4 months ($ 862), 4 to 5 months ($ 869)

October

Best time: 2 to 3 months before departure (average price: 850 $)

Other interesting period(s): 1 to 2 months ($ 853), 3 to 4 months ($ 923), 4 to 5 months ($ 903), 5 to 6 months ($ 928)

November

Best time: 2 to 3 months before departure (average price: 916 $)

Other interesting period(s): 1 to 2 months ($ 968), 3 to 4 months ($ 929), 5 to 6 months ($ 977)

December

Best time: 0 to 1 month before departure (average price: 1138 $)

Other interesting period(s): 3 to 4 months ($ 1202), 7 to 8 months ($ 1217), 8 to 9 months ($ 1168)

What day of the week should I book my flight ticket?

Data analysis:

Statistically, sunday is the day when plane tickets for Chicago->Buenos Aires are the cheapest. So, by buying your plane ticket on a sunday, you will save $8. Conversely, by buying it on a monday, you may end up paying $9 more.



Chicago to Buenos Aires: flight price when booking today

Information: this data is not statistics but comes from real prices collected less than 7 days ago. Some months may not be available as we do not have enough data for them.

Month Current price
November 2024$ 1270
$1118 to $1399
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December 2024$ 1162
$817 to $1706
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January 2025$ 1109
$854 to $1619
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February 2025$ 879
$759 to $1104
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March 2025$ 843
$740 to $1063
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April 2025$ 1009
$868 to $1105
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May 2025$ 905
$788 to $1038
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June 2025$ 1009
$1004 to $1013
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July 2025$ 1051
$1009 to $1092
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August 2025$ 1065
$1060 to $1069
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September 2025$ 1004
$1003 to $1004
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October 2025$ 1069
$1069 to $1069
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Data analysis:

Compared to the average price, december, february, march, april, may, june and july are cheaper to travel to Buenos Aires. So it may be interesting to book now to leave during these months!



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