Statistics on Chicago-Porto Alegre flights: what is the right price and when to buy your plane ticket?
Best time to go: what is the RIGHT price for a round-trip flight to Porto Alegre (from: Chicago)
The average price to go to Porto Alegre from Chicago airport is $ 1048 (round trip). However, there are variations depending on the departure month. Thus, it is possible to pay for your plane ticket on average between $ 877 (in april) and $ 1326 (in december), which is a saving of $ 171 or a surplus of $ 278 (compared to the average price) depending on the period you leave.
The analysis of all prices reveals that the most frequent price is between $822 to $877 and it is generally more economical to leave on a tuesday and return on a tuesday on a flight with 1 or more layovers.
Be careful, the cheapest months may correspond to unfavorable weather periods . Check out our page best time to go to Porto Alegre before booking your flight.
If you want to know when to book your flight at the best price, go straight to the second part of this page: When to buy your Chicago-Porto Alegre plane ticket.
How are these data calculated?
We have studied a sample of 1910 airfare prices from previous years for flights to Porto Alegre from Chicago and can thus establish precise and credible price variation trends based on different parameters. Of course, prices can vary from year to year, but the seasonal aspect of this data (recurrence of school holidays, events... from year to year) makes these statistics quite reliable.
Average price depending on the departure month
Data analysis:
By leaving in april, the price of the plane ticket will statistically be the cheapest ($ 877, saving $ 171 compared to the average price over the year which is $ 1048). Conversely, december will be the most expensive ($ 1326).
Flight Chicago-Porto Alegre: when is the best time to go for the best price?
| Month | Good price* | Average price | Our opinion |
|---|---|---|---|
| January | $ 981 | $ 1168 | fair price |
| February | $ 852 | $ 1243 | high price |
| March | $ 858 | $ 957 | good price |
| April | $ 773 | $ 877 the cheapest | very good price |
| May | $ 783 | $ 939 | good price |
| June | $ 913 | $ 1092 | fair price |
| July | $ 933 | $ 1139 | fair price |
| August | $ 861 | $ 1023 | fair price |
| September | $ 763 | $ 928 | good price |
| October | $ 799 | $ 922 | good price |
| November | $ 837 | $ 955 | good price |
| December | $ 1037 | $ 1326 the most expensive | 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 Porto Alegre
Data analysis:
The prices for flights from Chicago to Porto Alegre range from $603 to $1535. 2% of tickets were purchased at the minimum price (from $603 to $658), 2% at the maximum price (from $1480 to $1535). The majority of plane tickets were purchased in the range of $822 to $877 (12% of tickets).
Cheapest airlines for the Chicago->Porto Alegre flight
There are 7 companies that serve Chicago from Porto Alegre airport: Spirit Airlines, Frontier Airlines, Copa, United, latam airlines group, Avianca (scheduled) and Allegiant Air.
Data analysis:
Of the 1910 flights analyzed in previous years, Spirit Airlines was the airline that offered the best fare most often in the flight ticket search results (48% of the time) on the Chicago->Porto Alegre route.
Which day of the week to leave?
Data analysis:
Statistically, Chicago-Porto Alegre 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 $151. On the other hand, departing on a thursday may cost you an additional $167.
Which day of the week to come back?
Data analysis:
Statistically, return flights from Porto Alegre 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 $141. Conversely, departing from Porto Alegre on a saturday may cost you an additional $239.
Top prices Chicago-Porto Alegre
| Round trip | Dates | Price | |
|---|---|---|---|
| Chicago → Porto Alegre | 05-05 to 19-05-2025 | $ 678 | layover flight with Avianca (scheduled) |
| Chicago → Porto Alegre | 08-05 to 15-05-2025 | $ 681 | layover flight with Spirit Airlines |
| Chicago → Porto Alegre | 15-05 to 22-05-2025 | $ 691 | layover flight with Frontier Airlines |
| Chicago → Porto Alegre | 16-05 to 23-05-2025 | $ 896 | layover flight with Copa |
| Chicago → Porto Alegre | 17-05 to 24-05-2025 | $ 1110 | layover flight with Delta |
| Chicago → Porto Alegre | 18-05 to 25-05-2025 | $ 708 | layover flight with Avianca (scheduled) |
| Chicago → Porto Alegre | 19-05 to 26-05-2025 | $ 989 | layover flight with Delta |
| Chicago → Porto Alegre | 20-05 to 27-05-2025 | $ 702 | layover flight with Spirit Airlines |
| Chicago → Porto Alegre | 12-07 to 19-07-2025 | $ 884 | layover flight with Spirit Airlines |
| Chicago → Porto Alegre | 06-02 to 19-02-2026 | $ 1034 | layover flight with Delta |
When to book your flight Chicago - Porto Alegre 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 4 to 5 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-Porto Alegre 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 Porto Alegre, it is recommended to buy it 1 to 2 months before departure (it is then on average 955 $, which is a saving of 93 $ compared to the overall average price). On the other hand, if you buy your ticket 4 to 5 months in advance, you will pay the full price (246 $ more than the average price).
Depending on the departure month
The best time to buy your Chicago to Porto Alegre 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: 1115 $) |
| February | Best time: 1 to 2 months before departure (average price: 1110 $) |
| March | Best time: 1 to 2 months before departure (average price: 875 $) Other interesting period(s): 2 to 3 months ($ 945) |
| April | Best time: 1 to 2 months before departure (average price: 779 $) |
| May | Best time: 1 to 2 months before departure (average price: 859 $) |
| June | - |
| July | - |
| August | - |
| September | - |
| October | Best time: 1 to 2 months before departure (average price: 897 $) |
| November | Best time: 1 to 2 months before departure (average price: 889 $) |
| December | Best time: 1 to 2 months before departure (average price: 1109 $) |
What day of the week should I book my flight ticket?
Data analysis:
Statistically, sunday is the day when plane tickets for Chicago->Porto Alegre are the cheapest. So, by buying your plane ticket on a sunday, you will save $35. Conversely, by buying it on a wednesday, you may end up paying $29 more.
Chicago to Porto Alegre: 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 | Our opinion | |
|---|---|---|---|
| May 2025 | $ 781 $678 to $1110 | very good price | Find a flight |
| July 2025 | $ 884 $884 to $884 | very good price | Find a flight |
| February 2026 | $ 1034 $1034 to $1034 | very good price | Find a flight |
Data analysis:
Compared to the average price, may, july and february are cheaper to travel to Porto Alegre. So it may be interesting to book now to leave during these months!