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Cheap flights from Illinois to Porto Alegre from $350

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Porto Alegre departing on 8/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
Travel Warning: Due to flooding, the airport may be currently closed. Check local travel advisories before booking.

Find the cheapest flights from Illinois to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
Copa Airlines Logo
3:20 pm - 12:20 am
ORD
-
POA
31h 00m
1 stop
Copa Airlines Logo
1:20 am - 12:57 am
POA
-
ORD
25h 37m
1 stop
$730Copa Airlines
Sat, Sep 26 - Wed, Sep 30
LATAM Airlines Logo
6:25 pm - 6:20 am
ORD
-
POA
33h 55m
2 stops
LATAM Airlines Logo
7:20 am - 11:57 pm
POA
-
ORD
18h 37m
2 stops
$742LATAM Airlines
Thu, Aug 20 - Thu, Aug 27
LATAM Airlines Logo
5:10 pm - 12:15 am
MDW
-
POA
29h 05m
2 stops
LATAM Airlines Logo
5:50 pm - 9:59 am
POA
-
MDW
18h 09m
2 stops
$742LATAM Airlines
Mon, Aug 24 - Mon, Aug 31
LATAM Airlines Logo
8:05 am - 6:15 pm
ORD
-
POA
32h 10m
2 stops
LATAM Airlines Logo
7:35 am - 11:59 pm
POA
-
ORD
18h 24m
2 stops
$743LATAM Airlines
Sun, Sep 20 - Sat, Sep 26
LATAM Airlines Logo
5:30 am - 6:20 am
ORD
-
POA
22h 50m
2 stops
LATAM Airlines Logo
12:10 pm - 12:40 pm
POA
-
ORD
26h 30m
2 stops
$744LATAM Airlines
Sun, Aug 23 - Sun, Aug 30
LATAM Airlines Logo
11:23 am - 6:20 am
ORD
-
POA
16h 57m
2 stops
LATAM Airlines Logo
12:10 pm - 5:06 pm
POA
-
ORD
30h 56m
2 stops
$745LATAM Airlines
Fri, Aug 21 - Fri, Aug 28
Copa Airlines Logo
3:21 pm - 12:15 am
ORD
-
POA
30h 54m
1 stop
Copa Airlines Logo
1:15 am - 1:02 am
POA
-
ORD
25h 47m
1 stop
$750Copa Airlines
Sun, Aug 23 - Sat, Aug 29
GOL Logo
3:20 pm - 3:35 pm
STL
-
POA
22h 15m
2 stops
GOL Logo
5:30 pm - 10:32 pm
POA
-
STL
32h 02m
2 stops
$1,278GOL
Mon, Oct 12 - Mon, Nov 23
GOL Logo
6:07 pm - 3:35 pm
STL
-
POA
19h 28m
2 stops
GOL Logo
11:20 am - 12:37 pm
POA
-
STL
28h 17m
3 stops
$1,362GOL
Mon, Oct 12 - Mon, Nov 23
American Airlines Logo
3:20 pm - 12:15 pm
STL
-
POA
18h 55m
3 stops
American Airlines Logo
7:40 pm - 1:17 pm
POA
-
STL
20h 37m
3 stops
$3,927American Airlines
Mon, Oct 12 - Mon, Nov 23

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United Airlines flights from Illinois to Porto Alegre

Our best United Airlines deals on Illinois to Porto Alegre flight tickets
United Airlines
Jul 13
ORD9:30 pmChicago O'Hare Intl
16h 50m
1 stop
POA4:20 pmPorto Alegre Salgado Filho
Sep 1
POA3:25 pmPorto Alegre Salgado Filho
29h 12m
2 stops
ORD6:37 pmChicago O'Hare Intl
$891
United Airlines
Sep 26
ORD9:45 pmChicago O'Hare Intl
38h 35m
2 stops
POA2:20 pmPorto Alegre Salgado Filho
Oct 1
POA2:05 pmPorto Alegre Salgado Filho
18h 40m
1 stop
ORD6:45 amChicago O'Hare Intl
$1,031
United Airlines
Jul 13
ORD9:30 pmChicago O'Hare Intl
14h 35m
1 stop
POA2:05 pmPorto Alegre Salgado Filho
Sep 1
POA3:25 pmPorto Alegre Salgado Filho
17h 20m
1 stop
ORD6:45 amChicago O'Hare Intl
$1,086

LATAM Airlines flights from Illinois to Porto Alegre

Our best LATAM Airlines deals on Illinois to Porto Alegre flight tickets
LATAM Airlines
Aug 20
ORD6:25 pmChicago O'Hare Intl
33h 55m
2 stops
POA6:20 amPorto Alegre Salgado Filho
Aug 27
POA7:20 amPorto Alegre Salgado Filho
18h 37m
2 stops
ORD11:57 pmChicago O'Hare Intl
$742
LATAM Airlines
Sep 20
ORD8:05 amChicago O'Hare Intl
32h 10m
2 stops
POA6:15 pmPorto Alegre Salgado Filho
Sep 26
POA7:35 amPorto Alegre Salgado Filho
18h 24m
2 stops
ORD11:59 pmChicago O'Hare Intl
$743
LATAM Airlines
Aug 23
ORD5:30 amChicago O'Hare Intl
22h 50m
2 stops
POA6:20 amPorto Alegre Salgado Filho
Aug 30
POA12:10 pmPorto Alegre Salgado Filho
26h 30m
2 stops
ORD12:40 pmChicago O'Hare Intl
$744

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Porto Alegre 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, momondo users made 832,500 searches. Data last updated July 11, 2026.
Use the filters below to find and compare flights from Illinois to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoPorto Alegre

ORD - POA

ORDPOA

Chicago O'Hare Intl

Sat 9/26

3:20 pm-12:20 am

1 stop31h 00m

Porto Alegre Salgado Filho

Wed 9/30

1:20 am-12:57 am

1 stop25h 37m

$730

ChicagoPorto Alegre

ORD - POA

ORDPOA

Chicago O'Hare Intl

Thu 8/20

6:25 pm-6:20 am

2 stops33h 55m

Porto Alegre Salgado Filho

Thu 8/27

7:20 am-11:57 pm

2 stops18h 37m

$742

ChicagoPorto Alegre

MDW - POA

MDWPOA

Chicago Midway

Mon 8/24

5:10 pm-12:15 am

2 stops29h 05m

Porto Alegre Salgado Filho

Mon 8/31

5:50 pm-9:59 am

2 stops18h 09m

$742

ChicagoPorto Alegre

ORD - POA

ORDPOA

Chicago O'Hare Intl

Sun 9/20

8:05 am-6:15 pm

2 stops32h 10m

Porto Alegre Salgado Filho

Sat 9/26

7:35 am-11:59 pm

2 stops18h 24m

$743

ChicagoPorto Alegre

ORD - POA

ORDPOA

Chicago O'Hare Intl

Sun 8/23

5:30 am-6:20 am

2 stops22h 50m

Porto Alegre Salgado Filho

Sun 8/30

12:10 pm-12:40 pm

2 stops26h 30m

$744

ChicagoPorto Alegre

ORD - POA

ORDPOA

Chicago O'Hare Intl

Fri 8/21

11:23 am-6:20 am

2 stops16h 57m

Porto Alegre Salgado Filho

Fri 8/28

12:10 pm-5:06 pm

2 stops30h 56m

$745

ChicagoPorto Alegre

ORD - POA

ORDPOA

Chicago O'Hare Intl

Sun 8/23

3:21 pm-12:15 am

1 stop30h 54m

Porto Alegre Salgado Filho

Sat 8/29

1:15 am-1:02 am

1 stop25h 47m

$750

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Mon 10/12

3:20 pm-3:35 pm

2 stops22h 15m

Porto Alegre Salgado Filho

Mon 11/23

5:30 pm-10:32 pm

2 stops32h 02m

$1,278

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Mon 10/12

6:07 pm-3:35 pm

2 stops19h 28m

Porto Alegre Salgado Filho

Mon 11/23

11:20 am-12:37 pm

3 stops28h 17m

$1,362
Quickest round-trip

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Mon 10/12

3:20 pm-12:15 pm

3 stops18h 55m

Porto Alegre Salgado Filho

Mon 11/23

7:40 pm-1:17 pm

3 stops20h 37m

$3,927

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto Alegre from

How to get the cheapest flight ticket from Illinois to Porto Alegre

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

What is the cheapest month to fly to Porto Alegre?

The cheapest month to fly to Porto Alegre from Illinois is in March. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you’re not able to fly to Porto Alegre in March, then February is your next best option. Flight prices from Illinois to Porto Alegre during February average around $0.

Can stopping save me money on Illinois to Porto Alegre flights?

You could potentially save up to 6% on your flight if you consider stops on a Illinois to Porto Alegre flight.

Cheap Illinois to Porto Alegre flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Porto Alegre

Fastest flight time

22h 15m

Direct flights

None
The fastest flight from Illinois to Porto Alegre takes 22h 15m
There are no direct flights from Illinois to Porto Alegre. There are no popular flight routes from Illinois to Porto Alegre.
Search flight deals

Frequently asked questions about flying from Illinois to Porto Alegre

  • When did momondo last update prices for flights from Illinois to Porto Alegre Salgado Filho Airport?

    Prices for flights from Illinois to Porto Alegre Salgado Filho Airport refresh daily.

  • How old do you have to be to fly from Illinois to Porto Alegre Salgado Filho Airport?

    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 Illinois to Porto Alegre Salgado Filho Airport.

  • What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?

    The required travel and health documents for your Porto Alegre Salgado Filho Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Alegre Salgado Filho Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Porto Alegre?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Porto Alegre for you.

Can I find flights from Illinois to Porto Alegre with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Porto Alegre flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Porto Alegre?

momondo helps you find the best flight between Illinois and Porto Alegre by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Illinois to Porto Alegre right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Illinois to Porto Alegre flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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