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Cheap flights from Missouri to Porto Alegre from $1,069

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Porto Alegre departing on 8/9. 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 Missouri to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
GOL Logo
5:00 am - 11:45 am
STL
-
POA
28h 45m
2 stops
GOL Logo
4:40 am - 10:40 pm
POA
-
STL
20h 00m
2 stops
$1,069GOL
Sun, Aug 9 - Tue, Aug 18
GOL Logo
5:00 am - 11:35 pm
STL
-
POA
16h 35m
2 stops
GOL Logo
6:25 pm - 11:53 am
POA
-
STL
19h 28m
2 stops
$1,280GOL
Sun, Aug 9 - Tue, Aug 18
GOL Logo
8:07 pm - 3:35 pm
STL
-
POA
41h 28m
3 stops
GOL Logo
6:25 pm - 10:39 am
POA
-
STL
18h 14m
2 stops
$1,613GOL
Sun, Aug 9 - Tue, Aug 18
American Airlines Logo
12:41 pm - 10:50 am
STL
-
POA
20h 09m
3 stops
American Airlines Logo
6:25 pm - 10:39 am
POA
-
STL
18h 14m
2 stops
$2,711American Airlines
Sun, Aug 9 - Tue, Aug 18
American Airlines Logo
12:41 pm - 10:50 am
STL
-
POA
20h 09m
3 stops
American Airlines Logo
6:25 pm - 1:02 pm
POA
-
STL
20h 37m
3 stops
$3,927American Airlines
Sun, Aug 9 - Tue, Aug 18

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GOL flights from Missouri to Porto Alegre

Our best GOL deals on Missouri to Porto Alegre flight tickets
GOL
Aug 9
STL5:00 amLambert-St Louis
28h 45m
2 stops
POA11:45 amPorto Alegre Salgado Filho
Aug 18
POA4:40 amPorto Alegre Salgado Filho
20h 00m
2 stops
STL10:40 pmLambert-St Louis
$1,069
GOL
Aug 9
STL5:00 amLambert-St Louis
16h 35m
2 stops
POA11:35 pmPorto Alegre Salgado Filho
Aug 18
POA6:25 pmPorto Alegre Salgado Filho
19h 28m
2 stops
STL11:53 amLambert-St Louis
$1,280
GOL
Aug 9
STL8:07 pmLambert-St Louis
41h 28m
3 stops
POA3:35 pmPorto Alegre Salgado Filho
Aug 18
POA6:25 pmPorto Alegre Salgado Filho
18h 14m
2 stops
STL10:39 amLambert-St Louis
$1,613

American Airlines flights from Missouri to Porto Alegre

Our best American Airlines deals on Missouri to Porto Alegre flight tickets
American Airlines
Aug 9
STL12:41 pmLambert-St Louis
20h 09m
3 stops
POA10:50 amPorto Alegre Salgado Filho
Aug 18
POA6:25 pmPorto Alegre Salgado Filho
18h 14m
2 stops
STL10:39 amLambert-St Louis
$2,711
American Airlines
Aug 9
STL12:41 pmLambert-St Louis
20h 09m
3 stops
POA10:50 amPorto Alegre Salgado Filho
Aug 18
POA6:25 pmPorto Alegre Salgado Filho
20h 37m
3 stops
STL1:02 pmLambert-St Louis
$3,927

momondo Fare Finder

 
Customize your flight search to find flights from Missouri 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 2, 2026.
Use the filters below to find and compare flights from Missouri to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Sun 8/9

5:00 am-11:45 am

2 stops28h 45m

Porto Alegre Salgado Filho

Tue 8/18

4:40 am-10:40 pm

2 stops20h 00m

$1,069
Quickest round-trip

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Sun 8/9

5:00 am-11:35 pm

2 stops16h 35m

Porto Alegre Salgado Filho

Tue 8/18

6:25 pm-11:53 am

2 stops19h 28m

$1,280

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Sun 8/9

8:07 pm-3:35 pm

3 stops41h 28m

Porto Alegre Salgado Filho

Tue 8/18

6:25 pm-10:39 am

2 stops18h 14m

$1,613

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Sun 8/9

12:41 pm-10:50 am

3 stops20h 09m

Porto Alegre Salgado Filho

Tue 8/18

6:25 pm-10:39 am

2 stops18h 14m

$2,711

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Sun 8/9

12:41 pm-10:50 am

3 stops20h 09m

Porto Alegre Salgado Filho

Tue 8/18

6:25 pm-1:02 pm

3 stops20h 37m

$3,927

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Missouri to Porto Alegre flight deals and tips

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

Fastest flight time

16h 35m

Direct flights

None
The fastest flight from Missouri to Porto Alegre takes 16h 35m
There are no direct flights from Missouri to Porto Alegre. There are no popular flight routes from Missouri to Porto Alegre.
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Frequently asked questions about flying from Missouri to Porto Alegre

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

    Prices for flights from Missouri to Porto Alegre Salgado Filho Airport were last updated today.

  • How old do you have to be to fly from Missouri 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 Missouri to Porto Alegre Salgado Filho Airport.

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

    The travel and health documents required for your trip to Porto Alegre Salgado Filho Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Alegre Salgado Filho Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Missouri to Porto Alegre

  • How do I get Price Alerts for flights from Missouri to Porto Alegre?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Missouri from Porto Alegre. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Missouri to Porto Alegre with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Why use momondo?

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

Finding the right flight to Porto Alegre from Missouri is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Porto Alegre quick and easy, saving you time and money.

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

Flights from Missouri to Porto Alegre with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Missouri 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 Missouri to Porto Alegre right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Porto Alegre, momondo offers a useful price alert feature which will track prices for flights to Porto Alegre from Missouri and alert you when they change.

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