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Cheap flights from Missouri to Porto Alegre from $459

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Porto Alegre departing on 5/15. 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
0 bags

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Find the cheapest flights from Missouri to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:05 pm - 6:50 pm
STL
-
POA
27h 45m
2 stops
Multiple Airlines Logo
8:55 pm - 8:25 pm
POA
-
STL
49h 30m
2 stops
$1,146Multiple Airlines
Tue, May 12 - Tue, May 19
GOL Logo
11:06 am - 11:45 am
STL
-
POA
22h 39m
2 stops
GOL Logo
5:20 pm - 10:58 pm
POA
-
STL
31h 38m
2 stops
$1,154GOL
Wed, May 13 - Wed, May 20
Multiple Airlines Logo
7:05 am - 2:20 pm
STL
-
POA
29h 15m
2 stops
Multiple Airlines Logo
11:20 am - 12:06 pm
POA
-
STL
26h 46m
3 stops
$1,282Multiple Airlines
Tue, May 12 - Tue, May 19
Multiple Airlines Logo
11:06 am - 12:15 pm
STL
-
POA
23h 09m
2 stops
Multiple Airlines Logo
5:10 am - 10:24 pm
POA
-
STL
19h 14m
2 stops
$1,382Multiple Airlines
Sun, May 10 - Sun, May 17
Multiple Airlines Logo
7:05 am - 4:20 pm
STL
-
POA
31h 15m
3 stops
Multiple Airlines Logo
5:50 pm - 12:06 pm
POA
-
STL
20h 16m
2 stops
$1,480Multiple Airlines
Sun, May 10 - Sun, May 17
Multiple Airlines Logo
2:15 pm - 3:15 pm
STL
-
POA
23h 00m
3 stops
Multiple Airlines Logo
1:35 pm - 8:25 pm
POA
-
STL
32h 50m
2 stops
$1,576Multiple Airlines
Wed, May 13 - Wed, May 20

GOL flights from Missouri to Porto Alegre

Our best GOL deals on Missouri to Porto Alegre flight tickets
GOL
Aug 29
STL11:48 amLambert-St Louis
33h 47m
2 stops
POA11:35 pmPorto Alegre Salgado Filho
Sep 8
POA5:20 amPorto Alegre Salgado Filho
20h 39m
2 stops
STL11:59 pmLambert-St Louis
$991
GOL
Aug 29
STL11:48 amLambert-St Louis
33h 47m
2 stops
POA11:35 pmPorto Alegre Salgado Filho
Sep 10
POA5:20 amPorto Alegre Salgado Filho
19h 52m
2 stops
STL11:12 pmLambert-St Louis
$1,010
GOL
May 13
STL11:06 amLambert-St Louis
22h 39m
2 stops
POA11:45 amPorto Alegre Salgado Filho
May 20
POA5:20 pmPorto Alegre Salgado Filho
31h 38m
2 stops
STL10:58 pmLambert-St Louis
$1,154

Air Canada flights from Missouri to Porto Alegre

Our best Air Canada deals on Missouri to Porto Alegre flight tickets
Air Canada
Sep 1
STL12:10 pmLambert-St Louis
25h 25m
2 stops
POA3:35 pmPorto Alegre Salgado Filho
Sep 9
POA5:10 pmPorto Alegre Salgado Filho
27h 31m
2 stops
STL6:41 pmLambert-St Louis
$1,005
Air Canada
Sep 1
STL8:55 amLambert-St Louis
29h 25m
2 stops
POA4:20 pmPorto Alegre Salgado Filho
Sep 11
POA3:25 pmPorto Alegre Salgado Filho
30h 35m
2 stops
STL8:00 pmLambert-St Louis
$1,083
Air Canada
Sep 1
STL12:10 pmLambert-St Louis
26h 10m
2 stops
POA4:20 pmPorto Alegre Salgado Filho
Sep 7
POA2:00 pmPorto Alegre Salgado Filho
26h 00m
2 stops
STL2:00 pmLambert-St Louis
$1,197

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 March 30, 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

Tue 5/12

1:05 pm-6:50 pm

2 stops27h 45m

Porto Alegre Salgado Filho

Tue 5/19

8:55 pm-8:25 pm

2 stops49h 30m

$1,146

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Wed 5/13

11:06 am-11:45 am

2 stops22h 39m

Porto Alegre Salgado Filho

Wed 5/20

5:20 pm-10:58 pm

2 stops31h 38m

$1,154

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Tue 5/12

7:05 am-2:20 pm

2 stops29h 15m

Porto Alegre Salgado Filho

Tue 5/19

11:20 am-12:06 pm

3 stops26h 46m

$1,282
Quickest round-trip

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Sun 5/10

11:06 am-12:15 pm

2 stops23h 09m

Porto Alegre Salgado Filho

Sun 5/17

5:10 am-10:24 pm

2 stops19h 14m

$1,382

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Sun 5/10

7:05 am-4:20 pm

3 stops31h 15m

Porto Alegre Salgado Filho

Sun 5/17

5:50 pm-12:06 pm

2 stops20h 16m

$1,480

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Wed 5/13

2:15 pm-3:15 pm

3 stops23h 00m

Porto Alegre Salgado Filho

Wed 5/20

1:35 pm-8:25 pm

2 stops32h 50m

$1,576
Cheapest one-way
Quickest one-way

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Fri 5/15

5:27 pm-12:20 am

3 stops52h 53m

$459

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

Fri 5/15

5:27 pm-12:20 am

2 stops52h 53m

$515

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

27h 45m

Direct flights

None
The fastest flight from Missouri to Porto Alegre takes 27h 45m
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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  • 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 many operators does momondo search for flights from Missouri to Porto Alegre Salgado Filho Airport?

  • 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.

Best airlines flying from Missouri to Porto Alegre

Compare and see reviews for airlines that fly from Missouri to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
LATAM AirlinesPriceFrom $1,167Free CancellationRating
7.4
1,902 reviews
Search LATAM Airlines flights

  • 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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