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Cheap flights from Missouri to Porto Alegre from $1,106

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 3/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Air Canada Logo
4:05 pm - 4:20 pmSTL-POA
21h 15m2 stops
Air Canada Logo
3:30 pm - 3:29 pmPOA-STL
26h 59m2 stops
$1,106Air Canada
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lun., mar. 2 - mié., mar. 4

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 noviembre 10, 2025.
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

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

lun. 3/2

4:05 pm-4:20 pm

2 stops21h 15m

Porto Alegre Salgado Filho

mié. 3/4

3:30 pm-3:29 pm

2 stops26h 59m

$1,106

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Missouri 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 day to depart on your flight to Porto Alegre?

Our data shows that Thursday is the least expensive day to fly to Porto Alegre. Tickets to fly out on this day can be as low as $1,120. On the other hand, Wednesday is the most expensive day to depart from Missouri because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,299.

What is the cheapest time of day to depart on your flight to Porto Alegre?

Our most recent data shows that the best time of day to fly to Porto Alegre is in the afternoon. Flights from Missouri to Porto Alegre during this time can be as low as $1,130. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,299 on average. Flights to Porto Alegre from Missouri in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Direct flights

None
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
7.5
1,872 reviews
Search LATAM Airlines flights

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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1 adult
mié. 12/10
mié. 12/17
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