STL - POA

$948 Find Cheap Flights from St. Louis to Porto Alegre

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Porto Alegre departing on 11/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto Alegre

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Porto Alegre, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Porto Alegre, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$948
Multiple Airlines
Wed 11/26Wed 12/3
STL - POA • 2 stops
Cheapest one-way
Multiple Airlines
Thu 10/30
STL - POA • multi-stop
Top airlines
GOL
Cheapest • from $996 (round-trip)
LATAM Airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Porto Alegre!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Porto Alegre (STL-POA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Porto Alegre that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Porto Alegre

Wed, Nov 26 - Wed, Dec 3
Multiple Airlines Logo
10:24 am - 11:30 amSTL-POA
22h 06m2 stops
Multiple Airlines Logo
5:10 am - 10:33 pmPOA-STL
20h 23m2 stops
$948Multiple Airlines
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Wed, Mar 25 - Wed, Apr 1
GOL Logo
11:30 am - 11:30 amSTL-POA
22h 00m2 stops
GOL Logo
5:10 am - 10:04 pmPOA-STL
18h 54m2 stops
$996GOL
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Mon, Mar 2 - Wed, Mar 4
Air Canada Logo
4:05 pm - 2:35 pmSTL-POA
19h 30m2 stops
Air Canada Logo
3:25 pm - 3:29 pmPOA-STL
27h 04m2 stops
$1,106Air Canada
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Wed, Nov 26 - Tue, Dec 2
LATAM Airlines Logo
6:00 am - 6:30 amSTL-POA
21h 30m2 stops
LATAM Airlines Logo
4:40 am - 10:45 amPOA-STL
33h 05m2 stops
$1,332LATAM Airlines
Find Deal
Wed, Nov 26 - Wed, Dec 3
Multiple Airlines Logo
10:24 am - 12:10 amSTL-POA
34h 46m3 stops
Multiple Airlines Logo
5:45 am - 10:33 pmPOA-STL
19h 48m2 stops
$1,349Multiple Airlines
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Wed, Nov 12 - Sat, Nov 22
American Airlines Logo
4:41 pm - 5:10 pmSTL-POA
21h 29m2 stops
American Airlines Logo
5:35 pm - 10:37 amPOA-STL
20h 02m2 stops
$1,461American Airlines
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Wed, Nov 12 - Sat, Nov 22
LATAM Airlines Logo
5:17 pm - 12:40 amSTL-POA
28h 23m3 stops
LATAM Airlines Logo
7:45 am - 9:58 pmPOA-STL
17h 13m2 stops
$1,481LATAM Airlines
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Wed, Mar 25 - Wed, Apr 1
American Airlines Logo
12:01 pm - 1:00 pmSTL-POA
22h 59m2 stops
American Airlines Logo
7:35 pm - 12:06 pmPOA-STL
18h 31m3 stops
$2,573American Airlines
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Wed, Nov 26 - Wed, Dec 3
American Airlines Logo
11:42 am - 9:55 amSTL-POA
19h 13m3 stops
American Airlines Logo
7:30 pm - 1:18 pmPOA-STL
20h 48m3 stops
$3,924American Airlines
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Wed, Mar 25 - Tue, Mar 31
Copa Airlines Logo
12:15 pm - 12:25 amSTL-POA
34h 10m2 stops
Copa Airlines Logo
1:45 am - 6:33 pmPOA-STL
18h 48m2 stops
$6,227Copa Airlines
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Booking Insights

KAYAK's insights & trends for St. Louis to Porto Alegre flights

Get data-powered insights and trends into flights from St. Louis to Porto Alegre to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from St. Louis to Porto Alegre?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from St. Louis to Porto Alegre were found on GOL ($996) and Air Canada ($1,106).

Which airlines fly non-stop between St. Louis and Porto Alegre?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from St. Louis to Porto Alegre.

There is just one airline that flies from St. Louis to Porto Alegre direct and that is LATAM Airlines. The best round-trip deal found from LATAM Airlines for the route is $1,167.

Find deals

Good to know

Cheapest flight$948
Flight from St. Louis to Porto Alegre

When to book flights from St. Louis to Porto Alegre

Are your dates flexible? Find out the best times to travel from St. Louis to Porto Alegre based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Porto Alegre

  • What is the cheapest flight from St. Louis to Porto Alegre?

    In the last 3 days, the lowest price for a flight from St. Louis to Porto Alegre was $948 for a round-trip ticket.

  • Do I need a passport to fly between St. Louis and Porto Alegre?

    Yes, you'll most likely have to show a valid passport before boarding the plane in St. Louis and on arrival in Porto Alegre.

  • Which airports will I be using when flying from St. Louis to Porto Alegre?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Porto Alegre, also known as Porto Alegre Salgado Filho.

  • Which aircraft models fly most regularly from St. Louis to Porto Alegre?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from St. Louis to Porto Alegre?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Porto Alegre.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Porto Alegre?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto Alegre from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Porto Alegre?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto Alegre with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and POA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Porto Alegre?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto Alegre from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from St. Louis to Porto Alegre

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Porto Alegre. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Porto Alegre? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
LATAM AirlinesOverall score based on 1871 reviews
7.3Comfort
7.5Boarding
6.7Food
7.0Entertainment
8.0Crew
Airline reviews

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

2.0 MediocreBenjamin, Oct 2025MIA - LIM
Read more LATAM Airlines reviews

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

Poor, the airline was not able to help me move flights.

The way the Pilot made all announcements, specially the way he congratulated the entire crew as the best team ever, making a comment that due to them they were able to shorter the delay to the destination. Amazing flight .

Just to drop my already labeled bag it took 50 minutes inline. Completely disappointed with Latam operation at GRU

I’m entitled to a refund per LATAM due to the mid flight itinerary change and being stuck in São Paulo for 24 hours and needing to get a hotel. The airline was dismissive and of no help.

The flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

Boarding was confusing with a delayed flight because there was no English translation

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

Bought a ticket that included a bag and they still charged me to check it in, latam is the worst airline.

Everything you need to know for your flight from St. Louis to Porto Alegre

Information on your arrival and departure airports

St. Louis (STL)
Porto Alegre (POA)

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