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STL - POA

$1,103 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 8/22. 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
0 bags
ma. 5/27
ma. 6/3

Search 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
In the last 7 days travelers have searched 44,335,567 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
11:51 am - 7:20 pmSTL-POA
29h 29m2 stops
7:20 am - 10:47 amPOA-STL
29h 27m2 stops
$1,103LATAM Airlines
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to., aug. 22 - ma., aug. 26
2:05 pm - 2:30 pmSTL-POA
22h 25m2 stops
6:05 am - 11:39 pmPOA-STL
19h 34m2 stops
$1,114Delta
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to., aug. 22 - ma., aug. 26
7:10 am - 6:20 amSTL-POA
21h 10m2 stops
6:05 am - 11:39 pmPOA-STL
19h 34m2 stops
$1,332Delta
Find Deal
fr., mai 10 - sø., sep. 1
5:19 am - 10:30 amSTL-POA
27h 11m2 stops
1:30 pm - 12:03 pmPOA-STL
24h 33m3 stops
$1,568American Airlines
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fr., mai 10 - sø., sep. 1
8:25 am - 12:17 amSTL-POA
37h 52m2 stops
1:26 am - 7:29 pmPOA-STL
20h 03m2 stops
$1,598Copa Airlines
Find Deal
to., aug. 22 - sø., aug. 25
7:30 am - 10:30 amSTL-POA
25h 00m3 stops
1:30 pm - 11:50 amPOA-STL
24h 20m3 stops
$1,684American Airlines
Find Deal
fr., mai 10 - sø., sep. 1
11:10 am - 12:19 amSTL-POA
35h 09m2 stops
1:30 am - 7:47 pmPOA-STL
20h 17m2 stops
$1,709Copa Airlines
Find Deal
fr., mai 10 - lø., aug. 31
8:25 am - 12:17 amSTL-POA
37h 52m2 stops
1:26 am - 9:56 amPOA-STL
34h 30m2 stops
$2,647Copa Airlines
Find Deal
to., aug. 22 - sø., aug. 25

Good to know

Cheapest flight

$1,103
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 $1,103 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.

  • Which airline alliances offer flights from St. Louis to Porto Alegre?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between St. Louis and Porto Alegre, with SkyTeam being the most commonly used for this 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.

See more FAQs

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 2487 reviews
7.1entertainment
8.1crew
7.6boarding
6.8food
7.4comfort
Airline reviews

Everything was as you would expect in coach - fine. Flight was close to on time.

10.0 ExcellentLisa & Conrad, Mar 2024MIA - BOS
Read more about LATAM Airlines reviews

Everything was as you would expect in coach - fine. Flight was close to on time.

No air in the middle rows. Had a hard time breathing. Was dying of heat.

Horrific checkin procedure with neither Delta nor Latam figuring out how to check me in. 4 hrs on customer support with both and both airlines pointing to each other who should do checking. I was not checked in until morning of flight, which for international flight is concerning.

It was a good experience, the flight was a little too long & the food was ok

the flight from Boston to Curitiba was on time actually 30 minutes earlier. latam was not able to unload the luggage for custom checkup in Sao Paulo ii took two and half hours . i missed the flight to Curitiba spend the night in hotel and then flying in the morning to Curitiba

Tough flight with turbulence… I was told by a fellow passenger that it is common. Nonetheless, very stressful. Cordial staff.

Very unprofessional staff in the checking and boarding. There was no space for my carry-on bag, which is understandable for a full flight. However, the rudeness in answering my questions about my bag were unnecessary. Shaming and threatening a passenger to be left behind was something I had never experienced (I am 57 years old and a Skymiles member) before. At a minimum, the boarding staff (Krystal Mejia and her manager Dee) should undergo further training on cultural sensitivity and professional skills on speaking with passengers. Krystal, just because I have dark hair and “look Latina” does not mean I can speak Spanish. Your assumption and threatening words until the very ending of my boarding (door of the airplane) were not only unnecessary and stressful but something that a passenger should not experience before boarding.

The flight was overbooked and the solution gave was unrespctful. I arrived 4 hour in advance in the airport and only after 2hous was possible suggest a different ticket with another company LATAM, I have accepted, but when I was checking in at LATAM the tickets was issued without luggage, what it is absurd since I have bought my tickets including it since the beginning. Due to the timing for the next flight was not possible return to Avianca to claim due to the distance between Both companies Avianca and Latam since were located in different terminals. I have insiste to the crew of Latam to call Avianca to solve it, but they could help they were alleging that only paying a thousand pesos Mexicans ($1,000 MXN) to dispatch my luggage would be accepted and I have no money at all. So I had to beg for others passagens, it was an humiliating to exchange luggage with who was platinum in order to return back the luggage in the connection airport in Brazil (GRU). I have no clue that a judicial process would be taken from my side due the lots of stress in sequence by the non professional treatment with a passenger that was just following everything said by Avianca.. Long hours of waiting until next flight and only arrive at final destine in 6hs later..

The flight from PDX to New York was cancelled, and I got rebooked one day later. Because of this I missed a meeting at my final destination, EZE. I now need to stay longer in Argentina, and was told the tariff difference was $780 plus $150 penalty! I am not using my return ticket, and have purchased a one way ticket EZE-PDX for $606 with another airline. SHAMEFUL

Cons: "The flight was full and all seats were taken. It means it was impossible to maintain the required and necessary social distancing."

St. Louis - Porto Alegre Flights

Departure:

St. Louis (STL)United States

Destination:

Porto Alegre (POA)Brazil

Cabin classes: