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Porto Alegre

$1,281+ Cheap flights from Missouri to Porto Alegre (POA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — POA
ene. 16 — ene. 231
vie. 1/16
vie. 1/23
1 adult, Economy
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Cheap flight deals from Missouri to Porto Alegre

Best flights from Missouri to Porto Alegre
Discover carefully curated flight deals from Missouri to Porto Alegre that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 17, 2025.

This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/83:23 pmSTL - POA
2 stops22h 57mUnited Airlines
mié. 3/115:10 pmPOA - STL
2 stops19h 17mUnited Airlines
Deal found 12/14$1,281

Find flight deals from Missouri to Porto Alegre

Keep the following information in mind while searching for Missouri to Porto Alegre flight deals. Data was last updated diciembre 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,281
(United Airlines)
Provider with most accurate pricing for Lambert-St Louis-Porto Alegre Salgado Filho flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Porto Alegre Salgado Filho flights.
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From Missouri to Porto Alegre Salgado Filho
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Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated diciembre 17, 2025.
Use the filters below to find and compare flights from Missouri to Porto Alegre that are best for you.

Fly from

Missouri

Fly to

Porto Alegre

Route

Depart

Return

Price

St. LouisPorto Alegre

STL - POA

STLPOA

Lambert-St Louis

dom. 3/8

3:23 pm-4:20 pm

2 stops22h 57m

Porto Alegre Salgado Filho

mié. 3/11

5:10 pm-10:27 am

2 stops19h 17m

$1,281

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Best time to book a flight from Missouri to Porto Alegre

Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from Missouri with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Porto Alegre
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Related info for your journey

Find useful and relevant information for your journey from Missouri to Porto Alegre. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Porto Alegre from Missouri?

    Most people fly into Porto Alegre Salgado Filho (POA) if they book a flight to Porto Alegre from Missouri. Salgado Filho is conveniently located just 4.0 mi from Porto Alegre’s city center.

  • How long is the flight from Missouri to Porto Alegre?

    For as low as $1,281, United Airlines can have you in Porto Alegre from Missouri in 22h 57m. Missouri and Porto Alegre are separated by a distance of 5375 mi.

  • Can I find deals for flights from Missouri to Porto Alegre that include hotel bookings?

    Yes. In addition to deals on Missouri to Porto Alegre flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missouri to Porto Alegre?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Porto Alegre.

  • Can I find deals for business class flights from Missouri to Porto Alegre?

    Yes. Cheapflights offers flight deals from Missouri to Porto Alegre by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Missouri to Porto Alegre

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Missouri to Porto Alegre

Discover the top airline that operate flights from Missouri to Porto Alegre. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest$1,167Average$1,262FlexibilityNo cancel feeOn-time81%

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