$495+ Cheap flights from Missouri to Porto Alegre (POA)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — POA
Nov 15 — Nov 221
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap 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 October 16, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,056 (GOL) |
One-way from | $495 (Kiwi.com) |
Find flight deals from Missouri to Porto Alegre
Cheapest flights from Missouri to Porto AlegreExplore the most affordable flight options available from Missouri to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.
Explore the most affordable flight options available from Missouri to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.
This Delta deal was found by Cheapflights users on 10/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:00 amSTL - POA
2 stops21h 30mDelta
Sat 11/226:00 pmPOA - STL
2 stops25h 07mDelta
Deal found 10/14![Delta logo]()
$1,290
This KAYAK deal was found by Cheapflights users on 10/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 pmSTL - POA
2 stops45h 40mGOL
Tue 12/3010:35 amPOA - STL
2 stops27h 15mGOL
Deal found 10/15![GOL logo]()
$1,818
This Orbitz deal was found by Cheapflights users on 10/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 pmSTL - POA
2 stops45h 40mMultiple Airlines
Mon 12/294:40 amPOA - STL
2 stops22h 02mMultiple Airlines
Deal found 10/15![Multiple Airlines logo]()
$2,057
This Ovago deal was found by Cheapflights users on 10/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 amSTL - POA
2 stops21h 30mLATAM Airlines
Tue 12/3012:40 pmPOA - STL
3 stops37h 58mLATAM Airlines
Deal found 10/15![LATAM Airlines logo]()
$2,386
This American Airlines deal was found by Cheapflights users on 10/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 pmSTL - POA
2 stops20h 40mAmerican Airlines
Tue 12/306:25 pmPOA - STL
3 stops21h 49mAmerican Airlines
Deal found 10/15![American Airlines logo]()
$3,233
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 October 16, 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
Wed 11/12
6:00 am-6:30 am
2 stops21h 30m
Porto Alegre Salgado Filho
Sat 11/22
6:00 pm-4:07 pm
2 stops25h 07m
$1,290
St. LouisPorto Alegre
STL - POA
STLPOA
Lambert-St Louis
Fri 12/19
6:00 pm-6:40 pm
2 stops45h 40m
Porto Alegre Salgado Filho
Tue 12/30
10:35 am-10:50 am
2 stops27h 15m
$1,818
St. LouisPorto Alegre
STL - POA
STLPOA
Lambert-St Louis
Fri 12/19
6:00 am-6:30 am
2 stops21h 30m
Porto Alegre Salgado Filho
Tue 12/30
12:40 pm-11:38 pm
3 stops37h 58m
$2,386
St. LouisPorto Alegre
STL - POA
STLPOA
Lambert-St Louis
Fri 12/19
6:00 pm-5:40 pm
2 stops20h 40m
Porto Alegre Salgado Filho
Tue 12/30
6:25 pm-1:14 pm
3 stops21h 49m
$3,233
St. LouisPorto Alegre
STL - POA
STLPOA
Lambert-St Louis
Fri 12/19
11:41 am-3:40 pm
2 stops24h 59m
Porto Alegre Salgado Filho
Mon 12/29
4:40 am-8:58 am
2 stops31h 18m
$7,458
St. LouisPorto Alegre
STL - POA
STLPOA
Lambert-St Louis
Sat 12/13
3:30 pm-10:45 pm
3 stops52h 15m
$495
St. LouisPorto Alegre
STL - POA
STLPOA
Lambert-St Louis
Fri 12/12
10:42 am-6:40 pm
3 stops52h 58m
$501
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
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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.
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 October 16, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,167 | Average$1,287 | FlexibilityNo cancel fee | On-time81% |