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Cheap flights from St. Louis (STL) to Porto Alegre (POA) from $1,014

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 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.
STL — POA
May 1 — May 81
From?
To?
Wed 5/1
Wed 5/8
1 adult, Economy
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What is the cheapest day to fly round-trip from St. Louis to Porto Alegre?

Leaving on a Wednesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 15% on the overall cost on flights from St. Louis to Porto Alegre.

When is the cheapest time to fly from St. Louis to Porto Alegre (STL - POA)?

One of the essential ways to save on airfare from St. Louis to Porto Alegre is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 11% on airfare.

Cheap Delta flights from St. Louis to Porto Alegre

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Porto Alegre. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,068,117 searches. Data last updated April 26, 2024.
Peruse some of the lowest-priced Delta flights we've found from St. Louis to Porto Alegre. Make sure to check back often as deals are often changing.
Thu 8/222:05 pmSTL - POA
2 stops22h 25mDelta
Mon 8/266:05 amPOA - STL
2 stops19h 34mDelta
Deal found 4/25$1,114
Fri 5/107:10 amSTL - POA
2 stops21h 10mDelta
Sun 9/16:05 amPOA - STL
2 stops19h 34mDelta
Deal found 4/26$1,332

Cheap American Airlines flights from St. Louis to Porto Alegre

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Porto Alegre. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,068,117 searches. Data last updated April 26, 2024.
Browse through some of the cheapest American Airlines flights traveling from St. Louis to Porto Alegre. Make sure to examine the flight information before completing your reservation.
Fri 5/107:30 amSTL - POA
3 stops25h 00mAmerican Airlines
Sun 9/11:30 pmPOA - STL
2 stops30h 51mAmerican Airlines
Deal found 4/25$1,486
Fri 5/105:19 amSTL - POA
2 stops27h 11mAmerican Airlines
Sun 9/11:30 pmPOA - STL
3 stops24h 33mAmerican Airlines
Deal found 4/26$1,568
Fri 5/107:30 amSTL - POA
3 stops25h 00mAmerican Airlines
Sun 9/11:30 pmPOA - STL
3 stops24h 33mAmerican Airlines
Deal found 4/25$1,569
Fri 5/107:30 amSTL - POA
3 stops25h 00mAmerican Airlines
Sun 9/11:30 pmPOA - STL
3 stops24h 20mAmerican Airlines
Deal found 4/26$1,684

Cheap St. Louis to Porto Alegre flights in April & May 2024

Find cheap flight options from St. Louis to Porto Alegre specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,068,117 searches. Prices were last updated on April 26, 2024.
Check out some of the best flight deals from St. Louis to Porto Alegre in 2024. Check back regularly for other flight deals.
Fri 5/107:10 amSTL - POA
2 stops21h 10mDelta
Sun 9/16:05 amPOA - STL
2 stops19h 34mDelta
Deal found 4/26$1,332
Fri 5/104:48 pmSTL - POA
2 stops28h 52mGOL
Sun 9/15:00 pmPOA - STL
2 stops32h 00mGOL
Deal found 4/25$1,413
Fri 5/107:30 amSTL - POA
3 stops25h 00mAmerican Airlines
Sun 9/11:30 pmPOA - STL
2 stops30h 51mAmerican Airlines
Deal found 4/25$1,486
Fri 5/105:19 amSTL - POA
2 stops27h 11mAmerican Airlines
Sun 9/11:30 pmPOA - STL
3 stops24h 33mAmerican Airlines
Deal found 4/26$1,568
Fri 5/107:30 amSTL - POA
3 stops25h 00mAmerican Airlines
Sun 9/11:30 pmPOA - STL
3 stops24h 33mAmerican Airlines
Deal found 4/25$1,569
Fri 5/107:30 amSTL - POA
3 stops25h 00mAmerican Airlines
Sun 9/11:30 pmPOA - STL
3 stops24h 20mAmerican Airlines
Deal found 4/26$1,684
Fri 5/1011:10 amSTL - POA
2 stops35h 09mCopa Airlines
Sat 8/311:30 amPOA - STL
2 stops20h 17mCopa Airlines
Deal found 4/26$1,709
Fri 5/108:27 amSTL - POA
2 stops37h 52mCopa Airlines
Sat 8/311:30 amPOA - STL
2 stops34h 26mCopa Airlines
Deal found 4/25$2,623

St. Louis to Porto Alegre 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Porto Alegre in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,068,117 searches. Data last updated April 26, 2024.
Check out some of the best flight deals from St. Louis to Porto Alegre in 2024. Check back regularly for other flight deals.
Thu 8/223:35 pmSTL - POA
2 stops21h 30mUnited Airlines
Mon 8/266:05 pmPOA - STL
2 stops17h 46mUnited Airlines
Deal found 4/24$1,014
Thu 8/222:05 pmSTL - POA
2 stops22h 25mDelta
Mon 8/266:05 amPOA - STL
2 stops19h 34mDelta
Deal found 4/25$1,114
Fri 5/107:10 amSTL - POA
2 stops21h 10mDelta
Sun 9/16:05 amPOA - STL
2 stops19h 34mDelta
Deal found 4/26$1,332
Fri 5/104:48 pmSTL - POA
2 stops28h 52mGOL
Sun 9/15:00 pmPOA - STL
2 stops32h 00mGOL
Deal found 4/25$1,413
Fri 5/107:30 amSTL - POA
3 stops25h 00mAmerican Airlines
Sun 9/11:30 pmPOA - STL
2 stops30h 51mAmerican Airlines
Deal found 4/25$1,486
Fri 5/105:19 amSTL - POA
2 stops27h 11mAmerican Airlines
Sun 9/11:30 pmPOA - STL
3 stops24h 33mAmerican Airlines
Deal found 4/26$1,568
Fri 5/107:30 amSTL - POA
3 stops25h 00mAmerican Airlines
Sun 9/11:30 pmPOA - STL
3 stops24h 33mAmerican Airlines
Deal found 4/25$1,569
Fri 5/107:30 amSTL - POA
3 stops25h 00mAmerican Airlines
Sun 9/11:30 pmPOA - STL
3 stops24h 20mAmerican Airlines
Deal found 4/26$1,684
Fri 5/1011:10 amSTL - POA
2 stops35h 09mCopa Airlines
Sat 8/311:30 amPOA - STL
2 stops20h 17mCopa Airlines
Deal found 4/26$1,709

Find flights from St. Louis to Porto Alegre within your budget

Customize your flight search to find flights from St. Louis 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 3,068,117 searches. Data last updated April 26, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,014 - $1,709

Route

Depart

Return

Price

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Thu 8/22

2 stops21h 30m

Porto Alegre Salgado Filho

Mon 8/26

2 stops17h 46m

$1,014

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Thu 8/22

2 stops22h 25m

Porto Alegre Salgado Filho

Mon 8/26

2 stops19h 34m

$1,114

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Fri 5/10

2 stops21h 10m

Porto Alegre Salgado Filho

Sun 9/1

2 stops19h 34m

$1,332

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Fri 5/10

2 stops28h 52m

Porto Alegre Salgado Filho

Sun 9/1

2 stops32h 00m

$1,413

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Fri 5/10

3 stops25h 00m

Porto Alegre Salgado Filho

Sun 9/1

2 stops30h 51m

$1,486

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Fri 5/10

2 stops27h 11m

Porto Alegre Salgado Filho

Sun 9/1

3 stops24h 33m

$1,568

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Fri 5/10

3 stops25h 00m

Porto Alegre Salgado Filho

Sun 9/1

3 stops24h 33m

$1,569

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Fri 5/10

3 stops25h 00m

Porto Alegre Salgado Filho

Sun 9/1

3 stops24h 20m

$1,684

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Fri 5/10

2 stops35h 09m

Porto Alegre Salgado Filho

Sat 8/31

2 stops20h 17m

$1,709

Flights are sorted by cheapest first

Deals found on 4/24

When is the cheapest time to fly from St. Louis to Porto Alegre?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Porto Alegre. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Porto Alegre flight should consider departing on Thursday afternoons when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Reviews of airlines servicing Porto Alegre

Get insights into the airlines that provide service to Porto Alegre. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto Alegre. Reviews last updated April 26, 2024.
Read reviews from past customers who have flown Delta, American Airlines and Copa Airlines from St. Louis to Porto Alegre. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,966 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Delta
8.1
Very good
10,966 reviews
Delta
8.1
Very good
10,966 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Copa Airlines
8.0
Very good
2,866 reviews
Delta
8.1
Very good
10,966 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

GOL
7.5
Good
1,346 reviews
Delta
8.1
Very good
10,966 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

United Airlines
7.4
Good
11,228 reviews
Delta
8.1
Very good
10,966 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

American Airlines
7.3
Good
14,889 reviews
Delta
8.1
Very good
10,966 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Related info for your journey

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

  • Can I find flights from St. Louis to Porto Alegre for under $1,100 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Porto Alegre for under $1,100. The cheapest flight booked recently is on United Airlines for just $1,014, but on average you can expect to pay $1,713.

  • What does STL to POA mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Lambert-St Louis Airport to Porto Alegre Salgado Filho Airport flight would often be abbreviated as a STL to POA flight.

  • Can I find deals for flights from St. Louis to Porto Alegre that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Porto Alegre flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Porto Alegre with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Porto Alegre flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

  • How can I find direct flights from St. Louis to Porto Alegre?

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

  • Can I find deals for business class flights from St. Louis to Porto Alegre?

    Yes. Cheapflights offers flight deals from St. Louis 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.

  • Can I find deals for flights from St. Louis to Porto Alegre that allow pets onboard?

    Many airlines flying from St. Louis to Porto Alegre offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Porto Alegre?

    Yes, you can often find last-minute deals on St. Louis to Porto Alegre flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Porto Alegre flight deals updated?

    The St. Louis to Porto Alegre flight deals you see on this page were last updated on 4/26.

See more FAQs

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Complete your trip to Porto Alegre by adding a car rental and/or hotel reservation to your travel itinerary.

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Porto Alegre Salgado Filho Airport car rentals

Top airline flying from St. Louis to Porto Alegre

Discover the top airline that operate flights from St. Louis 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 3,068,117 searches. Data last updated April 26, 2024.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest$1,246Average$1,299FlexibilityNo cancel feeOn-time81%
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Search flights from St. Louis to Porto Alegre by cabin class

Find flights from St. Louis to Porto Alegre, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Why should you use Cheapflights to find cheap flight tickets from St. Louis to Porto Alegre?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Porto Alegre from St. Louis.

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Yes! Cheapflights helps users easily find flights from St. Louis to Porto Alegre with no change fees.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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