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Cheap flights from St. Louis (STL) to Porto Alegre (POA) from $1,124

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 15 — May 221
From?
To?
Wed 5/15
Wed 5/22
1 adult, Economy
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Cheap flight deals from St. Louis to Porto Alegre

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Porto Alegre (POA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 10, 2024.

Round-trip from

$734
From Lambert-St Louis to Porto Alegre Salgado Filho
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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 Air Canada flights from St. Louis to Porto Alegre

Explore cheap flight options specifically provided by Air Canada 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 2,717,708 searches. Data last updated May 10, 2024.
Peruse some of the lowest-priced Air Canada flights we've found from St. Louis to Porto Alegre. Make sure to check back often as deals are often changing.
Fri 5/1011:00 amSTL - POA
2 stops27h 20mAir Canada
Sun 9/11:30 pmPOA - STL
2 stops32h 31mAir Canada
Deal found 5/8$1,441
Fri 5/1011:00 amSTL - POA
2 stops27h 20mAir Canada
Sun 9/11:30 pmPOA - STL
2 stops32h 31mAir Canada
Deal found 5/9$1,446

Cheap Copa Airlines flights from St. Louis to Porto Alegre

Explore cheap flight options specifically provided by Copa 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 2,717,708 searches. Data last updated May 10, 2024.
Browse through some of the cheapest Copa Airlines flights traveling from St. Louis to Porto Alegre. Make sure to examine the flight information before completing your reservation.
Thu 8/228:25 amSTL - POA
2 stops37h 52mCopa Airlines
Sun 8/251:26 amPOA - STL
2 stops34h 30mCopa Airlines
Deal found 5/8$2,382
Thu 8/228:25 amSTL - POA
2 stops37h 52mCopa Airlines
Sun 8/251:26 amPOA - STL
2 stops34h 30mCopa Airlines
Deal found 5/9$2,432

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

Find cheap flight options from St. Louis to Porto Alegre specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,717,708 searches. Prices were last updated on May 10, 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 5/1011:00 amSTL - POA
2 stops27h 20mAir Canada
Sun 9/11:30 pmPOA - STL
2 stops32h 31mAir Canada
Deal found 5/9$1,446

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 2,717,708 searches. Data last updated May 10, 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 8/225:05 pmSTL - POA
2 stops24h 15mLATAM Airlines
Mon 8/267:20 amPOA - STL
2 stops29h 27mLATAM Airlines
Deal found 5/8$1,124
Fri 5/1011:00 amSTL - POA
2 stops27h 20mAir Canada
Sun 9/11:30 pmPOA - STL
2 stops32h 31mAir Canada
Deal found 5/9$1,446
Thu 8/228:25 amSTL - POA
2 stops37h 52mCopa Airlines
Sun 8/251:26 amPOA - STL
2 stops34h 30mCopa Airlines
Deal found 5/8$2,382
Thu 8/228:25 amSTL - POA
2 stops37h 52mCopa Airlines
Sun 8/251:26 amPOA - STL
2 stops34h 30mCopa Airlines
Deal found 5/9$2,432

St. Louis to Porto Alegre flights leaving soon

Find last-minute flight options from St. Louis to Porto Alegre for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,717,708 searches. Data last updated May 10, 2024.
Book one of these great deals on flights from St. Louis to Porto Alegre. To prevent any unwanted surprises, users should verify their flight info before booking.
Fri 5/1011:00 amSTL - POA
2 stops27h 20mAir Canada
Sun 9/11:30 pmPOA - STL
2 stops32h 31mAir Canada
Deal found 5/8$1,441
Fri 5/1011:00 amSTL - POA
2 stops27h 20mAir Canada
Sun 9/11:30 pmPOA - STL
2 stops32h 31mAir Canada
Deal found 5/9$1,446

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 2,717,708 searches. Data last updated May 10, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,124 - $2,432

Route

Depart

Return

Price

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Thu 8/22

2 stops24h 15m

Porto Alegre Salgado Filho

Mon 8/26

2 stops29h 27m

$1,124

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Thu 8/22

2 stops37h 52m

Porto Alegre Salgado Filho

Sun 8/25

2 stops34h 30m

$2,382

Lambert-St LouisPorto Alegre Salgado Filho

STL - POA

STLPOA

Lambert-St Louis

Thu 8/22

2 stops37h 52m

Porto Alegre Salgado Filho

Sun 8/25

2 stops34h 30m

$2,432

Flights are sorted by cheapest first

Deals found on 5/8

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 May 5, 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.
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Average price of flights to Porto Alegre by month

Plan your trip from St. Louis to Porto Alegre by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Porto Alegre is currently $0 while a round-trip flight costs $1,979. Price data was last updated on May 5, 2024.

Currently, May is the cheapest month in which you can book a flight from St. Louis to Porto Alegre (average of $734). Flying from St. Louis to Porto Alegre in December is currently the most expensive (average of $1,235). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$1,004

February

$936

March

$831

April

$846

May

$734

June

$847

July

$946

August

$740

September

$881

October

$891

November

$815

December

$1,235

Temperature and rainfall in Porto Alegre by month

Plan your trip to Porto Alegre by taking into account the average temperature and rainfall totals by month.

POA

Temperature

55.4 - 77 °F

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 May 10, 2024.
Read reviews from past customers who have flown Air Canada 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.
Copa Airlines
8.0
Very good
2,762 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.2

Food

7.3

Crew

8.3

Comfort

7.7

Reviews

1 / 10

The food is horrible and little, a single meal is served on a 7 hour flight. The movies are old and there are very few options in Portuguese. Regarding the crew, they are not helpful or friendly.

Copa Airlines
8.0
Very good
2,762 reviews
Copa Airlines
8.0
Very good
2,762 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.2

Food

7.3

Crew

8.3

Comfort

7.7

Reviews

1 / 10

The food is horrible and little, a single meal is served on a 7 hour flight. The movies are old and there are very few options in Portuguese. Regarding the crew, they are not helpful or friendly.

LATAM Airlines
7.6
Good
2,439 reviews
Copa Airlines
8.0
Very good
2,762 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.2

Food

7.3

Crew

8.3

Comfort

7.7

Reviews

1 / 10

The food is horrible and little, a single meal is served on a 7 hour flight. The movies are old and there are very few options in Portuguese. Regarding the crew, they are not helpful or friendly.

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 $1,200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Porto Alegre for under $1,200. The cheapest flight booked recently is on LATAM Airlines for just $1,124, but on average you can expect to pay $1,979.

  • Are there last-minute flights available from St. Louis to Porto Alegre for under $1,500?

    There are currently 2+ open flights from St. Louis to Porto Alegre within the next 7 days for less than $1,500.

  • What are the cheapest airlines flying from St. Louis to Porto Alegre round-trip?

    Flying on LATAM Airlines is currently your cheapest option to Porto Alegre, with prices starting at $1,124. Another option worth looking into is Copa Airlines, starting at $2,382 round trip.

  • 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 5/9.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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

Porto Alegre car rentals
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 2,717,708 searches. Data last updated May 10, 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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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from St. Louis to Porto Alegre. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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.

Can Cheapflights find flights from St. Louis to Porto Alegre with no change fees?

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

Can Cheapflights notify me if prices for flights from St. Louis to Porto Alegre become cheaper?

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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