Which airports can I use when flying from St. Louis to Porto Alegre?

Flights from St. Louis to Porto Alegre usually depart from Lambert-St Louis (STL) and arrive at Porto Alegre Salgado Filho (POA).

What cabin classes can I book on flights from St. Louis to Porto Alegre?

Only Economy Class is available on flights from St. Louis to Porto Alegre.

Can I save money by using flexible dates for flights from St. Louis to Porto Alegre?

Yes. Flexible dates can save you up to 34% on flights from St. Louis to Porto Alegre. Monday is the cheapest departure day at $1,183 round-trip on average, while Tuesday is the most expensive at $1,787, a difference of $604. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Porto Alegre?

Some of the most popular sights in Porto Alegre are Araujo Vianna Auditorium, Fiergs Exhibition and Convention Center and Moinhos de Vento Park. These are among the most viewed places in Porto Alegre on KAYAK.

Do I need a passport to fly from St. Louis to Porto Alegre?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from St. Louis to Porto Alegre changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $1,425 to $5,467. That means the highest observed fare was about 4x higher than the lowest one.

What is the time difference between St. Louis and Porto Alegre?

Porto Alegre is 2 hours ahead of St. Louis (Brasilia Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Porto Alegre Salgado Filho Airport (POA)?

Porto Alegre Salgado Filho Airport (POA) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include: • FOCO • Localiza • Avis • MOVIDA • Budget

How much should I expect to pay for a St. Louis to Porto Alegre flight?

Round-trip flights from St. Louis to Porto Alegre range from $1,167 to $1,320, with an average of $1,262 over the past 12 months. Anything below $1,167 counts as a good deal.

How much is a round-trip flight from St. Louis to Porto Alegre?

Round-trip flights from St. Louis to Porto Alegre typically range from $1,167 to $1,320. The lowest price found in the past 5 days was $1,425, on Air Canada.

Which airline is the cheapest to fly from St. Louis to Porto Alegre?

Air Canada ($1,425) and LATAM Airlines ($1,688) are the cheapest airlines to fly round-trip from St. Louis to Porto Alegre according to KAYAK data over the last 5 days.

$1,425 CHEAP FLIGHTS from St. Louis to Porto Alegre (STL - POA)

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Cheapest round-trip

$1,425

Typical prices: $1,167-$1,320

Air Canada

Thu 3/1Sun 3/4

STL - POA • 2 stops

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Flight Deals

Cheap Flights from St. Louis to Porto Alegre (STL-POA)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from St. Louis to Porto Alegre

Mon, Mar 1 - Thu, Mar 4

4:05 pm - 12:55 pmSTL Lambert-St Louis-POA Porto Alegre Salgado Filho

17h 50m2 stops Toronto Pearson Intl Sao Paulo Guarulhos Intl

3:45 pm - 3:26 pmPOA Porto Alegre Salgado Filho-STL Lambert-St Louis

26h 41m2 stops Sao Paulo Guarulhos Intl Toronto Pearson Intl

$1,425Air Canada

Mon, Mar 1 - Wed, Mar 3

4:05 pm - 12:55 pmSTL Lambert-St Louis-POA Porto Alegre Salgado Filho

17h 50m2 stops Toronto Pearson Intl Sao Paulo Guarulhos Intl

3:30 pm - 3:26 pmPOA Porto Alegre Salgado Filho-STL Lambert-St Louis

26h 56m2 stops Rio de Janeiro–Galeão Intl Toronto Pearson Intl

$1,563Air Canada

Sat, Dec 12 - Fri, Jan 8

11:00 am - 8:30 amSTL Lambert-St Louis-POA Porto Alegre Salgado Filho

18h 30m3 stops Atlanta Hartsfield-Jackson Orlando Sao Paulo Guarulhos Intl

5:15 am - 8:49 pmPOA Porto Alegre Salgado Filho-STL Lambert-St Louis

18h 34m3 stops Sao Paulo Guarulhos Intl Orlando Atlanta Hartsfield-Jackson

$1,642Multiple Airlines

Sat, Dec 12 - Fri, Jan 8

11:00 am - 4:50 pmSTL Lambert-St Louis-POA Porto Alegre Salgado Filho

26h 50m2 stops Atlanta Hartsfield-Jackson Santiago Arturo Merino Benitez

9:15 am - 10:48 amPOA Porto Alegre Salgado Filho-STL Lambert-St Louis

28h 33m3 stops Sao Paulo Guarulhos Intl Miami Atlanta Hartsfield-Jackson

$1,642Multiple Airlines

Mon, Mar 1 - Thu, Mar 4

9:00 am - 6:40 amSTL Lambert-St Louis-POA Porto Alegre Salgado Filho

18h 40m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

7:30 am - 11:39 pmPOA Porto Alegre Salgado Filho-STL Lambert-St Louis

19h 09m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,688LATAM Airlines

Mon, Mar 1 - Wed, Mar 3

1:08 pm - 12:55 pmSTL Lambert-St Louis-POA Porto Alegre Salgado Filho

20h 47m3 stops Chicago O'Hare Intl Houston George Bush Intcntl Sao Paulo Guarulhos Intl

3:30 pm - 9:42 amPOA Porto Alegre Salgado Filho-STL Lambert-St Louis

21h 12m2 stops Rio de Janeiro–Galeão Intl Houston George Bush Intcntl

$1,781United Airlines

Mon, Mar 1 - Thu, Mar 4

1:08 pm - 12:55 pmSTL Lambert-St Louis-POA Porto Alegre Salgado Filho

20h 47m3 stops Chicago O'Hare Intl Houston George Bush Intcntl Sao Paulo Guarulhos Intl

3:30 pm - 9:42 amPOA Porto Alegre Salgado Filho-STL Lambert-St Louis

21h 12m2 stops Rio de Janeiro–Galeão Intl Houston George Bush Intcntl

$1,782United Airlines

Mon, Mar 1 - Wed, Mar 3

1:08 pm - 12:55 pmSTL Lambert-St Louis-POA Porto Alegre Salgado Filho

20h 47m3 stops Chicago O'Hare Intl Houston George Bush Intcntl Sao Paulo Guarulhos Intl

2:00 pm - 9:48 amPOA Porto Alegre Salgado Filho-STL Lambert-St Louis

22h 48m2 stops Sao Paulo Guarulhos Intl Washington, D.C. Dulles Intl

$1,782United Airlines

Sat, Dec 12 - Fri, Jan 8

2:33 pm - 4:50 pmSTL Lambert-St Louis-POA Porto Alegre Salgado Filho

23h 17m2 stops Atlanta Hartsfield-Jackson Santiago Arturo Merino Benitez

5:15 am - 8:52 amPOA Porto Alegre Salgado Filho-STL Lambert-St Louis

30h 37m3 stops Sao Paulo Guarulhos Intl Rio de Janeiro–Galeão Intl Atlanta Hartsfield-Jackson

$1,985LATAM Airlines

Thu, Dec 10 - Fri, Jan 8

10:38 am - 11:50 amSTL Lambert-St Louis-POA Porto Alegre Salgado Filho

22h 12m2 stops Miami Brasilia

5:20 am - 5:26 pmPOA Porto Alegre Salgado Filho-STL Lambert-St Louis

39h 06m2 stops Brasilia Miami

$2,019GOL

Booking Insights

Price, demand and travel trends for St. Louis to Porto Alegre flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

How much is a round-trip flight from St. Louis to Porto Alegre? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Porto Alegre departing in march.

Find deals

Cheapest flight	$1,425

Round-trip 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.

What cabin classes can I book on flights from St. Louis to Porto Alegre?
Only Economy Class is available on flights from St. Louis to Porto Alegre.
Do I need a passport to fly from St. Louis to Porto Alegre?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How much should I expect to pay for a St. Louis to Porto Alegre flight?
Round-trip flights from St. Louis to Porto Alegre range from $1,167 to $1,320, with an average of $1,262 over the past 12 months. Anything below $1,167 counts as a good deal.
Have flight prices from St. Louis to Porto Alegre changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $1,425 to $5,467. That means the highest observed fare was about 4x higher than the lowest one.
What car rental options are available at Porto Alegre Salgado Filho Airport (POA)?
Porto Alegre Salgado Filho Airport (POA) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include:

• FOCO
• Localiza
• Avis
• MOVIDA
• Budget
Which airports can I use when flying from St. Louis to Porto Alegre?
Flights from St. Louis to Porto Alegre usually depart from Lambert-St Louis (STL) and arrive at Porto Alegre Salgado Filho (POA).
Can I save money by using flexible dates for flights from St. Louis to Porto Alegre?
Yes. Flexible dates can save you up to 34% on flights from St. Louis to Porto Alegre. Monday is the cheapest departure day at $1,183 round-trip on average, while Tuesday is the most expensive at $1,787, a difference of $604.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What is the time difference between St. Louis and Porto Alegre?
Porto Alegre is 2 hours ahead of St. Louis (Brasilia Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Porto Alegre?
Some of the most popular sights in Porto Alegre are Araujo Vianna Auditorium, Fiergs Exhibition and Convention Center and Moinhos de Vento Park. These are among the most viewed places in Porto Alegre on KAYAK.

If your dates are flexible, aim for a Monday departure and avoid flying on Tuesday. On this route, Monday flights average $1,183, about $604 less than Tuesday fares (34% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to Porto Alegre Salgado Filho Airport.

• ibis Porto Alegre Aeroporto
• Novotel Porto Alegre Airport
• Hotel Express Aeroporto

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STL - POA

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Everything you should know

Cheap Flights from St. Louis to Porto Alegre (STL-POA)

Recent round-trip flight deals from St. Louis to Porto Alegre

Recent one-way flight deals from St. Louis to Porto Alegre

Recent last minute flight deals from St. Louis to Porto Alegre

Price, demand and travel trends for St. Louis to Porto Alegre flights

How much is a round-trip flight from St. Louis to Porto Alegre?

Which airline is the cheapest to fly from St. Louis to Porto Alegre?

Key details for St. Louis to Porto Alegre flights

Cheapest flight

When to book flights from St. Louis to Porto Alegre

Your St. Louis to Porto Alegre flight questions, answered

Your guide to booking St. Louis to Porto Alegre flights

More options for your flight from St. Louis to Porto Alegre

Complete your trip to Porto Alegre with a hotel stay or car rental

Information on your arrival and departure airports

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