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Cheap flights from San Antonio to Porto Alegre from $1,306

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Porto Alegre departing on 11/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
Travel Warning: Due to flooding, the airport may be currently closed. Check local travel advisories before booking.

Find the cheapest flights from San Antonio to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
5:30 am - 4:50 pmSAT  San Antonio-POA Porto Alegre Salgado Filho
32h 20m2 stops Atlanta Hartsfield-Jackson Santiago Arturo Merino Benitez
LATAM Airlines Logo
7:30 am - 12:31 amPOA  Porto Alegre Salgado Filho-SAT San Antonio
20h 01m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson
$1,306LATAM Airlines
Thu, Nov 12 - Mon, Nov 16
LATAM Airlines Logo
1:46 pm - 4:50 pmSAT  San Antonio-POA Porto Alegre Salgado Filho
24h 04m2 stops Atlanta Hartsfield-Jackson Santiago Arturo Merino Benitez
LATAM Airlines Logo
7:30 am - 12:31 amPOA  Porto Alegre Salgado Filho-SAT San Antonio
20h 01m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson
$1,356LATAM Airlines
Thu, Nov 12 - Mon, Nov 16
United Airlines Logo
11:45 am - 2:20 pmSAT  San Antonio-POA Porto Alegre Salgado Filho
23h 35m3 stops Houston George Bush Intcntl Washington, D.C. Dulles Intl Sao Paulo Guarulhos Intl
United Airlines Logo
3:30 pm - 8:29 amPOA  Porto Alegre Salgado Filho-SAT San Antonio
19h 59m2 stops Rio de Janeiro–Galeão Intl Houston George Bush Intcntl
$3,011United Airlines
Thu, Nov 12 - Mon, Nov 16
United Airlines Logo
11:45 am - 2:20 pmSAT  San Antonio-POA Porto Alegre Salgado Filho
23h 35m3 stops Houston George Bush Intcntl Washington, D.C. Dulles Intl Sao Paulo Guarulhos Intl
United Airlines Logo
3:30 pm - 8:29 amPOA  Porto Alegre Salgado Filho-SAT San Antonio
19h 59m2 stops Rio de Janeiro–Galeão Intl Houston George Bush Intcntl
$3,061United Airlines
Thu, Nov 12 - Mon, Nov 16

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LATAM Airlines flights from San Antonio to Porto Alegre

Our best LATAM Airlines deals on San Antonio to Porto Alegre flight tickets
LATAM Airlines
Nov 12
SAT5:30 amSan Antonio
32h 20m
2 stops
POA4:50 pmPorto Alegre Salgado Filho
Nov 16
POA7:30 amPorto Alegre Salgado Filho
20h 01m
2 stops
SAT12:31 amSan Antonio
$1,306
LATAM Airlines
Nov 12
SAT1:46 pmSan Antonio
24h 04m
2 stops
POA4:50 pmPorto Alegre Salgado Filho
Nov 16
POA7:30 amPorto Alegre Salgado Filho
20h 01m
2 stops
SAT12:31 amSan Antonio
$1,356
LATAM Airlines
Aug 21
SAT7:55 amSan Antonio
20h 25m
2 stops
POA6:20 amPorto Alegre Salgado Filho
Aug 24
POA7:20 amPorto Alegre Salgado Filho
19h 08m
2 stops
SAT12:28 amSan Antonio
$1,382

United Airlines flights from San Antonio to Porto Alegre

Our best United Airlines deals on San Antonio to Porto Alegre flight tickets
United Airlines
Aug 26
SAT2:15 pmSan Antonio
22h 30m
2 stops
POA2:45 pmPorto Alegre Salgado Filho
Aug 29
POA4:55 pmPorto Alegre Salgado Filho
20h 05m
2 stops
SAT11:00 amSan Antonio
$2,013
United Airlines
Nov 12
SAT11:45 amSan Antonio
23h 35m
3 stops
POA2:20 pmPorto Alegre Salgado Filho
Nov 16
POA3:30 pmPorto Alegre Salgado Filho
19h 59m
2 stops
SAT8:29 amSan Antonio
$3,011
United Airlines
Nov 12
SAT11:45 amSan Antonio
23h 35m
3 stops
POA2:20 pmPorto Alegre Salgado Filho
Nov 16
POA3:30 pmPorto Alegre Salgado Filho
19h 59m
2 stops
SAT8:29 amSan Antonio
$3,061

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio 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, momondo users made 832,500 searches. Data last updated August 13, 2026.
Use the filters below to find and compare flights from San Antonio to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioPorto Alegre

SAT San Antonio - POA Porto Alegre Salgado Filho

SATPOA

San Antonio

Thu 11/12

5:30 am-4:50 pm

2 stops32h 20m

Porto Alegre Salgado Filho

Mon 11/16

7:30 am-12:31 am

2 stops20h 01m

$1,306

San AntonioPorto Alegre

SAT San Antonio - POA Porto Alegre Salgado Filho

SATPOA

San Antonio

Thu 11/12

1:46 pm-4:50 pm

2 stops24h 04m

Porto Alegre Salgado Filho

Mon 11/16

7:30 am-12:31 am

2 stops20h 01m

$1,356
Quickest round-trip

San AntonioPorto Alegre

SAT San Antonio - POA Porto Alegre Salgado Filho

SATPOA

San Antonio

Thu 11/12

11:45 am-2:20 pm

3 stops23h 35m

Porto Alegre Salgado Filho

Mon 11/16

3:30 pm-8:29 am

2 stops19h 59m

$3,011

San AntonioPorto Alegre

SAT San Antonio - POA Porto Alegre Salgado Filho

SATPOA

San Antonio

Thu 11/12

11:45 am-2:20 pm

3 stops23h 35m

Porto Alegre Salgado Filho

Mon 11/16

3:30 pm-8:29 am

2 stops19h 59m

$3,061

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Porto Alegre from

How to get the cheapest flight ticket from San Antonio to Porto Alegre

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to Porto Alegre?

LATAM Airlines, American Airlines and GOL are the top three most popular airlines that fly to Porto Alegre from San Antonio according to our data. LATAM Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Porto Alegre. Keep in mind that there are 3 different airlines that fly to Porto Alegre on a routine basis, so you have a few additional options to choose from.

When to book flights from San Antonio to Porto Alegre

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to Porto Alegre according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to Porto Alegre (SAT to POA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Porto Alegre

Fastest flight time

22h 15m

Direct flights

None
The fastest flight from San Antonio to Porto Alegre takes 22h 15m
There are no direct flights from San Antonio to Porto Alegre. There are no popular flight routes from San Antonio to Porto Alegre.
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Frequently asked questions about flying from San Antonio to Porto Alegre

  • How far is San Antonio to Porto Alegre Salgado Filho by plane?

    Porto Alegre Salgado Filho is 5149.9 mi away from San Antonio. Typically, this will take 22h 15m by plane in normal conditions.

  • When did momondo last update prices for flights from San Antonio Airport to Porto Alegre Salgado Filho Airport?

    Prices for flights from San Antonio Airport to Porto Alegre Salgado Filho Airport refresh daily.

  • How old do you have to be to fly from San Antonio Airport to Porto Alegre Salgado Filho Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Antonio Airport to Porto Alegre Salgado Filho Airport.

  • What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?

    The necessary travel and health documents for your Porto Alegre Salgado Filho Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Porto Alegre?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Antonio to Porto Alegre. momondo saves you time and could save you money on your trip.

Can I find flights from San Antonio to Porto Alegre with flexible booking policies on momondo?

Flights from San Antonio to Porto Alegre with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from San Antonio to Porto Alegre?

momondo provides multiple filters to help you find the best flight to Porto Alegre from San Antonio. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from San Antonio to Porto Alegre right now. Can momondo alert me if prices change?

Price alerts on flights to Porto Alegre from San Antonio are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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