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Cheap flights from San Francisco to Porto Alegre from $320

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Porto Alegre departing on 5/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Francisco to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 2:20 pm
SFO
-
POA
27h 20m
2 stops
United Airlines Logo
3:25 pm - 9:16 am
POA
-
SFO
45h 51m
2 stops
$711United Airlines
Tue, Apr 21 - Thu, Apr 23
United Airlines Logo
12:10 pm - 2:20 pm
SFO
-
POA
22h 10m
2 stops
United Airlines Logo
3:25 pm - 7:37 pm
POA
-
SFO
32h 12m
2 stops
$805United Airlines
Tue, Apr 21 - Thu, Apr 23
United Airlines Logo
8:20 am - 2:20 pm
SFO
-
POA
26h 00m
2 stops
United Airlines Logo
3:25 pm - 7:37 pm
POA
-
SFO
32h 12m
2 stops
$825United Airlines
Tue, Apr 21 - Thu, Apr 23
Copa Airlines Logo
8:06 pm - 12:20 am
SFO
-
POA
24h 14m
1 stop
Copa Airlines Logo
1:20 am - 11:40 pm
POA
-
SFO
26h 20m
1 stop
$1,029Copa Airlines
Wed, Jun 17 - Sun, Jun 28
LATAM Airlines Logo
7:00 am - 6:15 pm
SFO
-
POA
31h 15m
2 stops
LATAM Airlines Logo
7:25 am - 11:12 pm
POA
-
SFO
19h 47m
2 stops
$1,063LATAM Airlines
Wed, Jun 17 - Mon, Jun 29
LATAM Airlines Logo
8:55 am - 6:15 pm
SFO
-
POA
29h 20m
2 stops
LATAM Airlines Logo
7:25 am - 11:12 pm
POA
-
SFO
19h 47m
2 stops
$1,097LATAM Airlines
Wed, Jun 17 - Mon, Jun 29
LATAM Airlines Logo
11:05 am - 6:15 pm
SFO
-
POA
27h 10m
2 stops
LATAM Airlines Logo
7:05 pm - 11:59 am
POA
-
SFO
20h 54m
2 stops
$1,174LATAM Airlines
Mon, Jun 29 - Mon, Jul 13
LATAM Airlines Logo
8:55 am - 6:15 pm
SFO
-
POA
29h 20m
2 stops
LATAM Airlines Logo
7:05 pm - 11:59 am
POA
-
SFO
20h 54m
2 stops
$1,200LATAM Airlines
Fri, Jul 3 - Mon, Jul 13
LATAM Airlines Logo
7:00 am - 6:15 pm
SFO
-
POA
31h 15m
2 stops
LATAM Airlines Logo
8:05 pm - 9:35 pm
POA
-
SFO
29h 30m
3 stops
$1,218LATAM Airlines
Wed, Jun 17 - Mon, Jun 29
LATAM Airlines Logo
11:05 am - 6:15 pm
SFO
-
POA
27h 10m
2 stops
LATAM Airlines Logo
8:05 pm - 9:35 pm
POA
-
SFO
29h 30m
3 stops
$1,228LATAM Airlines
Wed, Jun 17 - Mon, Jun 29

United Airlines flights from San Francisco to Porto Alegre

Our best United Airlines deals on San Francisco to Porto Alegre flight tickets
United Airlines
Apr 21
SFO7:00 amSan Francisco
27h 20m
2 stops
POA2:20 pmPorto Alegre Salgado Filho
Apr 23
POA3:25 pmPorto Alegre Salgado Filho
45h 51m
2 stops
SFO9:16 amSan Francisco
$711
United Airlines
Apr 21
SFO12:10 pmSan Francisco
22h 10m
2 stops
POA2:20 pmPorto Alegre Salgado Filho
Apr 23
POA3:25 pmPorto Alegre Salgado Filho
32h 12m
2 stops
SFO7:37 pmSan Francisco
$805
United Airlines
Apr 21
SFO8:20 amSan Francisco
26h 00m
2 stops
POA2:20 pmPorto Alegre Salgado Filho
Apr 23
POA3:25 pmPorto Alegre Salgado Filho
32h 12m
2 stops
SFO7:37 pmSan Francisco
$825

Copa Airlines flights from San Francisco to Porto Alegre

Our best Copa Airlines deals on San Francisco to Porto Alegre flight tickets
Copa Airlines
Jun 17
SFO8:06 pmSan Francisco
24h 14m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Jun 28
POA1:20 amPorto Alegre Salgado Filho
26h 20m
1 stop
SFO11:40 pmSan Francisco
$1,029
Copa Airlines
Feb 11
SFO12:42 amSan Francisco
18h 43m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Feb 20
POA1:30 amPorto Alegre Salgado Filho
26h 50m
1 stop
SFO11:20 pmSan Francisco
$2,242

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco 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 January 29, 2026.
Use the filters below to find and compare flights from San Francisco to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 4/21

7:00 am-2:20 pm

2 stops27h 20m

Porto Alegre Salgado Filho

Thu 4/23

3:25 pm-9:16 am

2 stops45h 51m

$711

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 4/21

12:10 pm-2:20 pm

2 stops22h 10m

Porto Alegre Salgado Filho

Thu 4/23

3:25 pm-7:37 pm

2 stops32h 12m

$805

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 4/21

8:20 am-2:20 pm

2 stops26h 00m

Porto Alegre Salgado Filho

Thu 4/23

3:25 pm-7:37 pm

2 stops32h 12m

$825

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 6/17

8:06 pm-12:20 am

1 stop24h 14m

Porto Alegre Salgado Filho

Sun 6/28

1:20 am-11:40 pm

1 stop26h 20m

$1,029

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 6/17

7:00 am-6:15 pm

2 stops31h 15m

Porto Alegre Salgado Filho

Mon 6/29

7:25 am-11:12 pm

2 stops19h 47m

$1,063

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 6/17

8:55 am-6:15 pm

2 stops29h 20m

Porto Alegre Salgado Filho

Mon 6/29

7:25 am-11:12 pm

2 stops19h 47m

$1,097

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Mon 6/29

11:05 am-6:15 pm

2 stops27h 10m

Porto Alegre Salgado Filho

Mon 7/13

7:05 pm-11:59 am

2 stops20h 54m

$1,174

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Fri 7/3

8:55 am-6:15 pm

2 stops29h 20m

Porto Alegre Salgado Filho

Mon 7/13

7:05 pm-11:59 am

2 stops20h 54m

$1,200

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 6/17

7:00 am-6:15 pm

2 stops31h 15m

Porto Alegre Salgado Filho

Mon 6/29

8:05 pm-9:35 pm

3 stops29h 30m

$1,218

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 6/17

11:05 am-6:15 pm

2 stops27h 10m

Porto Alegre Salgado Filho

Mon 6/29

8:05 pm-9:35 pm

3 stops29h 30m

$1,228

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from San Francisco 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

Can stopping save me money on San Francisco to Porto Alegre flights?

You could potentially save up to 47% on your flight if you consider stops on a San Francisco to Porto Alegre flight.

When to book flights from San Francisco to Porto Alegre

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

Cheap San Francisco to Porto Alegre (SFO to POA) flight deals and tips

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

Fastest flight time

26h 00m

Direct flights

None
The fastest flight from San Francisco to Porto Alegre takes 26h 00m
There are no direct flights from San Francisco to Porto Alegre. There are no popular flight routes from San Francisco to Porto Alegre.
Search flight deals

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

    The straight-line distance from San Francisco to Porto Alegre Salgado Filho is 6555.1 mi. By plane, this route typically takes 26h 00m.

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

    Prices for flights from San Francisco Airport to Porto Alegre Salgado Filho Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from San Francisco Airport to Porto Alegre Salgado Filho Airport?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Porto Alegre Salgado Filho Airport.

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

    The travel and health documents required for your trip to Porto Alegre Salgado Filho Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Alegre Salgado Filho Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from San Francisco to Porto Alegre?

Best airlines flying from San Francisco to Porto Alegre

Compare and see reviews for airlines that fly from San Francisco to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
Copa AirlinesPriceFrom $345Free CancellationRating
7.5
1,560 reviews
Search Copa Airlines flights
United AirlinesPriceFrom $464Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights

Why use momondo?

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

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

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

Flights from San Francisco 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 Francisco to Porto Alegre?

momondo helps you find the best flight between San Francisco and Porto Alegre by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Porto Alegre, momondo offers a useful price alert feature which will track prices for flights to Porto Alegre from San Francisco and alert you when they change.

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