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$453+ Cheap flights from Porto Alegre (POA) to San Francisco (SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
POA — SFO
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap flight deals from Porto Alegre to San Francisco

Cheapest flights from Porto Alegre to San Francisco
Explore the most affordable flight options available from Porto Alegre to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2026.

This Air Canada deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:25 pm
POA
-
SFO
2 stops34h 57m
Air Canada
Mon 4/272:30 pm
SFO
-
POA
2 stops45h 55m
Air Canada
Deal found 1/20$806
This Copa Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/11:30 am
POA
-
SFO
1 stop26h 46m
Copa Airlines
Sun 4/261:23 am
SFO
-
POA
1 stop18h 57m
Copa Airlines
Deal found 1/20$849
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/203:25 pm
POA
-
SFO
2 stops35h 31m
United Airlines
Fri 9/185:00 am
SFO
-
POA
2 stops29h 35m
United Airlines
Deal found 1/20$861
This LATAM Airlines deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:05 pm
POA
-
SFO
2 stops24h 06m
LATAM Airlines
Mon 9/2811:05 am
SFO
-
POA
2 stops27h 10m
LATAM Airlines
Deal found 1/18$863
This LATAM Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/27:45 am
POA
-
SFO
2 stops31h 45m
LATAM Airlines
Mon 2/95:55 am
SFO
-
POA
2 stops32h 30m
LATAM Airlines
Deal found 1/19$869
This LATAM Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2710:05 am
POA
-
SFO
2 stops31h 34m
LATAM Airlines
Tue 2/311:40 am
SFO
-
POA
2 stops26h 45m
LATAM Airlines
Deal found 1/20$870
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/25:55 pm
POA
-
SFO
2 stops20h 50m
United Airlines
Mon 2/99:20 pm
SFO
-
POA
2 stops40h 00m
United Airlines
Deal found 1/20$926
This Copa Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/261:45 am
POA
-
SFO
1 stop26h 35m
Copa Airlines
Mon 2/212:42 am
SFO
-
POA
1 stop18h 43m
Copa Airlines
Deal found 1/20$963
This Copa Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/11:30 am
POA
-
SFO
1 stop26h 50m
Copa Airlines
Sun 2/812:42 am
SFO
-
POA
1 stop18h 43m
Copa Airlines
Deal found 1/19$996

Find flight deals from Porto Alegre to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to San Francisco (SFO). 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 January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$806
(Air Canada)

One-way from

$453
(Copa Airlines)

Popular in

January

Cheapest in

April

Average price

$1,886
Provider with most accurate pricing for Porto Alegre Salgado Filho-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Porto Alegre Salgado Filho-San Francisco flights.
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From Porto Alegre Salgado Filho to San Francisco
Search Deals
One-way flight from Porto Alegre Salgado Filho to San Francisco
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($268 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($83 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto Alegre to San Francisco 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 2,558,603 searches. Data last updated January 20, 2026.
Use the filters below to find and compare flights from Porto Alegre to San Francisco that are best for you.

Fly from

Porto Alegre

Fly to

San Francisco

Route

Depart

Return

Price

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Mon 3/2

5:10 pm-9:22 pm

2 stops33h 12m

San Francisco

Mon 3/30

4:15 pm-4:20 pm

2 stops44h 05m

$806

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Mon 3/2

3:25 pm-9:22 pm

2 stops34h 57m

San Francisco

Mon 4/27

2:30 pm-4:25 pm

2 stops45h 55m

$806

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Mon 3/2

5:10 pm-9:22 pm

2 stops33h 12m

San Francisco

Wed 3/25

8:30 am-4:30 pm

2 stops28h 00m

$806

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Sun 3/1

1:30 am-11:16 pm

1 stop26h 46m

San Francisco

Tue 3/24

1:54 am-12:25 am

1 stop18h 31m

$849

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Sun 3/1

1:30 am-11:16 pm

1 stop26h 46m

San Francisco

Sun 4/26

1:23 am-12:20 am

1 stop18h 57m

$849

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Fri 3/20

3:25 pm-10:56 pm

2 stops35h 31m

San Francisco

Fri 9/18

5:00 am-2:35 pm

2 stops29h 35m

$861

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Mon 5/4

5:10 pm-12:30 pm

2 stops23h 20m

San Francisco

Tue 5/19

9:30 pm-2:35 pm

2 stops37h 05m

$861

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Thu 4/2

1:35 am-11:40 pm

1 stop26h 05m

$453

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Thu 2/26

1:30 am-11:20 pm

1 stop26h 50m

$462

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Thu 4/2

7:25 am-10:52 am

2 stops31h 27m

$463

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 16 results
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  • Most accurate provider: When it comes to deals on Porto Alegre-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto Alegre-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto Alegre-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto Alegre-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Porto Alegre-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Porto Alegre to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Porto Alegre with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Porto Alegre to San Francisco

What is the cheapest month to book a flight from Porto Alegre to San Francisco?

Currently, May is the cheapest month in which you can book a flight from Porto Alegre to San Francisco (average of $324). Flying from Porto Alegre to San Francisco in January is currently the most expensive (average of $1,793). 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.

Related info for your journey

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

  • How long is the flight from Porto Alegre to San Francisco?

    There are many flights that can get you from Porto Alegre to San Francisco in 33h 12m. Fly via Air Canada to get the fastest option. Porto Alegre and San Francisco are separated by a distance of 6547 mi.

  • Can I find deals for flights from Porto Alegre to San Francisco that include hotel bookings?

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

  • How can I find direct flights from Porto Alegre to San Francisco?

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

  • Can I find deals for business class flights from Porto Alegre to San Francisco?

    Yes. Cheapflights offers flight deals from Porto Alegre to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Porto Alegre to San Francisco?

    Currently, May is the cheapest month in which you can book a flight from Porto Alegre to San Francisco (average of $324). Flying from Porto Alegre to San Francisco in January is currently the most expensive (average of $1,793). 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.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
South San Francisco
Santa Cruz
Roseville
Santa Clara
Livermore
Watsonville
San Bruno
Daly City
Sunnyvale
Vacaville
Turlock
San Carlos
San Ramon
Manteca
Vallejo
San Lorenzo
Davis
Hollister
Redwood City
Union City

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