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$450+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
POA — SFO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 September 17, 2025.

Round-trip from

$816
(123 Milhas)

One-way from

$450
(LATAM Airlines)

Popular in

December

Cheapest in

March

Average price

$835
From Porto Alegre Salgado Filho to San Francisco
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One-way flight from Porto Alegre Salgado Filho to San Francisco
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Highest demand for flights based on searches. 5% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 17, 2025.

This 123 Milhas deal was found by Cheapflights users on 9/16. 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 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:50 pmPOA - SFO
2 stops24h 50mLATAM Airlines
Fri 11/710:40 amSFO - POA
2 stops25h 20mLATAM Airlines
Deal found 9/16$816
This American Airlines deal was found by Cheapflights users on 9/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:55 pmPOA - SFO
2 stops22h 11mAmerican Airlines
Fri 1/912:20 pmSFO - POA
2 stops24h 20mAmerican Airlines
Deal found 9/16$996
This Copa Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 10/301:30 amPOA - SFO
1 stop26h 09mCopa Airlines
Thu 11/612:36 amSFO - POA
1 stop18h 54mCopa Airlines
Deal found 9/16$997
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 12/103:25 pmPOA - SFO
2 stops37h 34mUnited Airlines
Thu 1/812:43 amSFO - POA
2 stops33h 22mUnited Airlines
Deal found 9/16$1,059
This GOL deal was found by Cheapflights users on 9/16. 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 GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:40 amPOA - SFO
2 stops29h 09mGOL
Fri 1/910:19 amSFO - POA
2 stops26h 21mGOL
Deal found 9/16$1,141
This Copa Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 12/91:35 amPOA - SFO
1 stop23h 54mCopa Airlines
Thu 1/812:42 amSFO - POA
1 stop18h 48mCopa Airlines
Deal found 9/16$2,127

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 September 17, 2025.
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

Fri 10/31

2:50 pm-11:40 am

2 stops24h 50m

San Francisco

Fri 11/7

10:40 am-5:00 pm

2 stops25h 20m

$816

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Mon 2/2

3:25 pm-5:17 pm

2 stops30h 52m

San Francisco

Mon 2/9

5:00 am-4:10 pm

2 stops30h 10m

$839

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Thu 3/5

5:55 pm-11:45 am

2 stops22h 50m

San Francisco

Sat 3/14

8:16 am-10:30 am

2 stops22h 14m

$924

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Tue 1/27

6:05 pm-11:58 am

2 stops22h 53m

San Francisco

Tue 2/3

7:25 am-11:00 am

2 stops22h 35m

$941

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Wed 2/18

5:10 pm-11:43 am

2 stops23h 33m

San Francisco

Sun 2/22

7:15 am-2:35 pm

2 stops26h 20m

$974

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Sun 2/1

1:30 am-11:20 pm

1 stop26h 50m

San Francisco

Sun 2/8

12:42 am-12:25 am

1 stop18h 43m

$986

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Wed 12/10

5:55 pm-11:06 am

2 stops22h 11m

San Francisco

Fri 1/9

12:20 pm-5:40 pm

2 stops24h 20m

$996

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Wed 12/10

3:25 pm-11:59 pm

2 stops37h 34m

San Francisco

Thu 1/8

12:43 am-3:05 pm

2 stops33h 22m

$1,059

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Tue 2/17

1:30 am-11:20 pm

1 stop26h 50m

San Francisco

Sat 2/21

12:42 am-12:25 am

1 stop18h 43m

$1,144

Porto AlegreSan Francisco

POA - SFO

POASFO

Porto Alegre Salgado Filho

Sat 11/15

7:45 am-11:58 pm

2 stops21h 13m

$450

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 14 results
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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, January is the cheapest month in which you can book a flight from Porto Alegre to San Francisco (average of $276). Flying from Porto Alegre to San Francisco in June is currently the most expensive (average of $357). 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 22h 50m. Fly via LATAM Airlines, United Airlines, or American Airlines to get the fastest option. Porto Alegre and San Francisco are separated by a distance of 6547 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Porto Alegre to San Francisco one-way?

    The cheapest airlines for a one-way flight from Porto Alegre to San Francisco are LATAM Airlines ($450), Copa Airlines ($1,274), and Aeromexico ($2,097).

  • 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, January is the cheapest month in which you can book a flight from Porto Alegre to San Francisco (average of $276). Flying from Porto Alegre to San Francisco in June is currently the most expensive (average of $357). 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
Roseville
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Turlock
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Santa Clara
Manteca
Sunnyvale
Hollister
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Foster City
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San Mateo
San Leandro
Lathrop

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