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Porto Alegre

$656+ Cheap flights from San Francisco (SFO) to Porto Alegre (POA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — POA
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from San Francisco to Porto Alegre

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Porto Alegre (POA). 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$651
(LATAM Airlines)

One-way from

$334
(United Airlines)

Popular in

December

Cheapest in

August
Provider with most accurate pricing for San Francisco-Porto Alegre Salgado Filho flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Porto Alegre Salgado Filho flights.
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From San Francisco to Porto Alegre Salgado Filho
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One-way flight from San Francisco to Porto Alegre Salgado Filho
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Highest demand for flights based on searches. 21% potential increase in price ($263 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($82 potential savings vs. average RT price).
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Find flight deals from San Francisco to Porto Alegre

Cheapest flights from San Francisco to Porto Alegre
Explore the most affordable flight options available from San Francisco to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This United Airlines deal was found by Cheapflights users on 10/29. 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.
Tue 11/115:10 amSFO - POA
2 stops24h 55mUnited Airlines
Tue 11/183:25 pmPOA - SFO
2 stops33h 43mUnited Airlines
Deal found 10/29$683
This Ovago deal was found by Cheapflights users on 10/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1111:09 amSFO - POA
2 stops25h 46mLATAM Airlines
Mon 11/174:40 amPOA - SFO
2 stops34h 15mLATAM Airlines
Deal found 10/29$909

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from San Francisco to Porto Alegre that are best for you.

Fly from

San Francisco

Fly to

Porto Alegre

Route

Depart

Return

Price

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 3/24

7:30 am-11:35 am

2 stops24h 05m

Porto Alegre Salgado Filho

Thu 3/26

7:45 am-10:35 am

2 stops30h 50m

$656

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 11/11

5:10 am-11:05 am

2 stops24h 55m

Porto Alegre Salgado Filho

Tue 11/18

3:25 pm-8:08 pm

2 stops33h 43m

$683

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Mon 3/23

1:54 am-12:25 am

1 stop18h 31m

Porto Alegre Salgado Filho

Wed 3/25

1:30 am-11:40 pm

1 stop26h 10m

$810

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 11/11

11:09 am-5:55 pm

2 stops25h 46m

Porto Alegre Salgado Filho

Mon 11/17

4:40 am-9:55 am

2 stops34h 15m

$909

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sun 3/15

6:00 am-6:30 am

2 stops20h 30m

Porto Alegre Salgado Filho

Tue 3/31

6:40 am-12:01 pm

3 stops33h 21m

$3,921

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sat 3/14

1:54 am-12:25 am

1 stop18h 31m

Porto Alegre Salgado Filho

Mon 3/30

1:30 am-11:40 pm

1 stop26h 10m

$5,207

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Compare providers for flights from San Francisco to Porto Alegre

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Porto Alegre in October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Porto Alegre flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Francisco-Porto Alegre flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Francisco-Porto Alegre flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Porto Alegre flights, Cheapflights users trust eDreams the most. eDreams 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 San Francisco-Porto Alegre 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 San Francisco to Porto Alegre

Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from San Francisco 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 San Francisco to Porto Alegre

What is the cheapest time of day to fly from SFO to POA?

Find hourly flight availability from San Francisco to Porto Alegre. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Porto Alegre in the afternoon. If you’re flexible enough to do this you can expect to save up to 31% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Porto Alegre

Get insights into the airlines that provide service to Porto Alegre. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto Alegre. Reviews last updated October 30, 2025.
See what other customers who have flown with Copa Airlines, United Airlines, and American Airlines from San Francisco to Porto Alegre have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.6
Good
1,563 reviews

Comfort

7.4

Entertainment

6.8

Crew

8.1

Overall

7.6

Boarding

7.8

Food

6.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
Copa Airlines
7.6
Good
1,563 reviews
Copa Airlines
7.6
Good
1,563 reviews

Comfort

7.4

Entertainment

6.8

Crew

8.1

Overall

7.6

Boarding

7.8

Food

6.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
United Airlines
7.4
Good
8,998 reviews
Copa Airlines
7.6
Good
1,563 reviews

Comfort

7.4

Entertainment

6.8

Crew

8.1

Overall

7.6

Boarding

7.8

Food

6.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
American Airlines
7.2
Good
11,030 reviews
Copa Airlines
7.6
Good
1,563 reviews

Comfort

7.4

Entertainment

6.8

Crew

8.1

Overall

7.6

Boarding

7.8

Food

6.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Porto Alegre. 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 San Francisco to Porto Alegre?

    For as low as $810, LATAM Airlines can have you in Porto Alegre from San Francisco in 18h 31m. The distance between San Francisco and Porto Alegre is about 6547 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from San Francisco to Porto Alegre round-trip?

    Currently priced at $345, Copa Airlines will fly you from San Francisco to Porto Alegre and back. In addition to Copa Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $578 and $643, respectively. You may be able to fly from San Francisco to Porto Alegre for 63% less than the average price by searching for these airlines.

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

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

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

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

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

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

See more FAQs

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Top 3 airlines flying from San Francisco to Porto Alegre

Discover the top 3 airlines that operate flights from San Francisco to Porto Alegre. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$345Average$746FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$578Average$1,677FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$643Average$708FlexibilityNo cancel feeOn-time69%

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