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Porto Alegre

$323+ Cheap flights from San Francisco (SFO) to Porto Alegre (POA)

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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — POA
May 25 — Jun 11
Sun 5/25
Sun 6/1
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 May 20, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$654
(United Airlines)

One-way from

$323
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$910
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. 24% potential increase in price ($295 potential increase over avg. RT price).
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Cheapest flight prices on average. 11% potential price decrease ($95 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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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 May 20, 2025.

This United Airlines deal was found by Cheapflights users on 5/20. 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.
Tue 6/31:00 pmSFO - POA
2 stops23h 50mUnited Airlines
Mon 6/92:05 pmPOA - SFO
3 stops31h 18mUnited Airlines
Deal found 5/20$644
This Copa Airlines deal was found by Cheapflights users on 5/19. 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.
Wed 7/21:25 amSFO - POA
1 stop18h 50mCopa Airlines
Fri 8/11:23 amPOA - SFO
1 stop23h 52mCopa Airlines
Deal found 5/19$717
This Cheapflightsfares deal was found by Cheapflights users on 5/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/211:43 amSFO - POA
2 stops25h 17mLATAM Airlines
Sun 6/810:10 amPOA - SFO
2 stops42h 13mLATAM Airlines
Deal found 5/20$849
This Gurufare deal was found by Cheapflights users on 5/19. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1010:55 amSFO - POA
1 stop33h 20mMultiple Airlines
Tue 7/86:10 amPOA - SFO
2 stops21h 30mMultiple Airlines
Deal found 5/19$860
This American Airlines deal was found by Cheapflights users on 5/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/108:00 amSFO - POA
2 stops22h 25mAmerican Airlines
Tue 7/86:35 pmPOA - SFO
3 stops22h 14mAmerican Airlines
Deal found 5/19$2,376
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/24:20 pmSFO - POA
1 stop25h 25mTAP AIR PORTUGAL
Sat 6/71:40 amPOA - SFO
1 stop40h 50mTAP AIR PORTUGAL
Deal found 5/20$3,174

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 May 20, 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 6/3

9:20 am-4:50 pm

2 stops27h 30m

Porto Alegre Salgado Filho

Mon 6/9

2:00 pm-1:22 pm

2 stops27h 22m

$644

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 7/2

1:25 am-12:15 am

1 stop18h 50m

Porto Alegre Salgado Filho

Fri 8/1

1:23 am-9:15 pm

1 stop23h 52m

$717

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Mon 6/2

11:43 am-5:00 pm

2 stops25h 17m

Porto Alegre Salgado Filho

Sun 6/8

10:10 am-12:23 am

2 stops42h 13m

$849

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 6/10

10:55 am-12:15 am

1 stop33h 20m

Porto Alegre Salgado Filho

Tue 7/8

6:10 am-11:40 pm

2 stops21h 30m

$860

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 6/10

8:00 am-10:25 am

2 stops22h 25m

Porto Alegre Salgado Filho

Tue 7/8

6:35 pm-12:49 pm

3 stops22h 14m

$2,376

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Mon 6/2

4:20 pm-9:45 pm

1 stop25h 25m

Porto Alegre Salgado Filho

Sat 6/7

1:40 am-2:30 pm

1 stop40h 50m

$3,174

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Fri 9/26

1:02 pm-4:10 pm

2 stops23h 08m

$323

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Thu 9/25

1:28 am-9:50 am

2 stops28h 22m

$388

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sat 6/7

12:05 am-12:15 am

2 stops20h 10m

$1,933

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sun 6/8

10:59 pm-5:00 pm

3 stops38h 01m

$5,047

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/18

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 May.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on San Francisco-Porto Alegre flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 May 20, 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 29% on your trip compared to booking a flight at noon.

Rainfall in Porto Alegre by month

Plan your trip to Porto Alegre by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto Alegre ranges from 2.8 - 5.1 inches per month. September is typically the wettest month, when rainfall can reach 5.1 in. November is typically the driest time to visit Porto Alegre when rainfall is around 2.8 in.

Temperature in Porto Alegre by month

Plan your trip to Porto Alegre by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto Alegre, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 55.4 F).

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 May 20, 2025.
LATAM Airlines
7.5
Good
1,780 reviews

Comfort

7.4

Overall

7.5

Entertainment

7.0

Food

6.7

Boarding

7.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

MCO - BOG

The problem was the delayed departure for airport reason I understood it was not a Latam responsibility. The crew could give something to drink and not only a candy.
LATAM Airlines
7.5
Good
1,780 reviews
LATAM Airlines
7.5
Good
1,780 reviews

Comfort

7.4

Overall

7.5

Entertainment

7.0

Food

6.7

Boarding

7.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

MCO - BOG

The problem was the delayed departure for airport reason I understood it was not a Latam responsibility. The crew could give something to drink and not only a candy.
Copa Airlines
7.5
Good
1,428 reviews
LATAM Airlines
7.5
Good
1,780 reviews

Comfort

7.4

Overall

7.5

Entertainment

7.0

Food

6.7

Boarding

7.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

MCO - BOG

The problem was the delayed departure for airport reason I understood it was not a Latam responsibility. The crew could give something to drink and not only a candy.
United Airlines
7.4
Good
8,744 reviews
LATAM Airlines
7.5
Good
1,780 reviews

Comfort

7.4

Overall

7.5

Entertainment

7.0

Food

6.7

Boarding

7.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

MCO - BOG

The problem was the delayed departure for airport reason I understood it was not a Latam responsibility. The crew could give something to drink and not only a candy.
American Airlines
7.2
Good
10,000 reviews
LATAM Airlines
7.5
Good
1,780 reviews

Comfort

7.4

Overall

7.5

Entertainment

7.0

Food

6.7

Boarding

7.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

MCO - BOG

The problem was the delayed departure for airport reason I understood it was not a Latam responsibility. The crew could give something to drink and not only a candy.

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.

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

    Currently priced at $654, United Airlines will fly you from San Francisco to Porto Alegre and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Copa Airlines and LATAM Airlines - these airlines can fly you to your destination from $717 and $996, respectively. You may be able to fly from San Francisco to Porto Alegre for 28% less than the average price by searching for these airlines.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $323. Copa Airlines flights start at $2,071 while deals on LATAM Airlines start at $5,047 one-way.

  • 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 May 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$345Average$790FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$578Average$1,543FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$643Average$694FlexibilityNo cancel feeOn-time69%

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