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Porto Alegre

$320+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — POA
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/26. 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 4/217:00 am
SFO
-
POA
2 stops27h 20m
United Airlines
Thu 4/233:25 pm
POA
-
SFO
2 stops45h 51m
United Airlines
Deal found 1/26$711
This Copa Airlines deal was found by Cheapflights users on 1/27. 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 6/178:06 pm
SFO
-
POA
1 stop24h 14m
Copa Airlines
Sun 6/281:20 am
POA
-
SFO
1 stop26h 20m
Copa Airlines
Deal found 1/27$1,029
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/177:00 am
SFO
-
POA
2 stops31h 15m
LATAM Airlines
Mon 6/297:25 am
POA
-
SFO
2 stops19h 47m
LATAM Airlines
Deal found 1/28$1,063
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2911:05 am
SFO
-
POA
2 stops27h 10m
LATAM Airlines
Mon 7/137:05 pm
POA
-
SFO
2 stops20h 54m
LATAM Airlines
Deal found 1/28$1,174
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:55 am
SFO
-
POA
2 stops29h 20m
LATAM Airlines
Mon 7/137:05 pm
POA
-
SFO
2 stops20h 54m
LATAM Airlines
Deal found 1/28$1,200
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/298:55 am
SFO
-
POA
2 stops29h 20m
LATAM Airlines
Wed 7/157:05 pm
POA
-
SFO
2 stops20h 54m
LATAM Airlines
Deal found 1/28$1,283
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/298:55 am
SFO
-
POA
2 stops29h 20m
LATAM Airlines
Sun 7/127:05 pm
POA
-
SFO
2 stops24h 06m
LATAM Airlines
Deal found 1/28$1,309

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$711
(United Airlines)

One-way from

$320
(United Airlines)

Popular in

September

Cheapest in

August

Average price

$708
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
Search Deals
One-way flight from San Francisco to Porto Alegre Salgado Filho
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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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 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

San Francisco

Fly to

Porto Alegre

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

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

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

8:55 am-6:15 pm

2 stops29h 20m

Porto Alegre Salgado Filho

Sun 7/12

7:05 pm-3:11 pm

2 stops24h 06m

$1,309

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Fri 7/3

8:55 am-6:15 pm

2 stops29h 20m

Porto Alegre Salgado Filho

Sun 7/12

7:05 pm-11:59 am

2 stops20h 54m

$1,335

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 2/11

12:55 pm-6:20 pm

2 stops24h 25m

Porto Alegre Salgado Filho

Sat 2/14

2:20 pm-9:53 am

2 stops24h 33m

$1,353

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 6/30

11:47 am-11:30 am

2 stops19h 43m

Porto Alegre Salgado Filho

Wed 7/15

5:20 am-10:39 pm

2 stops21h 19m

$1,440

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 5/5

10:50 am-4:20 pm

2 stops25h 30m

$320

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sat 4/18

1:23 am-12:20 am

1 stop18h 57m

$335

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sun 4/19

6:33 am-4:20 pm

2 stops29h 47m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 14 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Porto Alegre flight deals on Cheapflights vs. FlightHub >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 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 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.

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 January 29, 2026.
See what other customers who have flown with Copa Airlines and United 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
7.5
Good
1,560 reviews

Comfort

7.4

Crew

8.1

Food

6.8

Overall

7.5

Boarding

7.8

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Maria,Dec 2025

MIA - PTY

The second flight to salta Argentina was terrible..the plain is old no entertainment no good food no nothing
Copa Airlines
7.5
Good
1,560 reviews
Copa Airlines
7.5
Good
1,560 reviews

Comfort

7.4

Crew

8.1

Food

6.8

Overall

7.5

Boarding

7.8

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Maria,Dec 2025

MIA - PTY

The second flight to salta Argentina was terrible..the plain is old no entertainment no good food no nothing
United Airlines
7.4
Good
9,215 reviews
Copa Airlines
7.5
Good
1,560 reviews

Comfort

7.4

Crew

8.1

Food

6.8

Overall

7.5

Boarding

7.8

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Maria,Dec 2025

MIA - PTY

The second flight to salta Argentina was terrible..the plain is old no entertainment no good food no nothing

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 $1,029, United Airlines can have you in Porto Alegre from San Francisco in 24h 14m. 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. Check Cheapflights for deals on United Airlines for as low as $464. You may be able to fly from San Francisco to Porto Alegre for 59% 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

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from San Francisco to Porto Alegre

Discover the top 2 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$345Average$746FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$464Average$694FlexibilityNo cancel feeOn-time69%

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