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Porto Alegre

$305+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — POA
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$682
(United Airlines)

One-way from

$305
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,337
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. 23% potential increase in price ($284 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($77 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 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 September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 10/46:30 amSFO - POA
2 stops28h 00mUnited Airlines
Tue 10/285:10 pmPOA - SFO
2 stops26h 25mUnited Airlines
Deal found 9/14$682
This Copa Airlines deal was found by Cheapflights users on 9/15. 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.
Fri 9/191:30 amSFO - POA
1 stop18h 50mCopa Airlines
Fri 9/261:25 amPOA - SFO
1 stop26h 00mCopa Airlines
Deal found 9/15$686
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sun 10/511:59 pmSFO - POA
2 stops34h 36mUnited Airlines
Fri 10/313:25 pmPOA - SFO
2 stops24h 04mUnited Airlines
Deal found 9/14$692
This Copa Airlines deal was found by Cheapflights users on 9/14. 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 10/61:31 amSFO - POA
1 stop18h 49mCopa Airlines
Mon 10/271:30 amPOA - SFO
1 stop26h 09mCopa Airlines
Deal found 9/14$726
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Sat 10/41:31 amSFO - POA
1 stop18h 49mMultiple Airlines
Mon 10/271:30 amPOA - SFO
2 stops23h 35mMultiple Airlines
Deal found 9/14$752
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Sat 10/41:31 amSFO - POA
1 stop18h 49mMultiple Airlines
Sun 10/261:30 amPOA - SFO
2 stops34h 04mMultiple Airlines
Deal found 9/14$765
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Sat 10/41:31 amSFO - POA
1 stop18h 49mMultiple Airlines
Fri 10/241:25 amPOA - SFO
2 stops19h 42mMultiple Airlines
Deal found 9/14$790
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 11/111:59 pmSFO - POA
2 stops36h 21mUnited Airlines
Sat 11/153:45 pmPOA - SFO
2 stops23h 10mUnited Airlines
Deal found 9/14$803
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Thu 10/95:00 amSFO - POA
2 stops31h 10mUnited Airlines
Mon 10/275:10 pmPOA - SFO
2 stops30h 15mUnited Airlines
Deal found 9/14$807
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Sat 10/41:31 amSFO - POA
1 stop18h 49mMultiple Airlines
Thu 10/305:05 amPOA - SFO
2 stops22h 34mMultiple Airlines
Deal found 9/14$810
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Sat 10/46:00 amSFO - POA
2 stops38h 20mMultiple Airlines
Tue 10/281:30 amPOA - SFO
1 stop26h 09mMultiple Airlines
Deal found 9/14$816
This United Airlines deal was found by Cheapflights users on 9/14. 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 9/1912:43 amSFO - POA
2 stops33h 47mUnited Airlines
Sat 9/273:45 pmPOA - SFO
2 stops30h 01mUnited Airlines
Deal found 9/14$817

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 September 15, 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

Mon 10/6

5:00 am-4:10 pm

2 stops31h 10m

Porto Alegre Salgado Filho

Fri 10/31

3:25 pm-12:10 pm

2 stops24h 45m

$682

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sat 10/4

7:00 am-2:30 pm

2 stops27h 30m

Porto Alegre Salgado Filho

Wed 10/29

5:10 pm-11:56 am

2 stops22h 46m

$682

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 10/8

5:15 am-2:35 pm

2 stops29h 20m

Porto Alegre Salgado Filho

Mon 10/27

5:10 pm-6:34 pm

2 stops29h 24m

$682

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 10/7

5:00 am-2:35 pm

2 stops29h 35m

Porto Alegre Salgado Filho

Thu 10/30

2:05 pm-4:47 pm

2 stops30h 42m

$682

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Mon 10/6

5:00 am-2:35 pm

2 stops29h 35m

Porto Alegre Salgado Filho

Tue 10/28

5:10 pm-8:08 pm

2 stops30h 58m

$682

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 10/8

5:15 am-6:20 pm

2 stops33h 05m

Porto Alegre Salgado Filho

Tue 10/28

5:10 pm-3:35 pm

2 stops26h 25m

$682

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 10/7

5:00 am-4:10 pm

2 stops31h 10m

Porto Alegre Salgado Filho

Mon 10/27

5:10 pm-5:47 pm

2 stops28h 37m

$682

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Mon 10/6

5:00 am-2:35 pm

2 stops29h 35m

Porto Alegre Salgado Filho

Mon 10/27

3:25 pm-5:47 pm

2 stops30h 22m

$682

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 10/8

5:15 am-6:20 pm

2 stops33h 05m

Porto Alegre Salgado Filho

Thu 10/30

2:05 pm-11:56 am

2 stops25h 51m

$682

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 10/8

5:15 am-6:20 pm

2 stops33h 05m

Porto Alegre Salgado Filho

Wed 10/29

5:10 pm-3:35 pm

2 stops26h 25m

$682

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 22 results
1
2
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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 September 15, 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.

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 September 15, 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
1,531 reviews

Comfort

7.4

Entertainment

6.8

Food

6.8

Overall

7.6

Crew

8.1

Boarding

7.8

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
1,531 reviews
Copa Airlines
7.6
Good
1,531 reviews

Comfort

7.4

Entertainment

6.8

Food

6.8

Overall

7.6

Crew

8.1

Boarding

7.8

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
8,929 reviews
Copa Airlines
7.6
Good
1,531 reviews

Comfort

7.4

Entertainment

6.8

Food

6.8

Overall

7.6

Crew

8.1

Boarding

7.8

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
10,000 reviews
Copa Airlines
7.6
Good
1,531 reviews

Comfort

7.4

Entertainment

6.8

Food

6.8

Overall

7.6

Crew

8.1

Boarding

7.8

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 $682, United Airlines can have you in Porto Alegre from San Francisco in 31h 10m. The distance between San Francisco and Porto Alegre is about 6547 mi.

  • 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 62% 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$345Average$746FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$578Average$1,591FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$643Average$694FlexibilityNo cancel feeOn-time69%

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