How long is the flight from San Francisco to Porto Alegre?

For as low as $787, United Airlines can have you in Porto Alegre from San Francisco in 22h 55m. 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 60% less than the average price by searching for these airlines.

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.

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).

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.

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.

$330+ Flights from San Francisco to Porto Alegre

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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 diciembre 15, 2025.

jue. 12/188:25 amSFO - POA

2 stops27h 35mLATAM Airlines

jue. 12/2510:05 amPOA - SFO

2 stops40h 11mLATAM Airlines

Deal found 12/15

$1,748

Best flights from San Francisco to Porto Alegre
Discover carefully curated flight deals from San Francisco to Porto Alegre that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 15, 2025.

mar. 1/276:45 amSFO - POA

2 stops22h 55mUnited Airlines

mar. 2/36:10 pmPOA - SFO

2 stops22h 28mUnited Airlines

Deal found 12/13

$787

mar. 3/178:25 amSFO - POA

2 stops25h 55mAir Canada

mié. 3/185:10 pmPOA - SFO

2 stops32h 12mAir Canada

Deal found 12/13

$930

mar. 1/69:30 pmSFO - POA

2 stops28h 00mLATAM Airlines

lun. 1/267:45 amPOA - SFO

2 stops21h 11mLATAM Airlines

Deal found 12/13

$2,561

mié. 1/76:00 amSFO - POA

2 stops19h 30mLATAM Airlines

lun. 1/267:45 amPOA - SFO

2 stops21h 11mLATAM Airlines

Deal found 12/13

$2,561

jue. 1/89:30 pmSFO - POA

2 stops28h 00mLATAM Airlines

lun. 1/267:45 amPOA - SFO

2 stops21h 11mLATAM Airlines

Deal found 12/13

$2,603

vie. 1/26:00 amSFO - POA

2 stops19h 30mLATAM Airlines

lun. 1/267:45 amPOA - SFO

2 stops21h 11mLATAM Airlines

Deal found 12/13

$2,623

sáb. 1/311:45 pmSFO - POA

2 stops25h 45mLATAM Airlines

lun. 1/267:45 amPOA - SFO

2 stops21h 11mLATAM Airlines

Deal found 12/13

$2,690

mar. 1/69:30 pmSFO - POA

2 stops28h 00mLATAM Airlines

sáb. 1/247:45 amPOA - SFO

2 stops19h 32mLATAM Airlines

Deal found 12/13

$2,712

mié. 1/76:00 amSFO - POA

2 stops19h 30mLATAM Airlines

sáb. 1/247:45 amPOA - SFO

2 stops19h 32mLATAM Airlines

Deal found 12/13

$2,712

jue. 1/89:30 pmSFO - POA

2 stops28h 00mLATAM Airlines

sáb. 1/247:45 amPOA - SFO

2 stops19h 32mLATAM Airlines

Deal found 12/13

$2,754

mié. 1/76:00 amSFO - POA

2 stops19h 30mLATAM Airlines

mié. 1/286:00 pmPOA - SFO

2 stops23h 55mLATAM Airlines

Deal found 12/13

$2,782

Last-minute flights from San Francisco to Porto Alegre
Discover last-minute flight deals from San Francisco to Porto Alegre. Data last updated diciembre 15, 2025 and is based on user searches.

vie. 1/26:00 amSFO - POA

2 stops19h 30mLATAM Airlines

lun. 1/267:45 amPOA - SFO

2 stops21h 11mLATAM Airlines

Deal found 12/13

$2,623

vie. 1/26:00 amSFO - POA

2 stops19h 30mLATAM Airlines

sáb. 1/247:45 amPOA - SFO

2 stops19h 32mLATAM Airlines

Deal found 12/13

$2,774

sáb. 1/311:45 pmSFO - POA

2 stops25h 45mLATAM Airlines

lun. 1/267:45 amPOA - SFO

2 stops21h 11mLATAM Airlines

Deal found 12/13

$2,690

lun. 1/56:00 amSFO - POA

2 stops24h 35mLATAM Airlines

lun. 1/267:45 amPOA - SFO

2 stops21h 11mLATAM Airlines

Deal found 12/13

$2,724

mar. 1/69:30 pmSFO - POA

2 stops28h 00mLATAM Airlines

lun. 1/267:45 amPOA - SFO

2 stops21h 11mLATAM Airlines

Deal found 12/13

$2,561

mar. 1/69:30 pmSFO - POA

2 stops28h 00mLATAM Airlines

sáb. 1/247:45 amPOA - SFO

2 stops19h 32mLATAM Airlines

Deal found 12/13

$2,712

mar. 1/69:30 pmSFO - POA

2 stops28h 00mLATAM Airlines

vie. 1/306:00 pmPOA - SFO

2 stops21h 36mLATAM Airlines

Deal found 12/13

$2,757

mar. 1/69:30 pmSFO - POA

2 stops28h 00mLATAM Airlines

mié. 1/286:00 pmPOA - SFO

2 stops23h 55mLATAM Airlines

Deal found 12/13

$2,782

jue. 1/89:30 pmSFO - POA

2 stops28h 00mLATAM Airlines

lun. 1/267:45 amPOA - SFO

2 stops21h 11mLATAM Airlines

Deal found 12/13

$2,603

jue. 1/89:30 pmSFO - POA

2 stops28h 00mLATAM Airlines

sáb. 1/247:45 amPOA - SFO

2 stops19h 32mLATAM Airlines

Deal found 12/13

$2,754

jue. 1/89:30 pmSFO - POA

2 stops28h 00mLATAM Airlines

vie. 1/306:00 pmPOA - SFO

2 stops21h 36mLATAM Airlines

Deal found 12/13

$2,799

mar. 1/276:45 amSFO - POA

2 stops22h 55mUnited Airlines

mar. 2/36:10 pmPOA - SFO

2 stops22h 28mUnited Airlines

Deal found 12/13

$787

One-way flights from San Francisco to Porto Alegre
Search for one-way flight options from San Francisco to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated diciembre 15, 2025.

dom. 5/247:10 pmSFO - POA

2 stops41h 10mUnited Airlines

Deal found 12/14

$330

sáb. 5/1612:45 amSFO - POA

2 stops35h 35mUnited Airlines

Deal found 12/15

$364

lun. 1/1210:41 amSFO - POA

3 stops56h 59mMultiple Airlines

Deal found 12/13

$384

lun. 1/125:55 amSFO - POA

2 stops22h 25mLATAM Airlines

Deal found 12/13

$414

lun. 1/59:30 pmSFO - POA

3 stops45h 25mMultiple Airlines

Deal found 12/13

$584

sáb. 5/161:12 amSFO - POA

1 stop19h 08mCopa Airlines

Deal found 12/15

$585

lun. 1/56:00 amSFO - POA

2 stops31h 15mUnited Airlines

Deal found 12/14

$627

lun. 1/58:49 amSFO - POA

2 stops42h 51mGOL

Deal found 12/13

$635

lun. 12/226:00 amSFO - POA

3 stops37h 30mMultiple Airlines

Deal found 12/13

$757

lun. 12/222:03 pmSFO - POA

2 stops46h 42mAmerican Airlines

Deal found 12/13

$847

dom. 1/412:42 amSFO - POA

1 stop18h 48mCopa Airlines

Deal found 12/14

$931

Find flight deals from San Francisco to Porto Alegre

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$787 (United Airlines)
One-way from	$330 (United Airlines)
Popular in	September
Cheapest in	August
Average price	$1,210

Provider with most accurate pricing for San Francisco-Porto Alegre Salgado Filho flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Francisco-Porto Alegre Salgado Filho flights.

Search Deals

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. 12% potential increase in price ($122 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($47 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

mar. 1/27

6:45 am-10:40 am

2 stops22h 55m

Porto Alegre Salgado Filho

mar. 2/3

6:10 pm-11:38 am

2 stops22h 28m

$787

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

mar. 3/17

8:25 am-2:20 pm

2 stops25h 55m

Porto Alegre Salgado Filho

mié. 3/18

5:10 pm-9:22 pm

2 stops32h 12m

$930

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

mar. 1/6

9:30 pm-6:30 am

2 stops28h 00m

Porto Alegre Salgado Filho

lun. 1/26

7:45 am-11:56 pm

2 stops21h 11m

$2,561

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

mié. 1/7

6:00 am-6:30 am

2 stops19h 30m

Porto Alegre Salgado Filho

lun. 1/26

7:45 am-11:56 pm

2 stops21h 11m

$2,561

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

jue. 1/8

9:30 pm-6:30 am

2 stops28h 00m

Porto Alegre Salgado Filho

lun. 1/26

7:45 am-11:56 pm

2 stops21h 11m

$2,603

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

vie. 1/2

6:00 am-6:30 am

2 stops19h 30m

Porto Alegre Salgado Filho

lun. 1/26

7:45 am-11:56 pm

2 stops21h 11m

$2,623

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

sáb. 1/3

11:45 pm-6:30 am

2 stops25h 45m

Porto Alegre Salgado Filho

lun. 1/26

7:45 am-11:56 pm

2 stops21h 11m

$2,690

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

mar. 1/6

9:30 pm-6:30 am

2 stops28h 00m

Porto Alegre Salgado Filho

sáb. 1/24

7:45 am-10:17 pm

2 stops19h 32m

$2,712

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

mié. 1/7

6:00 am-6:30 am

2 stops19h 30m

Porto Alegre Salgado Filho

sáb. 1/24

7:45 am-10:17 pm

2 stops19h 32m

$2,712

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

jue. 1/8

9:30 pm-6:30 am

2 stops28h 00m

Porto Alegre Salgado Filho

sáb. 1/24

7:45 am-10:17 pm

2 stops19h 32m

$2,754

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 19 results

Compare providers for flights from San Francisco to Porto Alegre

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 December.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
Ovago	Price Accuracy2 stars	Trust Score*2 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 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?

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

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

7.6

Good

1,557 reviews

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

1,557 reviews

Copa Airlines

7.6

Good

1,557 reviews

Reviews

1 / 20

4.0

Okay

Juan Pablo,Sep 2025

PTY - VVI

United Airlines

7.4

Good

9,092 reviews

Copa Airlines

7.6

Good

1,557 reviews

Reviews

1 / 20

4.0

Okay

Juan Pablo,Sep 2025

PTY - VVI

Related info for your journey

How long is the flight from San Francisco to Porto Alegre?
For as low as $787, United Airlines can have you in Porto Alegre from San Francisco in 22h 55m. 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 60% 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 2 airlines flying from San Francisco to Porto Alegre

Airline	Cheapest	Average	Flexibility	On-time
Copa Airlines	Cheapest$345	Average$746	FlexibilityNo cancel fee	On-time70%
United Airlines	Cheapest$643	Average$697	FlexibilityNo cancel fee	On-time69%

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$330+ 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.

Find cheap flights from San Francisco to Porto Alegre with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Francisco to Porto Alegre

Cheapest flights from San Francisco to Porto AlegreExplore 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 diciembre 15, 2025.

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 diciembre 15, 2025.

Find flight deals from San Francisco to Porto Alegre

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Porto Alegre that are best for you.

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 December.

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.

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?

Reviews of airlines servicing Porto Alegre

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.

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?

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

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

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

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

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.

Alternative routes for San Francisco to Porto Alegre

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from San Francisco to Porto Alegre

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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 diciembre 15, 2025.