Cheap Flights from San Francisco International to Porto Alegre

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Find the cheapest month to fly from San Francisco International to Porto Alegre

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Francisco International to Porto Alegre flights are currently cheapest in October.

San Francisco International to Porto Alegre: Alternative routes

Compare routes from San Francisco International to Porto Alegre below. You may find an airport to fly into that's cheaper, faster, or easier than Porto Alegre.

San Francisco to Porto Alegre: Flight information

The things to know before you go.
Cheapest flight foundRs91,710
Cheapest month to flyOctober

Finding cheap flights from San Francisco International to Porto Alegre: Frequently asked questions

The best price we found for a return flight from San Francisco International to Porto Alegre is Rs239,655. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from San Francisco International to Porto Alegre. But we found flights with one or more stops from Rs239,655.
As of October 2025, there are no flights flying from San Francisco International to Porto Alegre.
The cheapest month to fly from San Francisco International to Porto Alegre is usually December.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Francisco International Airport to Porto Alegre Airport on Wednesday, 10 December 2025.
No airlines currently offer direct flights between San Francisco International Airport and Porto Alegre Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Porto Alegre but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Porto Alegre is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Hawaiian Airlines offers the cheapest flight tickets to Porto Alegre.

Travelling from San Francisco International Airport (SFO) to Salgado Filho International Airport (POA): what you need to know

  • The timezone in Porto Alegre is UTC-3, which is four hours ahead of San Francisco.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to catch your SFO to POA flight.

  • During popular months like August, you'll want to get to the airport well in advance. Arrive two hours before a domestic departure and four hours ahead for an international flight whenever you're travelling during a peak period in general.

  • Pick a stopover if you'd love to break up your flight. Simply uncheck 'Direct flights only' to see your options for tickets from San Francisco International Airport to Salgado Filho International Airport. Tocumen International Airport is a top stopover on the SFO to POA route.

How to find the cheapest flights from San Francisco International Airport (SFO) to Salgado Filho International Airport (POA)

  • Rs91,710 is currently the best price for a one-way San Francisco International Airport to Salgado Filho International Airport flight. A return flight starts from Rs239,655. These prices can change based on availability and demand.

  • Don't leave everything to the last moment. You're more likely to get cheap tickets from SFO to POA if you book in advance. Airlines often have some great early bird deals.

  • Finding cheap flights from San Francisco International Airport to Salgado Filho International Airport is more likely if you're flexible with your trip dates. Use the 'Whole month' function to see the lowest prices across the month and score a great deal.

  • Cut down on the time spent looking for cheap flights from SFO to POA by setting up a Price Alert. You'll receive an email or push notification on the app when fares go down.

  • Lock in the right flight for you by using the filters. To see the 'Best,' 'Fastest' or 'Cheapest' flights from San Francisco International Airport to Salgado Filho International Airport, use the 'Sort by' function. You can also filter by airline, departure and arrival times, and journey duration.

Handy information about San Francisco International Airport (SFO)

  • Of all flights departing from San Francisco International Airport, 77.36% arrive as scheduled at their destination.

  • San Francisco International Airport is around 21 kilometres from central San Francisco. If you're catching a cab, ride-sharing or driving from the centre, it'll take you 20 minutes or so to get there, depending on the traffic.

  • The trip on public transport will take about 45 minutes.

  • Taking an early flight from San Francisco International Airport to Salgado Filho International Airport? Avoid the hassle of rushing to the terminal (and sneak in some extra precious sleep) by picking one of these hotels close to SFO:

Arriving at Salgado Filho International Airport (POA)

Getting from Salgado Filho International Airport (POA) to central Porto Alegre

  • Salgado Filho International Airport is approximately 11 kilometres from central Porto Alegre. The drive time takes about 20 minutes.

  • If you're using public transport, expect a journey of roughly 50 minutes.

When to fly to Salgado Filho International Airport (POA)

  • It's time to choose your travel dates for your flight from San Francisco International Airport to Salgado Filho International Airport. June is the busiest month to head to Porto Alegre. If you like a more low-key vibe, go in May.

  • Before locking in your flight from San Francisco International Airport to Salgado Filho International Airport, consider the kind of weather you enjoy. January is the warmest month in Porto Alegre, with the temperature ranging from 17ºC to 34ºC.

  • July has average temperatures of between 8ºC and 23ºC. Search for cheap tickets from SFO to POA sometime around then if you want to travel when it's cooler.

Explore more of Brazil

  • Joinville is just one of the many places in Brazil waiting to be explored once you've seen Porto Alegre. Around 483 kilometres away to the north-east, its top attractions include Rua das Palmeiras, Parque Zoobotanico and Expoville Park.

  • If you want to check out another side of Brazil, head for Florianopolis, roughly 370 kilometres north-east of Porto Alegre. Joaquina beach, Farol da Barra da Lagoa and Hercilio Luz Bridge are the start of reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.