Cheap flights from San Francisco to Porto Alegre from $665
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Porto Alegre departing on 5/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from San Francisco to Porto Alegre
Cheap round-trip flights
Cheap one-way flights
United Airlines flights from San Francisco to Porto Alegre
Our best United Airlines deals on San Francisco to Porto Alegre flight tickets
Copa Airlines flights from San Francisco to Porto Alegre
Our best Copa Airlines deals on San Francisco to Porto Alegre flight tickets
See travel insights to Porto Alegre from
How to get the cheapest flight ticket from San Francisco to Porto Alegre
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Porto Alegre?
Our data shows that Wednesday is the least expensive day to fly to Porto Alegre. Tickets to fly out on this day can be as low as $864. On the other hand, Saturday is the most expensive day to depart from San Francisco because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,543.
What is the cheapest time of day to depart on your flight to Porto Alegre?
Our most recent data shows that the best time of day to fly to Porto Alegre is in the evening. Flights from San Francisco to Porto Alegre during this time can be as low as $1,020. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,422 on average. Flights to Porto Alegre from San Francisco at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
When to book flights from San Francisco to Porto Alegre
Cheap San Francisco to Porto Alegre (SFO to POA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco to Porto Alegre
How far is San Francisco to Porto Alegre Salgado Filho by plane?
The straight-line distance from San Francisco to Porto Alegre Salgado Filho is 6555.1 mi. By plane, this route typically takes 18h 38m.
When did momondo last update prices for flights from San Francisco Airport to Porto Alegre Salgado Filho Airport?
Prices for flights from San Francisco Airport to Porto Alegre Salgado Filho Airport are refreshed on a daily basis.
How many operators does momondo search for flights from San Francisco Airport to Porto Alegre Salgado Filho Airport?
As of March 2025, there are 2 operators available to choose from for flights from San Francisco Airport to Porto Alegre Salgado Filho Airport.
How old do you have to be to fly from San Francisco Airport to Porto Alegre Salgado Filho Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Porto Alegre Salgado Filho Airport.
What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?
The travel and health documents required for your trip to Porto Alegre Salgado Filho Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Alegre Salgado Filho Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from San Francisco to Porto Alegre?
momondo data reveals that the most frequently booked airline on the route from San Francisco to Porto Alegre is American Airlines, representing 63% of all bookings. The subsequent popular airline is Copa Airlines at 37%.
Best airlines flying from San Francisco to Porto Alegre
Compare and see reviews for airlines that fly from San Francisco to Porto Alegre with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $578 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $712 | Free Cancellation | Rating 7.6 1,393 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from San Francisco to Porto Alegre?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Francisco to Porto Alegre. momondo saves you time and could save you money on your trip.
Can I find flights from San Francisco to Porto Alegre with flexible booking policies on momondo?
Flights from San Francisco to Porto Alegre with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from San Francisco to Porto Alegre?
momondo helps you find the best flight between San Francisco and Porto Alegre by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from San Francisco to Porto Alegre right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Porto Alegre, momondo offers a useful price alert feature which will track prices for flights to Porto Alegre from San Francisco and alert you when they change.