SFO - POA

$771 Find Cheap Flights from San Francisco to Porto Alegre

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Porto Alegre departing on 8/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto Alegre

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Porto Alegre, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Porto Alegre, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$771
American Airlines
Fri 8/28Thu 9/24
SFO - POA • 2 stops
Cheapest one-way
$1,394
Multiple Airlines
Thu 5/28
SFO - POA • 3 stops
Top airlines
American Airlines
Cheapest • from $771 (round-trip)
Copa Airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San Francisco and Porto Alegre. You'll need at least 1 connection.
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto Alegre!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Francisco to Porto Alegre (SFO-POA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Porto Alegre that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Porto Alegre

Fri, Aug 28 - Thu, Sep 24
American Airlines Logo
8:00 am - 10:35 am
SFO
-
POA
22h 35m
2 stops
American Airlines Logo
6:25 pm - 2:59 pm
POA
-
SFO
24h 34m
2 stops
$771American Airlines
Tue, May 5 - Sun, May 31
LATAM Airlines Logo
11:57 pm - 6:15 am
SFO
-
POA
26h 18m
2 stops
LATAM Airlines Logo
7:05 pm - 10:53 am
POA
-
SFO
19h 48m
2 stops
$831LATAM Airlines
Tue, May 5 - Thu, May 28
LATAM Airlines Logo
11:57 pm - 6:15 am
SFO
-
POA
26h 18m
2 stops
LATAM Airlines Logo
5:50 pm - 1:36 pm
POA
-
SFO
23h 46m
2 stops
$834LATAM Airlines
Fri, May 1 - Sun, May 31
Delta Logo
8:00 am - 11:15 am
SFO
-
POA
23h 15m
2 stops
Delta Logo
7:05 pm - 1:36 pm
POA
-
SFO
22h 31m
2 stops
$838Delta
Fri, May 1 - Tue, Jun 2
Delta Logo
8:00 am - 11:15 am
SFO
-
POA
23h 15m
2 stops
Delta Logo
5:50 pm - 7:20 pm
POA
-
SFO
29h 30m
2 stops
$840Delta
Sat, May 2 - Thu, May 28
United Airlines Logo
4:55 pm - 2:20 pm
SFO
-
POA
41h 25m
2 stops
United Airlines Logo
2:05 pm - 12:15 am
POA
-
SFO
38h 10m
2 stops
$843United Airlines
Sat, May 2 - Mon, Jun 1
United Airlines Logo
4:55 pm - 2:20 pm
SFO
-
POA
41h 25m
2 stops
United Airlines Logo
3:25 pm - 12:15 am
POA
-
SFO
36h 50m
2 stops
$859United Airlines
Sun, May 3 - Mon, Jun 1
United Airlines Logo
12:45 am - 2:05 pm
SFO
-
POA
33h 20m
2 stops
United Airlines Logo
3:25 pm - 12:15 am
POA
-
SFO
36h 50m
2 stops
$874United Airlines
Tue, May 5 - Mon, Jun 1
United Airlines Logo
11:05 pm - 3:15 pm
SFO
-
POA
36h 10m
2 stops
United Airlines Logo
3:25 pm - 12:15 am
POA
-
SFO
36h 50m
2 stops
$876United Airlines
Thu, Apr 23 - Tue, May 12
Copa Airlines Logo
1:23 am - 12:20 am
SFO
-
POA
18h 57m
1 stop
Copa Airlines Logo
1:20 am - 6:14 pm
POA
-
SFO
20h 54m
1 stop
$889Copa Airlines
Booking Insights

KAYAK's insights & trends for San Francisco to Porto Alegre flights

Get data-powered insights and trends into flights from San Francisco to Porto Alegre to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from San Francisco to Porto Alegre?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from San Francisco to Porto Alegre were found on American Airlines ($771) and LATAM Airlines ($831).

Find deals

Good to know

Low seasonAugust
Cheapest flight$771
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from San Francisco to Porto Alegre

When to book flights from San Francisco to Porto Alegre

Are your dates flexible? Find out the best times to travel from San Francisco to Porto Alegre based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to Porto Alegre

  • What is the cheapest flight from San Francisco to Porto Alegre?

    In the last 3 days, the lowest price for a flight from San Francisco to Porto Alegre was $1,394 for a one-way ticket and $771 for a round-trip.

  • Do I need a passport to fly between San Francisco and Porto Alegre?

    Yes, you'll most likely have to show a valid passport before boarding the plane in San Francisco and on arrival in Porto Alegre.

  • Which airports will I be using when flying from San Francisco to Porto Alegre?

    When flying out of San Francisco you will be using San Francisco. You will be landing at Porto Alegre, also known as Porto Alegre Salgado Filho.

  • Which aircraft models fly most regularly from San Francisco to Porto Alegre?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Francisco to Porto Alegre?

    Star Alliance is the only airline alliance operating flights between San Francisco and Porto Alegre.

  • How does KAYAK find such low prices on flights from San Francisco to Porto Alegre?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Porto Alegre.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Porto Alegre?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto Alegre from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Porto Alegre?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto Alegre with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and POA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Porto Alegre?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto Alegre from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from San Francisco to Porto Alegre

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Porto Alegre. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Porto Alegre? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Copa AirlinesOverall score based on 1572 reviews
6.8Entertainment
6.8Food
7.4Comfort
7.8Boarding
8.1Crew
Airline reviews

Horrible. No TV or any type of entertainment on board. Passwnger listening to/watching stuff on their own phone with no headphones making it noise and uncomfortable for everyone else, little/tiny food portions, old seats, useless wifi (cant access anything). Horrible exlerience especially it was a lomg distance flight with kids.

2.0 MediocreAnonymous, Dec 2025
PTY - POA
Read more Copa Airlines reviews

Horrible. No TV or any type of entertainment on board. Passwnger listening to/watching stuff on their own phone with no headphones making it noise and uncomfortable for everyone else, little/tiny food portions, old seats, useless wifi (cant access anything). Horrible exlerience especially it was a lomg distance flight with kids.

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

Simply as follows:- First, there was no vegetarian option for the meal Second, only 2 washrooms for the entire economy class.

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

They were super friendly bumped me up to exit row free of charge, All flight legs were on time

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

Cops Airlines is fantastic! The level of care and professionalism provided by the entire crew was top rate.

We had a great flight just wished they had a tv so we can see a movie that would of made my trip excellent.

the food served was an embarrassment. No connection for charging the cellphone... What a crappy airline.

Everything you need to know for your flight from San Francisco to Porto Alegre

Information on your arrival and departure airports

San Francisco (SFO)
Porto Alegre (POA)