SFO - POA

$830 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 9/20. 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

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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Flights 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

Sat, Sep 20 - Sat, Sep 27
United Airlines Logo
11:59 pm - 1:40 pmSFO-POA
33h 41m2 stops
United Airlines Logo
2:20 pm - 11:09 amPOA-SFO
24h 49m2 stops
$830United Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
LATAM Airlines Logo
10:30 pm - 6:25 amSFO-POA
27h 55m2 stops
LATAM Airlines Logo
6:40 am - 10:52 pmPOA-SFO
20h 12m2 stops
$849LATAM Airlines
Find Deal
Fri, Aug 29 - Sat, Sep 6
LATAM Airlines Logo
7:29 am - 11:40 amSFO-POA
24h 11m2 stops
LATAM Airlines Logo
7:20 am - 11:45 amPOA-SFO
32h 25m2 stops
$917LATAM Airlines
Find Deal
Thu, Jul 3 - Sat, Aug 2
LATAM Airlines Logo
11:59 pm - 6:25 amSFO-POA
26h 26m2 stops
LATAM Airlines Logo
6:55 am - 10:49 pmPOA-SFO
19h 54m2 stops
$952LATAM Airlines
Find Deal
Wed, Jul 2 - Fri, Aug 1
Copa Airlines Logo
1:25 am - 12:15 amSFO-POA
18h 50m1 stop
Copa Airlines Logo
1:20 am - 11:39 pmPOA-SFO
26h 19m1 stop
$957Copa Airlines
Find Deal
Fri, Sep 19 - Fri, Sep 26
Copa Airlines Logo
1:28 am - 12:20 amSFO-POA
18h 52m1 stop
Copa Airlines Logo
1:27 am - 9:10 pmPOA-SFO
23h 43m1 stop
$976Copa Airlines
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Fri, Aug 1 - Fri, Aug 8
 Logo
11:47 pm - 9:45 amSFO-POA
29h 58m2 stops
 Logo
8:55 pm - 11:29 pmPOA-SFO
30h 34m2 stops
$1,045
Find Deal
Fri, Aug 1 - Fri, Aug 8
 Logo
11:47 pm - 11:40 amSFO-POA
31h 53m2 stops
 Logo
7:00 pm - 10:45 pmPOA-SFO
31h 45m3 stops
$1,189
Find Deal
Thu, Jul 3 - Sat, Aug 2
American Airlines Logo
11:20 am - 1:25 pmSFO-POA
22h 05m3 stops
American Airlines Logo
5:20 pm - 6:47 pmPOA-SFO
29h 27m2 stops
$2,656American Airlines
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Thu, Jul 3 - Sat, Aug 2
American Airlines Logo
11:20 am - 1:25 pmSFO-POA
22h 05m3 stops
American Airlines Logo
5:20 pm - 6:47 pmPOA-SFO
29h 27m2 stops
$2,672American Airlines
Find Deal
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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.

What’s the cheapest day of the week to fly from San Francisco to Porto Alegre?

The average price of all round-trip flights from San Francisco to Porto Alegre clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from San Francisco to Porto Alegre, look for departures on Wednesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Porto Alegre, Thursday is the cheapest day to fly and Saturday is the most expensive.

Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$830
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 18% 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 $830 for a round-trip ticket.

  • 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, and oneworld are the airline alliances operating flights between San Francisco and Porto Alegre, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from San Francisco to Porto Alegre, Copa Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Francisco to Porto Alegre are Copa Airlines and United Airlines. With an average price for the route of $790 and an overall rating of 7.5, Copa Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $694 and an overall rating of 7.4.

  • 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 3 airlines serving 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 1455 reviews
7.4Comfort
8.1Crew
6.8Food
6.8Entertainment
7.8Boarding
Airline reviews

We had a five hour layover in the way home from Colombia. I read the "bout your flight" email carefully before we checked bags. We had to go through security right at the gate. Almost lost our ground coffee because that airport only allows 16 ounce of coffee and we had 18. I've been to 48 countries and never heard of a coffee restriction. I can't follow a rule I don't know about. I requested they bring our coffee to our checked luggage. Instead tey gate checked our bag for free. Back to planning transfers in Dallas I guess

2.0 MediocreAnonymous, Jun 2025CTG - PTY
Read more Copa Airlines reviews

We had a five hour layover in the way home from Colombia. I read the "bout your flight" email carefully before we checked bags. We had to go through security right at the gate. Almost lost our ground coffee because that airport only allows 16 ounce of coffee and we had 18. I've been to 48 countries and never heard of a coffee restriction. I can't follow a rule I don't know about. I requested they bring our coffee to our checked luggage. Instead tey gate checked our bag for free. Back to planning transfers in Dallas I guess

Tell people to remain in their seats during the meal/beverage distribution. Enforce boarding by group numbers. No one was checking. Tell people to turn their electronics speakers off. Bigger cups for drinks.

Placed us in the last rear row of the plane so could not recline seats because of the rear wall, and also made it more of a tight space when the passenger in front reclined their seat. While understand seat assignments, every passenger should be afforded a reclining seat. The odor control scent from the restrooms was overwhelming strong. My wife and I could not deal with it, and she suffered a terrible headache as a result. I kept getting hit by the crew since I was on the ilse seat. No apologies, nothing. They made me feel like I was supposed to take the beating for a 3 hr flight.

There was no individual at the front check in when I arrived. I waited for at least 15 minutes and walked around asking security/janitors if they could help and they did not have a solution. So I had to take my checked bag through security and they threw away some of my items. I ended up making it to the gate only a few minutes before it closed due to my waiting for an agent at check in.

The flight was delayed twice and I could not speak with anyone at the airport about checking in. The phone number to Copa - the customer service agents were polite. They are just limited at helping because they are not at the airport

It would have been better if they don't separate families in seating. We were seated in the aile row in the middle of a family of four. It would have been better if they they seat the family of four together than separated.

It was reasonably comfortable trip considering its duration (7 hours). Crew was very good and friendly, seats very more comfortable than other planes. Only negative comment would be that the bathroom light did not get its full brightness 🙃

It was good, plane is a bit older so seats are somewhat flat

Great from check in all the way to the end. Very happy with Copa

Well the airline was fine. The only thing is I was charged for a checked in luggage. But when I reserved the ticket it showed a check in bag allowed. Who can I get in contact with for reimbursement.? The airline said I had to speak to whoever I booked ticket with.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Breakfast was not loaded at SFO due to catering company change. Seems like a major airline at a major hub would have thought of something else or warned passengers to pick up food before boarding a 3 hour flight.

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

They hired a new catering company the same day of my flight. They botched the job by not delivering the right carts and after THREE HOURS waiting, the flight crew timed out (flight was 19 hours long and FAA rules state crew can’t work more than 14 hours long). So they CANCELED OUR FLIGHT!! Worst experience ever. Avoid UAL at all costs.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Cramped seats. FAA should make airlines have more legroom, for even short people complain

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

Eventless. It was a good flight and good crew. Can’t complaint.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

British Airways staff are very polite and willing to help.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

Worst seats I’ve ever had !!! The seats were very narrow and uncomfortable and misaligned with the seats in front of mine leading to bottom of the seat in front of mine pressing on my legs for 15.5 hours !

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

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

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