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Cheap flights from San Francisco to Porto Alegre from $305

This is the cheapest one-way 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 11/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from San Francisco to Porto Alegre

Cheap round-trip flights

Copa Airlines Logo
1:31 am - 12:20 amSFO-POA
18h 49m1 stop
Copa Airlines Logo
1:25 am - 11:39 pmPOA-SFO
26h 14m1 stop
$668Copa Airlines
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Wed, Oct 1 - Wed, Oct 8
United Airlines Logo
7:00 am - 2:30 pmSFO-POA
27h 30m2 stops
United Airlines Logo
5:10 pm - 7:25 pmPOA-SFO
30h 15m2 stops
$682United Airlines
Find Deal
Sat, Oct 4 - Mon, Oct 27
United Airlines Logo
11:59 pm - 2:35 pmSFO-POA
34h 36m2 stops
United Airlines Logo
3:25 pm - 11:29 amPOA-SFO
24h 04m2 stops
$692United Airlines
Find Deal
Sun, Oct 5 - Fri, Oct 31
Copa Airlines Logo
1:31 am - 12:20 amSFO-POA
18h 49m1 stop
Copa Airlines Logo
1:30 am - 11:39 pmPOA-SFO
26h 09m1 stop
$726Copa Airlines
Find Deal
Mon, Oct 6 - Mon, Oct 27
Logo
1:31 am - 12:20 amSFO-POA
18h 49m1 stop
Logo
1:30 am - 9:05 pmPOA-SFO
23h 35m2 stops
$752
Find Deal
Sat, Oct 4 - Mon, Oct 27
Delta Logo
5:50 am - 6:25 amSFO-POA
20h 35m2 stops
Delta Logo
7:20 am - 7:25 amPOA-SFO
28h 05m2 stops
$830Delta
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Wed, Oct 8 - Sat, Oct 25
Delta Logo
9:46 pm - 12:25 amSFO-POA
22h 39m2 stops
Delta Logo
7:20 am - 7:25 amPOA-SFO
28h 05m2 stops
$836Delta
Find Deal
Sun, Oct 5 - Sat, Oct 25
LATAM Airlines Logo
3:00 pm - 5:00 pmSFO-POA
22h 00m2 stops
LATAM Airlines Logo
7:45 am - 10:12 pmPOA-SFO
18h 27m2 stops
$846LATAM Airlines
Find Deal
Fri, Oct 10 - Thu, Oct 30
LATAM Airlines Logo
3:00 pm - 5:00 pmSFO-POA
22h 00m2 stops
LATAM Airlines Logo
6:35 am - 9:58 amPOA-SFO
31h 23m2 stops
$847LATAM Airlines
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Fri, Oct 10 - Wed, Oct 29
GOL Logo
12:07 pm - 3:40 pmSFO-POA
22h 33m2 stops
GOL Logo
6:00 am - 11:51 amPOA-SFO
34h 51m2 stops
$1,751GOL
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Fri, Dec 19 - Sun, Jan 18

Copa Airlines flights from San Francisco to Porto Alegre

Our best Copa Airlines deals on San Francisco to Porto Alegre flight tickets
Copa Airlines
Oct 1
SFO1:31 amSan Francisco
18h 49m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Oct 8
POA1:25 amPorto Alegre Salgado Filho
26h 14m
1 stop
SFO11:39 pmSan Francisco
$668
Find similar
Copa Airlines
Sep 19
SFO1:30 amSan Francisco
18h 50m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Sep 26
POA1:25 amPorto Alegre Salgado Filho
26h 00m
1 stop
SFO11:25 pmSan Francisco
$686
Find similar
Copa Airlines
Oct 6
SFO1:31 amSan Francisco
18h 49m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Oct 27
POA1:30 amPorto Alegre Salgado Filho
26h 09m
1 stop
SFO11:39 pmSan Francisco
$726
Find similar

GOL flights from San Francisco to Porto Alegre

Our best GOL deals on San Francisco to Porto Alegre flight tickets
GOL
Sep 20
SFO10:22 amSan Francisco
34h 08m
2 stops
POA12:30 amPorto Alegre Salgado Filho
Sep 27
POA6:05 amPorto Alegre Salgado Filho
35h 00m
2 stops
SFO1:05 pmSan Francisco
$1,007
Find similar
GOL
Dec 19
SFO12:07 pmSan Francisco
22h 33m
2 stops
POA3:40 pmPorto Alegre Salgado Filho
Jan 18
POA6:00 amPorto Alegre Salgado Filho
34h 51m
2 stops
SFO11:51 amSan Francisco
$1,751
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momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Porto Alegre that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 16, 2025.
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

Wed 10/1

1:31 am-12:20 am

1 stop18h 49m

Porto Alegre Salgado Filho

Wed 10/8

1:25 am-11:39 pm

1 stop26h 14m

$668

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sat 10/4

7:00 am-2:30 pm

2 stops27h 30m

Porto Alegre Salgado Filho

Mon 10/27

5:10 pm-7:25 pm

2 stops30h 15m

$682

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sun 10/5

11:59 pm-2:35 pm

2 stops34h 36m

Porto Alegre Salgado Filho

Fri 10/31

3:25 pm-11:29 am

2 stops24h 04m

$692

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Mon 10/6

1:31 am-12:20 am

1 stop18h 49m

Porto Alegre Salgado Filho

Mon 10/27

1:30 am-11:39 pm

1 stop26h 09m

$726

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sat 10/4

1:31 am-12:20 am

1 stop18h 49m

Porto Alegre Salgado Filho

Mon 10/27

1:30 am-9:05 pm

2 stops23h 35m

$752

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 10/8

5:50 am-6:25 am

2 stops20h 35m

Porto Alegre Salgado Filho

Sat 10/25

7:20 am-7:25 am

2 stops28h 05m

$830

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sun 10/5

9:46 pm-12:25 am

2 stops22h 39m

Porto Alegre Salgado Filho

Sat 10/25

7:20 am-7:25 am

2 stops28h 05m

$836

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Fri 10/10

3:00 pm-5:00 pm

2 stops22h 00m

Porto Alegre Salgado Filho

Thu 10/30

7:45 am-10:12 pm

2 stops18h 27m

$846

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Fri 10/10

3:00 pm-5:00 pm

2 stops22h 00m

Porto Alegre Salgado Filho

Wed 10/29

6:35 am-9:58 am

2 stops31h 23m

$847

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Fri 12/19

12:07 pm-3:40 pm

2 stops22h 33m

Porto Alegre Salgado Filho

Sun 1/18

6:00 am-11:51 am

2 stops34h 51m

$1,751

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 month to fly to Porto Alegre?

The cheapest month to fly to Porto Alegre from San Francisco is in August. Flight prices, which tend to average around $644, are often lower during this time because this is during the off-season. If you’re not able to fly to Porto Alegre in August, then February is your next best option. Flight prices from San Francisco to Porto Alegre during February average around $675.

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.

Can stopping save me money on San Francisco to Porto Alegre flights?

You could potentially save up to 52% on your flight if you consider stops on a San Francisco to Porto Alegre flight.

When to book flights from San Francisco to Porto Alegre

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Porto Alegre according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

Direct flights

None
There are no direct flights from San Francisco to Porto Alegre. There are no popular flight routes from San Francisco to Porto Alegre.
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  • 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 49m.

  • 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?

  • 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?

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
Copa AirlinesPriceFrom $345Free CancellationRating
7.6
1,531 reviews
Search Copa Airlines flights
American AirlinesPriceFrom $578Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $643Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights

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.

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