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Cheap flights from San Francisco to Porto Alegre from $333

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 8/4. 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

United Airlines Logo
5:00 am - 1:10 pmSFO-POA
28h 10m2 stops
United Airlines Logo
3:25 pm - 3:30 pmPOA-SFO
28h 05m2 stops
$665United Airlines
Find Deal
Sun, Sep 21 - Fri, Oct 24
United Airlines Logo
11:10 pm - 4:10 pmSFO-POA
37h 00m2 stops
United Airlines Logo
5:10 pm - 6:50 pmPOA-SFO
29h 40m2 stops
$675United Airlines
Find Deal
Sat, Sep 20 - Tue, Oct 21
United Airlines Logo
7:10 am - 2:35 pmSFO-POA
27h 25m2 stops
United Airlines Logo
5:10 pm - 5:46 pmPOA-SFO
28h 36m2 stops
$680United Airlines
Find Deal
Wed, Sep 24 - Wed, Oct 22
Copa Airlines Logo
1:30 am - 12:20 amSFO-POA
18h 50m1 stop
Copa Airlines Logo
1:25 am - 11:39 pmPOA-SFO
26h 14m1 stop
$798Copa Airlines
Find Deal
Sun, Sep 21 - Tue, Oct 21
Copa Airlines Logo
10:55 am - 12:20 amSFO-POA
33h 25m1 stop
Copa Airlines Logo
1:25 am - 11:39 pmPOA-SFO
26h 14m1 stop
$804Copa Airlines
Find Deal
Mon, Sep 22 - Tue, Oct 21
LATAM Airlines Logo
6:15 am - 6:25 amSFO-POA
20h 10m2 stops
LATAM Airlines Logo
7:20 am - 10:30 amPOA-SFO
31h 10m2 stops
$807LATAM Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
GOL Logo
11:10 am - 5:50 pmSFO-POA
26h 40m2 stops
GOL Logo
1:55 pm - 10:34 amPOA-SFO
24h 39m2 stops
$815GOL
Find Deal
Thu, Sep 25 - Tue, Oct 14
Logo
12:05 am - 1:10 pmSFO-POA
33h 05m3 stops
Logo
9:05 pm - 10:45 pmPOA-SFO
29h 40m3 stops
$858
Find Deal
Wed, Sep 24 - Tue, Oct 14
Logo
1:30 am - 12:20 amSFO-POA
18h 50m1 stop
Logo
5:15 am - 10:53 pmPOA-SFO
45h 38m2 stops
$899
Find Deal
Tue, Sep 23 - Wed, Oct 22
LATAM Airlines Logo
1:37 pm - 5:00 pmSFO-POA
23h 23m2 stops
LATAM Airlines Logo
4:40 am - 10:16 amPOA-SFO
33h 36m3 stops
$914LATAM Airlines
Find Deal
Thu, Sep 25 - Tue, Oct 14

United Airlines flights from San Francisco to Porto Alegre

Our best United Airlines deals on San Francisco to Porto Alegre flight tickets
United Airlines
Sep 21
SFO5:00 amSan Francisco
28h 10m
2 stops
POA1:10 pmPorto Alegre Salgado Filho
Oct 24
POA3:25 pmPorto Alegre Salgado Filho
28h 05m
2 stops
SFO3:30 pmSan Francisco
$665
Find similar
United Airlines
Sep 20
SFO11:10 pmSan Francisco
37h 00m
2 stops
POA4:10 pmPorto Alegre Salgado Filho
Oct 21
POA5:10 pmPorto Alegre Salgado Filho
29h 40m
2 stops
SFO6:50 pmSan Francisco
$675
Find similar
United Airlines
Sep 24
SFO7:10 amSan Francisco
27h 25m
2 stops
POA2:35 pmPorto Alegre Salgado Filho
Oct 22
POA5:10 pmPorto Alegre Salgado Filho
28h 36m
2 stops
SFO5:46 pmSan Francisco
$680
Find similar

Copa Airlines flights from San Francisco to Porto Alegre

Our best Copa Airlines deals on San Francisco to Porto Alegre flight tickets
Copa Airlines
Sep 21
SFO1:30 amSan Francisco
18h 50m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Oct 21
POA1:25 amPorto Alegre Salgado Filho
26h 14m
1 stop
SFO11:39 pmSan Francisco
$798
Find similar
Copa Airlines
Sep 22
SFO10:55 amSan Francisco
33h 25m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Oct 21
POA1:25 amPorto Alegre Salgado Filho
26h 14m
1 stop
SFO11:39 pmSan Francisco
$804
Find similar
Copa Airlines
Sep 19
SFO1:30 amSan Francisco
18h 50m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Sep 26
POA1:27 amPorto Alegre Salgado Filho
25h 58m
1 stop
SFO11:25 pmSan Francisco
$853
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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 July 29, 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

Sun 9/21

5:00 am-1:10 pm

2 stops28h 10m

Porto Alegre Salgado Filho

Fri 10/24

3:25 pm-3:30 pm

2 stops28h 05m

$665

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sat 9/20

11:10 pm-4:10 pm

2 stops37h 00m

Porto Alegre Salgado Filho

Tue 10/21

5:10 pm-6:50 pm

2 stops29h 40m

$675

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 9/24

7:10 am-2:35 pm

2 stops27h 25m

Porto Alegre Salgado Filho

Wed 10/22

5:10 pm-5:46 pm

2 stops28h 36m

$680

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sun 9/21

1:30 am-12:20 am

1 stop18h 50m

Porto Alegre Salgado Filho

Tue 10/21

1:25 am-11:39 pm

1 stop26h 14m

$798

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Mon 9/22

10:55 am-12:20 am

1 stop33h 25m

Porto Alegre Salgado Filho

Tue 10/21

1:25 am-11:39 pm

1 stop26h 14m

$804

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Sat 9/20

6:15 am-6:25 am

2 stops20h 10m

Porto Alegre Salgado Filho

Sat 9/27

7:20 am-10:30 am

2 stops31h 10m

$807

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Thu 9/25

11:10 am-5:50 pm

2 stops26h 40m

Porto Alegre Salgado Filho

Tue 10/14

1:55 pm-10:34 am

2 stops24h 39m

$815

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Wed 9/24

12:05 am-1:10 pm

3 stops33h 05m

Porto Alegre Salgado Filho

Tue 10/14

9:05 pm-10:45 pm

3 stops29h 40m

$858

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Tue 9/23

1:30 am-12:20 am

1 stop18h 50m

Porto Alegre Salgado Filho

Wed 10/22

5:15 am-10:53 pm

2 stops45h 38m

$899

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

Thu 9/25

1:37 pm-5:00 pm

2 stops23h 23m

Porto Alegre Salgado Filho

Tue 10/14

4:40 am-10:16 am

3 stops33h 36m

$914

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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 30% 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

Best Price Found

$333

Fastest flight time

18h 45m

Direct flights

None

Airports in Porto Alegre

1 airport
The best one-way flight to Porto Alegre from San Francisco in the past 72 hours is $333. The best round-trip flight deal from San Francisco to Porto Alegre found on momondo in the last 72 hours is $665.
The fastest flight from San Francisco to Porto Alegre takes 18h 45m
There are no direct flights from San Francisco to Porto Alegre. Popular non-direct route for this connection is San Francisco Airport - Porto Alegre Salgado Filho Airport.
There is 1 airport near Porto Alegre: Porto Alegre Salgado Filho (POA)
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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 50m.

  • 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
7.5
1,493 reviews
Search Copa Airlines flights
American AirlinesPriceFrom $578Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $643Free CancellationRating
7.4
8,899 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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