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Porto Alegre

$333+ Cheap flights from San Francisco (SFO) to Porto Alegre (POA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — POA
ago. 3 — ago. 101
dom. 8/3
dom. 8/10
1 adult, Economy
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Cheap flight deals from San Francisco to Porto Alegre

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Porto Alegre (POA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated julio 29, 2025.

Round-trip from

$665
(United Airlines)

One-way from

$333
(United Airlines)

Popular in

December

Cheapest in

August

Average price

$746
From San Francisco to Porto Alegre Salgado Filho
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One-way flight from San Francisco to Porto Alegre Salgado Filho
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Highest demand for flights based on searches. 25% potential increase in price ($318 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($76 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from San Francisco to Porto Alegre

Cheapest flights from San Francisco to Porto Alegre
Explore the most affordable flight options available from San Francisco to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 29, 2025.

This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/215:00 amSFO - POA
2 stops28h 10mUnited Airlines
vie. 10/243:25 pmPOA - SFO
2 stops28h 05mUnited Airlines
Deal found 7/27$665
This Copa Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/211:30 amSFO - POA
1 stop18h 50mCopa Airlines
mar. 10/211:25 amPOA - SFO
1 stop26h 14mCopa Airlines
Deal found 7/27$798
This FlightHub deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/206:15 amSFO - POA
2 stops20h 10mLATAM Airlines
sáb. 9/277:20 amPOA - SFO
2 stops31h 10mLATAM Airlines
Deal found 7/27$807
This Mytrip deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/2412:05 amSFO - POA
3 stops33h 05mMultiple Airlines
mar. 10/149:05 pmPOA - SFO
3 stops29h 40mMultiple Airlines
Deal found 7/27$858
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/16:15 amSFO - POA
2 stops20h 10mDelta
jue. 8/286:40 amPOA - SFO
2 stops36h 18mDelta
Deal found 7/29$1,497

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated julio 29, 2025.
Use the filters below to find and compare flights from San Francisco to Porto Alegre that are best for you.

Fly from

San Francisco

Fly to

Porto Alegre

Route

Depart

Return

Price

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

dom. 9/21

5:00 am-1:10 pm

2 stops28h 10m

Porto Alegre Salgado Filho

vie. 10/24

3:25 pm-3:30 pm

2 stops28h 05m

$665

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

dom. 9/21

1:30 am-12:20 am

1 stop18h 50m

Porto Alegre Salgado Filho

mar. 10/21

1:25 am-11:39 pm

1 stop26h 14m

$798

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

sáb. 9/20

6:15 am-6:25 am

2 stops20h 10m

Porto Alegre Salgado Filho

sáb. 9/27

7:20 am-10:30 am

2 stops31h 10m

$807

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

mié. 9/24

12:05 am-1:10 pm

3 stops33h 05m

Porto Alegre Salgado Filho

mar. 10/14

9:05 pm-10:45 pm

3 stops29h 40m

$858

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

vie. 8/1

6:15 am-6:25 am

2 stops20h 10m

Porto Alegre Salgado Filho

jue. 8/28

6:40 am-2:58 pm

2 stops36h 18m

$1,497

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

lun. 8/4

11:59 pm-1:40 pm

2 stops33h 41m

$333

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

dom. 8/3

1:30 am-12:15 am

1 stop18h 45m

$906

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from San Francisco to Porto Alegre

Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest time of day to fly from SFO to POA?

Find hourly flight availability from San Francisco to Porto Alegre. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 29, 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Porto Alegre in the afternoon. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Porto Alegre

Get insights into the airlines that provide service to Porto Alegre. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto Alegre. Reviews last updated julio 29, 2025.
See what other customers who have flown with Delta, LATAM Airlines, and Copa Airlines from San Francisco to Porto Alegre have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
LATAM Airlines
7.5
Good
1,821 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Copa Airlines
7.5
Good
1,493 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,899 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Porto Alegre. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from San Francisco to Porto Alegre round-trip?

    Currently priced at $665, United Airlines will fly you from San Francisco to Porto Alegre and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Copa Airlines and LATAM Airlines - these airlines can fly you to your destination from $798 and $807, respectively. You may be able to fly from San Francisco to Porto Alegre for 28% less than the average price by searching for these airlines.

  • Can I find deals for flights from San Francisco to Porto Alegre that include hotel bookings?

    Yes. In addition to deals on San Francisco to Porto Alegre flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Porto Alegre?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Porto Alegre.

  • Can I find deals for business class flights from San Francisco to Porto Alegre?

    Yes. Cheapflights offers flight deals from San Francisco to Porto Alegre by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from San Francisco to Porto Alegre

Discover the top 3 airlines that operate flights from San Francisco to Porto Alegre. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$345Average$790FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$578Average$1,543FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$643Average$694FlexibilityNo cancel feeOn-time69%

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