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$1,269+ Cheap flights from Rosario (ROS) to San Francisco (SFO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
ROS — SFO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Rosario to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Rosario (ROS) to San Francisco (SFO). 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 June 12, 2025.

Round-trip from

$1,269
(Copa Airlines)
From Rosario Fisherton to San Francisco
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Find flight deals from Rosario to San Francisco

Cheapest flights from Rosario to San Francisco
Explore the most affordable flight options available from Rosario to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Copa Airlines deal was found by Cheapflights users on 6/10. 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.
Sun 8/311:21 amROS - SFO
1 stop26h 19mCopa Airlines
Sat 11/2912:55 amSFO - ROS
1 stop18h 26mCopa Airlines
Deal found 6/10$1,269
This Mytrip deal was found by Cheapflights users on 6/12. 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.
Sun 7/273:15 pmROS - SFO
3 stops36h 25mMultiple Airlines
Sat 8/21:28 amSFO - ROS
1 stop18h 46mMultiple Airlines
Deal found 6/12$1,667
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/263:00 amROS - SFO
2 stops36h 13mAmerican Airlines
Sun 8/311:54 pmSFO - ROS
2 stops46h 11mAmerican Airlines
Deal found 6/12$1,763

Cheapflights Fare Finder

Customize your flight search to find flights from Rosario to San Francisco 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 June 12, 2025.
Use the filters below to find and compare flights from Rosario to San Francisco that are best for you.

Fly from

Rosario

Fly to

San Francisco

Route

Depart

Return

Price

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Sun 8/31

1:21 am-11:40 pm

1 stop26h 19m

San Francisco

Sat 11/29

12:55 am-12:21 am

1 stop18h 26m

$1,269

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Sun 7/27

3:15 pm-11:40 pm

3 stops36h 25m

San Francisco

Sat 8/2

1:28 am-12:14 am

1 stop18h 46m

$1,667

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Sat 7/26

3:00 am-11:13 am

2 stops36h 13m

San Francisco

Sun 8/3

11:54 pm-2:05 am

2 stops46h 11m

$1,763

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Rosario to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Rosario 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 Rosario to San Francisco

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated June 12, 2025.
Copa Airlines
7.5
Good
1,451 reviews

Food

6.8

Overall

7.5

Comfort

7.4

Entertainment

6.8

Boarding

7.8

Crew

8.1

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
Copa Airlines
7.5
Good
1,451 reviews
Copa Airlines
7.5
Good
1,451 reviews

Food

6.8

Overall

7.5

Comfort

7.4

Entertainment

6.8

Boarding

7.8

Crew

8.1

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
American Airlines
7.2
Good
10,000 reviews
Copa Airlines
7.5
Good
1,451 reviews

Food

6.8

Overall

7.5

Comfort

7.4

Entertainment

6.8

Boarding

7.8

Crew

8.1

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.

Related info for your journey

Find useful and relevant information for your journey from Rosario to San Francisco. 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 Rosario to San Francisco round-trip?

    Flying on Copa Airlines is currently your cheapest option to San Francisco, with prices starting at $1,269. Another option worth looking into is American Airlines, starting at $1,763 round trip.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Rosario to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Rosario to San Francisco (average of $276). Flying from Rosario to San Francisco in June is currently the most expensive (average of $364). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Rosario?

Book flights to Rosario if you plan to visit one of these locations
Roseville
Mountain View
South San Francisco
Livermore
Turlock
Santa Cruz
Manteca
Fairfield
Watsonville
Antioch
Hollister
Milpitas
Newark
Hayward
Alameda
Sunnyvale
Daly City
Union City
Campbell
Capitola

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Top airline flying from Rosario to San Francisco

Discover the top airline that operate flights from Rosario to San Francisco. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$974Average$1,251FlexibilityNo cancel feeOn-time70%

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