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$864+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
ROS — SFO
Jul 14 — Jul 211
Mon 7/14
Mon 7/21
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 July 9, 2025.

Round-trip from

$864
(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 July 9, 2025.

This Copa Airlines deal was found by Cheapflights users on 7/9. 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.
Mon 8/255:08 amROS - SFO
1 stop22h 31mCopa Airlines
Sat 8/301:30 amSFO - ROS
1 stop22h 22mCopa Airlines
Deal found 7/9$864
This Sembo deal was found by Cheapflights users on 7/9. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/255:08 amROS - SFO
2 stops43h 29mMultiple Airlines
Sun 8/317:10 amSFO - ROS
2 stops37h 03mMultiple Airlines
Deal found 7/9$1,123
This LATAM Airlines deal was found by Cheapflights users on 7/9. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/77:30 amROS - SFO
2 stops18h 39mLATAM Airlines
Tue 9/165:55 amSFO - ROS
2 stops20h 10mLATAM Airlines
Deal found 7/9$1,756

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 July 9, 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

Mon 8/25

5:08 am-11:39 pm

1 stop22h 31m

San Francisco

Sat 8/30

1:30 am-3:52 am

1 stop22h 22m

$864

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Mon 8/25

5:08 am-8:37 pm

2 stops43h 29m

San Francisco

Sun 8/31

7:10 am-12:13 am

2 stops37h 03m

$1,123

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Sun 9/7

7:30 am-10:09 pm

2 stops18h 39m

San Francisco

Tue 9/16

5:55 am-6:05 am

2 stops20h 10m

$1,756

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

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.

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 July 9, 2025.
Read through reviews of airlines operating flights from Rosario to San Francisco, such as LATAM Airlines and Copa Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
LATAM Airlines
7.5
Good
1,807 reviews

Overall

7.5

Crew

8.1

Boarding

7.6

Comfort

7.4

Entertainment

7.0

Food

6.7

Reviews

1 / 20
4.0
Okay

Murilo,Jun 2025

SFO - LAX

I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
LATAM Airlines
7.5
Good
1,807 reviews
LATAM Airlines
7.5
Good
1,807 reviews

Overall

7.5

Crew

8.1

Boarding

7.6

Comfort

7.4

Entertainment

7.0

Food

6.7

Reviews

1 / 20
4.0
Okay

Murilo,Jun 2025

SFO - LAX

I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
Copa Airlines
7.5
Good
1,474 reviews
LATAM Airlines
7.5
Good
1,807 reviews

Overall

7.5

Crew

8.1

Boarding

7.6

Comfort

7.4

Entertainment

7.0

Food

6.7

Reviews

1 / 20
4.0
Okay

Murilo,Jun 2025

SFO - LAX

I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing

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 $864. Another option worth looking into is LATAM Airlines, starting at $1,756 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 $358). 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
Santa Cruz
Livermore
South San Francisco
Turlock
Manteca
Antioch
Hollister
Newark
Watsonville
Alameda
Milpitas
Sunnyvale
Campbell
Lathrop
Daly City
Foster City
Capitola
Richmond

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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 July 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$974Average$1,245FlexibilityNo cancel feeOn-time70%

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