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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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
ROS — SFO
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 29, 2025.

Round-trip from

$864
(Copa Airlines)
From Rosario Fisherton to San Francisco
Search Deals

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 29, 2025.

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.
Tue 8/125:08 amROS - SFO
1 stop22h 31mCopa Airlines
Tue 9/21:30 amSFO - ROS
1 stop22h 22mCopa Airlines
Deal found 7/27$864
This LATAM Airlines deal was found by Cheapflights users on 7/26. 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.
Wed 8/207:30 amROS - SFO
2 stops32h 03mMultiple Airlines
Mon 9/110:53 pmSFO - ROS
2 stops27h 12mMultiple Airlines
Deal found 7/26$1,294
This LATAM Airlines deal was found by Cheapflights users on 7/28. 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 9/166:15 amSFO - ROS
2 stops19h 50mLATAM Airlines
Deal found 7/28$1,696
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/93:00 amROS - SFO
2 stops36h 15mAmerican Airlines
Tue 9/211:59 pmSFO - ROS
2 stops46h 06mAmerican Airlines
Deal found 7/27$1,697

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 29, 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

Tue 8/12

5:08 am-11:39 pm

1 stop22h 31m

San Francisco

Tue 9/2

1:30 am-3:52 am

1 stop22h 22m

$864

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Wed 8/20

7:30 am-11:33 am

2 stops32h 03m

San Francisco

Mon 9/1

10:53 pm-6:05 am

2 stops27h 12m

$1,294

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Sun 9/7

7:30 am-10:09 pm

2 stops18h 39m

San Francisco

Tue 9/16

6:15 am-6:05 am

2 stops19h 50m

$1,696

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Sat 8/9

3:00 am-11:15 am

2 stops36h 15m

San Francisco

Tue 9/2

11:59 pm-2:05 am

2 stops46h 06m

$1,697

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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 29, 2025.
Read through reviews of airlines operating flights from Rosario to San Francisco, such as LATAM Airlines, Copa Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
LATAM Airlines
7.5
Good
1,821 reviews

Boarding

7.6

Overall

7.5

Entertainment

7.0

Comfort

7.4

Crew

8.1

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
1,821 reviews
LATAM Airlines
7.5
Good
1,821 reviews

Boarding

7.6

Overall

7.5

Entertainment

7.0

Comfort

7.4

Crew

8.1

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
1,493 reviews
LATAM Airlines
7.5
Good
1,821 reviews

Boarding

7.6

Overall

7.5

Entertainment

7.0

Comfort

7.4

Crew

8.1

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
American Airlines
7.2
Good
10,000 reviews
LATAM Airlines
7.5
Good
1,821 reviews

Boarding

7.6

Overall

7.5

Entertainment

7.0

Comfort

7.4

Crew

8.1

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. Additional round-trip tickets that might be worth considering are offered by LATAM Airlines and American Airlines, with the lowest prices starting at $1,696 and $1,697, respectively.

  • 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 San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
Mountain View
Santa Cruz
South San Francisco
Livermore
Turlock
Manteca
Antioch
Hollister
Watsonville
Sunnyvale
Newark
Milpitas
Campbell
Foster City
Capitola
Santa Clara
San Leandro
Burlingame
Redwood City

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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 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$974Average$1,245FlexibilityNo cancel feeOn-time70%

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