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$1,080+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
ROS — SFO
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap 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 January 27, 2026.

This Mytrip deal was found by Cheapflights users on 1/27. 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.
Fri 3/137:30 pm
ROS
-
SFO
3 stops32h 10m
Multiple Airlines
Thu 3/192:35 am
SFO
-
ROS
3 stops26h 55m
Multiple Airlines
Deal found 1/27$1,080
This Copa Airlines deal was found by Cheapflights users on 1/25. 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.
Wed 4/291:26 am
ROS
-
SFO
1 stop26h 14m
Copa Airlines
Sun 5/311:12 am
SFO
-
ROS
1 stop22h 30m
Copa Airlines
Deal found 1/25$1,112
This Copa Airlines deal was found by Cheapflights users on 1/24. 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.
Wed 3/115:20 am
ROS
-
SFO
1 stop22h 20m
Copa Airlines
Wed 3/188:42 pm
SFO
-
ROS
1 stop23h 38m
Copa Airlines
Deal found 1/24$1,133
This Copa Airlines deal was found by Cheapflights users on 1/25. 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 4/265:12 am
ROS
-
SFO
1 stop22h 28m
Copa Airlines
Fri 5/291:12 am
SFO
-
ROS
1 stop19h 00m
Copa Airlines
Deal found 1/25$1,154
This BusinessClass deal was found by Cheapflights users on 1/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:12 am
ROS
-
SFO
1 stop22h 28m
Copa Airlines
Sun 5/318:06 pm
SFO
-
ROS
1 stop24h 06m
Copa Airlines
Deal found 1/25$1,239
This BusinessClass deal was found by Cheapflights users on 1/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:09 am
ROS
-
SFO
1 stop22h 31m
Copa Airlines
Tue 6/21:12 am
SFO
-
ROS
1 stop19h 00m
Copa Airlines
Deal found 1/25$1,251
This BusinessClass deal was found by Cheapflights users on 1/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/305:12 am
ROS
-
SFO
1 stop17h 13m
Copa Airlines
Mon 6/11:12 am
SFO
-
ROS
1 stop19h 00m
Copa Airlines
Deal found 1/25$1,273
This Mytrip deal was found by Cheapflights users on 1/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:35 pm
ROS
-
SFO
3 stops33h 15m
Multiple Airlines
Thu 4/22:30 am
SFO
-
ROS
3 stops33h 50m
Multiple Airlines
Deal found 1/26$1,278
This eDestinos deal was found by Cheapflights users on 1/26. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1012:10 pm
ROS
-
SFO
3 stops50h 42m
Multiple Airlines
Fri 4/34:03 pm
SFO
-
ROS
3 stops50h 17m
Multiple Airlines
Deal found 1/26$1,282
This Gurufare deal was found by Cheapflights users on 1/25. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:35 am
ROS
-
SFO
2 stops32h 24m
Multiple Airlines
Tue 6/27:00 am
SFO
-
ROS
2 stops19h 05m
Multiple Airlines
Deal found 1/25$1,304
This BusinessClass deal was found by Cheapflights users on 1/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:12 am
ROS
-
SFO
1 stop22h 28m
Copa Airlines
Fri 5/291:12 am
SFO
-
ROS
1 stop19h 00m
Copa Airlines
Deal found 1/25$1,305
This BusinessClass deal was found by Cheapflights users on 1/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/21:23 am
ROS
-
SFO
1 stop26h 17m
Copa Airlines
Tue 6/21:12 am
SFO
-
ROS
1 stop19h 00m
Copa Airlines
Deal found 1/25$1,318

Find 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,080
(Mytrip)
Provider with most accurate pricing for Rosario Fisherton-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rosario Fisherton-San Francisco flights.
Search Deals
From Rosario Fisherton to San Francisco
Search Deals

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 January 27, 2026.
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

Fri 3/13

7:30 pm-11:40 pm

3 stops32h 10m

San Francisco

Thu 3/19

2:35 am-9:30 am

3 stops26h 55m

$1,080

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Wed 3/11

1:26 am-11:40 pm

1 stop26h 14m

San Francisco

Thu 3/19

8:42 pm-12:20 am

1 stop23h 38m

$1,133

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Wed 3/11

5:20 am-11:40 pm

1 stop22h 20m

San Francisco

Wed 3/18

8:42 pm-12:20 am

1 stop23h 38m

$1,133

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Sun 4/26

5:12 am-11:40 pm

1 stop22h 28m

San Francisco

Fri 5/29

1:12 am-12:12 am

1 stop19h 00m

$1,154

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Sat 4/25

1:26 am-11:40 pm

1 stop26h 14m

San Francisco

Sun 5/31

8:06 pm-3:42 am

1 stop27h 36m

$1,239

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Mon 4/27

5:12 am-11:40 pm

1 stop22h 28m

San Francisco

Thu 5/28

1:12 am-12:12 am

1 stop19h 00m

$1,239

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Sat 4/25

5:12 am-11:40 pm

1 stop22h 28m

San Francisco

Thu 5/28

1:12 am-12:12 am

1 stop19h 00m

$1,239

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Mon 4/27

5:12 am-11:40 pm

1 stop22h 28m

San Francisco

Sat 5/30

1:12 am-12:12 am

1 stop19h 00m

$1,239

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Sat 4/25

5:12 am-11:40 pm

1 stop22h 28m

San Francisco

Sun 5/31

8:06 pm-12:12 am

1 stop24h 06m

$1,239

RosarioSan Francisco

ROS - SFO

ROSSFO

Rosario Fisherton

Thu 3/12

5:35 pm-10:50 pm

3 stops33h 15m

San Francisco

Thu 4/2

2:30 am-4:20 pm

3 stops33h 50m

$1,278

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 12 results
1
2
  • Most accurate provider: When it comes to deals on Rosario-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rosario-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rosario-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rosario-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Rosario-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

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.

  • How long is the flight from Rosario to San Francisco?

    Copa Airlines can get you from Rosario to San Francisco in just under 26h 14m. Your travel time can differ by up to . There are 6274 mi between Rosario and San Francisco.

  • 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.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
South San Francisco
Santa Cruz
Roseville
Santa Clara
Livermore
Watsonville
San Bruno
Daly City
Sunnyvale
Turlock
Vacaville
San Carlos
San Ramon
Manteca
Vallejo
San Lorenzo
Davis
Hollister
Redwood City
Union City

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