$1,300+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
ROS — SFO
Jan 11 — Jan 181
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Rosario to San Francisco
Best flights from Rosario to San FranciscoDiscover carefully curated flight deals from Rosario to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.
Discover carefully curated flight deals from Rosario to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.
This Mytrip deal was found by Cheapflights users on 12/11. 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.
Sat 2/72:45 amROS - SFO
3 stops24h 05mMultiple Airlines
Mon 2/161:20 pmSFO - ROS
3 stops31h 20mMultiple Airlines
Deal found 12/11![Multiple Airlines logo]()
$1,300
This Copa Airlines deal was found by Cheapflights users on 12/11. 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 1/255:20 amROS - SFO
1 stop23h 00mCopa Airlines
Sat 1/3112:42 amSFO - ROS
1 stop18h 38mCopa Airlines
Deal found 12/11![Copa Airlines logo]()
$1,499
This American Airlines deal was found by Cheapflights users on 12/11. 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 1/241:55 amROS - SFO
2 stops38h 09mAmerican Airlines
Sun 2/11:15 pmSFO - ROS
2 stops31h 45mAmerican Airlines
Deal found 12/11![American Airlines logo]()
$1,760
This eDestinos deal was found by Cheapflights users on 12/11. 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.
Sun 1/257:45 amROS - SFO
2 stops32h 28mMultiple Airlines
Sat 1/3112:42 amSFO - ROS
3 stops52h 58mMultiple Airlines
Deal found 12/11![Multiple Airlines logo]()
$1,628
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 December 12, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $1,300 (Mytrip) |
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 December 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
Sat 2/7
2:45 am-9:50 pm
3 stops24h 05m
San Francisco
Mon 2/16
1:20 pm-1:40 am
3 stops31h 20m
$1,300
RosarioSan Francisco
ROS - SFO
ROSSFO
Rosario Fisherton
Sun 1/25
5:20 am-11:20 pm
1 stop23h 00m
San Francisco
Sat 1/31
12:42 am-12:20 am
1 stop18h 38m
$1,499
RosarioSan Francisco
ROS - SFO
ROSSFO
Rosario Fisherton
Sun 1/25
7:45 am-11:13 am
2 stops32h 28m
San Francisco
Sat 1/31
12:42 am-10:40 am
3 stops52h 58m
$1,628
RosarioSan Francisco
ROS - SFO
ROSSFO
Rosario Fisherton
Sat 1/24
1:55 am-11:04 am
2 stops38h 09m
San Francisco
Sun 2/1
1:15 pm-2:00 am
2 stops31h 45m
$1,760
Compare providers for flights from Rosario to San Francisco
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Rosario to San Francisco in December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Rosario-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Rosario-San Francisco flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.
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