$246 Cheap Flights from San José (SJO) to Rosario (ROS)

View $246 flight on Mon, Dec 29, 2025Opens in a new window

Popular airlines from Juan Santamaria Intl. Airport (SJO) to Rosario (ROS-Rosario - Islas Malvinas Intl.)

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Cheap Flights from San José to Rosario (SJO-ROS)

Prices were available within the past 7 days and start at $246 for one-way flights and $820 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LATAM Airlines Group
Tue, May 5 - Tue, May 19
SJO
San José
ROS
Rosario
$820 Roundtrip, found 5 days ago
$820
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Tue, May 5 from San José to Rosario, returning Tue, May 19, priced at $820 found 5 days ago
LATAM Airlines Group
Tue, May 5 - Tue, May 19
SJO
San José
ROS
Rosario
$829 Roundtrip, found 5 days ago
$829
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Tue, May 5 from San José to Rosario, returning Tue, May 19, priced at $829 found 5 days ago
LATAM Airlines Group
Tue, May 5 - Tue, May 19
SJO
San José
ROS
Rosario
$858 Roundtrip, found 5 days ago
$858
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Tue, May 5 from San José to Rosario, returning Tue, May 19, priced at $858 found 5 days ago
LATAM Airlines Group
Tue, May 5 - Tue, May 19
SJO
San José
ROS
Rosario
$860 Roundtrip, found 5 days ago
$860
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Tue, May 5 from San José to Rosario, returning Tue, May 19, priced at $860 found 5 days ago
LATAM Airlines Group
Tue, May 5 - Tue, May 19
SJO
San José
ROS
Rosario
$868 Roundtrip, found 5 days ago
$868
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Tue, May 5 from San José to Rosario, returning Tue, May 19, priced at $868 found 5 days ago
LATAM Airlines Group
Tue, May 5 - Tue, May 19
SJO
San José
ROS
Rosario
$898 Roundtrip, found 5 days ago
$898
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Tue, May 5 from San José to Rosario, returning Tue, May 19, priced at $898 found 5 days ago
avianca
Wed, Jun 3 - Tue, Jun 16
SJO
San José
ROS
Rosario
$1,018 Roundtrip, found 6 hours ago
$1,018
Roundtrip
found 6 hours ago
Select avianca flight, departing Wed, Jun 3 from San José to Rosario, returning Tue, Jun 16, priced at $1,018 found 6 hours ago
avianca
Tue, May 5 - Tue, May 19
SJO
San José
ROS
Rosario
$1,049 Roundtrip, found 5 days ago
$1,049
Roundtrip
found 5 days ago
Select avianca flight, departing Tue, May 5 from San José to Rosario, returning Tue, May 19, priced at $1,049 found 5 days ago
avianca
Tue, May 5 - Tue, May 19
SJO
San José
ROS
Rosario
$1,070 Roundtrip, found 5 days ago
$1,070
Roundtrip
found 5 days ago
Select avianca flight, departing Tue, May 5 from San José to Rosario, returning Tue, May 19, priced at $1,070 found 5 days ago
avianca
Wed, Jun 3 - Tue, Jun 16
SJO
San José
ROS
Rosario
$1,093 Roundtrip, found 6 hours ago
$1,093
Roundtrip
found 6 hours ago
Select avianca flight, departing Wed, Jun 3 from San José to Rosario, returning Tue, Jun 16, priced at $1,093 found 6 hours ago

Frequently asked questions

How much does a flight from Juan Santamaria Intl. Airport (SJO) to Rosario - Islas Malvinas Intl. Airport (ROS) cost?
Snag a cheap one-way flight from $246 or cheap return flight from $820 from Juan Santamaria Intl. Airport (SJO) to Rosario - Islas Malvinas Intl. Airport (ROS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Juan Santamaria Intl. Airport (SJO) to Rosario - Islas Malvinas Intl. Airport (ROS)?
The cheapest month to fly from SJO to ROS is May, when demand is low. Off-peak season is typically when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Juan Santamaria Intl. Airport (SJO) to Rosario - Islas Malvinas Intl. Airport (ROS)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest SJO to ROS flight.
How many flights per day from Juan Santamaria Intl. Airport (SJO) to Rosario - Islas Malvinas Intl. Airport (ROS)?
You'll have to book a flight with a layover if you're traveling from Juan Santamaria Intl. Airport (SJO) to Rosario - Islas Malvinas Intl. Airport (ROS). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from SJO to ROS?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Juan Santamaria Intl. Airport (SJO) to Rosario - Islas Malvinas Intl. Airport (ROS)?
Opt for a flight from Juan Santamaria Intl. Airport (SJO) to Rosario - Islas Malvinas Intl. Airport (ROS) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Juan Santamaria Intl. Airport (SJO) to Rosario - Islas Malvinas Intl. Airport (ROS) last-minute?
Booking your flight from SJO to ROS shortly before your journey is usually more expensive. However, if you're flexible with your departure dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a SJO to ROS flight and hotel package?
Opting for a SJO to ROS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Choose from our extensive range of hotels and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Juan Santamaria Intl. Airport (SJO) to Rosario - Islas Malvinas Intl. Airport (ROS)?
Typically, it's possible to cancel or reschedule your SJO to ROS flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Juan Santamaría Intl.
Destination airport
Rosario - Islas Malvinas Intl.
Roundtrip price
$819
Distance
3342 mi

Book with confidence

Book with confidence

San José to Rosario Flights

The cheapest times to fly from San José to Rosario

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San José to Rosario are during the month of May. You can find some of the cheapest flights from San José to Rosario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San José to Rosario

Sunday is one of the best days to book for cheap flights from San José to Rosario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San José to Rosario

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San José to Rosario in 2025. You can also book with separate airlines for your outbound and return journeys, from $246 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San José to Rosario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San José to Rosario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San José to Rosario Flights

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*Available to One Key members.