In general, January is the cheapest month to fly from United States to Rosario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $735. If you’re not able to fly to Rosario in January, then November is your next best option. Flight prices from United States to Rosario during November average around $826.
The cheapest day to depart on your flight to Rosario is on a Monday when prices can be found for as low as $797. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from United States because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,090.
The cheapest time of day to fly to Rosario is in the afternoon when flights can be purchased for as low as $808. In contrast, the most expensive time of day to depart to Rosario is at noon when prices are around $1,136.