Due to multiple factors, expect to potentially pay more when booking in February. For low rates, June can be a great choice for travel to Whitehorse. Flights to Whitehorse from Syracuse in June are about $1,039 on average during June, but can be found for as low as $412.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Syracuse to Whitehorse as you normally would.