Due to multiple factors, expect to potentially pay more when booking in January. For low rates, August can be a great choice for travel to Manchester, New Hampshire. Flights to Manchester, New Hampshire from Saskatoon in August are about C$ 1,003 on average during August, but can be found for as low as C$ 671.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Saskatoon to Manchester, New Hampshire as you normally would.