Due to multiple factors, expect to potentially pay more when booking in November. For low rates, August can be a great choice for travel to South Bend. Flights to South Bend from Oakland, California in August are about $417 on average during August, but can be found for as low as $157.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Oakland, California to South Bend as you normally would.