Due to multiple factors, expect to potentially pay more when booking in October. For low rates, August can be a great choice for travel to Pullman. Flights to Pullman from Newark Airport in August are about $558 on average during August, but can be found for as low as $229.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Newark Airport to Pullman as you normally would.