Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Newark Airport to Ipoh as you normally would.
Located just 1.3 mi from the city center, Ipoh is the airport most travelers will use when flying to Ipoh from Newark. Booking flights from Newark to Ipoh (IPH) should be relatively easy as there are 0 daily inbound flights from Newark from 1 airline.