Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Bangkok to Green Bay as you normally would.
Located just 9.5 km from the city centre, Green Bay Austin-Straubel is the airport most travellers will use when flying to Green Bay from Bangkok. Booking flights from Bangkok to Austin-Straubel (GRB) should be relatively easy as there are 0 daily inbound flights from Bangkok from 0 different airlines.