Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Killeen to Lake Charles as you normally would.
GRK and LCH are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. GRK to LCH refers to a flight route from Killeen Fort Hood Regional Airport to Lake Charles Airport.