By Air:
Direct flights to Khon Kaen Airport (KKC) are available from Bangkok's Don Mueang (DMK) and Suvarnabhumi (BKK) airports, with airlines like Thai AirAsia, Thai Lion Mentari, Thai VietJet, Thai Smile, and Nok Air. The flight duration is approximately 1 hour to 1 hour 10 minutes. Costs for a one-way ticket typically range from $12 to $49, though they can go up to $120.