The popular Thai beach city of Hua Hin is three hours’ drive from Bangkok and its airport currently serves only one domestic route to and from Chiang Mai. BANGKOK: After a years-long hiatus, the Thai beach resort city of Hua Hin could resume international flights this year following a runway upgrade, jumpstarting its tourism sector. Experts say this would help Thailand achieve its aim of developing secondary destinations, and officials including Hua Hin’s mayor welcome the prospect of drawing