Following the pandemic crisis, the CAAT has rearranged schedules for each airport in Thailand.
7am to 7pm (18 airports): Nan Nakhon, Phitsanulok l, Phrae, Mae Sot, Mae Hong Son, Lampang, Khon Kaen, Nakhon Phanom, Buri Ram, Roi Et, Loei, Sakon Nakhon, Udon Thani, Ubon Ratchathani, Chumphon, Trang, Nakhon Si Thammarat and Ranong
5am to midnight: Surat Thani Airport
6am to 6pm: Hua Hin Airport
6am to 10pm: Samui Airport
6am to midnight: Chiang Mai Airport and Hat Yai Airport.
Open 24 hours: Krabi, U-Tapao, Chiang Rai, Don Mueang and Suvarnabhumi Airport.
International flights are still not allowed until June 1 and CAAT provides further details on their website.