The Airport Rail Link will start running commercially on December 6, charging Bt150 for the through train and Bt15-Bt45 for the stopper, according to distance.
Transport Ministry deputy permanent secretary Tawalyarat Onsira, who is chairman of the State Railway of Thailand, said the elevated system would link Suvarnabhumi Airport with the City Air Terminal in Bangkok's Makkasan district.
He said construction was 98 per cent complete.
The SRT board urged haste in recruiting staff to operate the system and complete installation of the security system.
The SRT will submit a plan to set up a subsidiary to operate the system to the Cabinet this week.
Tawalyarat said the Cabinet had approved a budget of Bt115 million for improving road access to stations, which was expected to be done quickly except for Makkasan Station's entrances on Rama IX Road and Petchburi Road, for which a consultant would have to be hired.