The carrier's decision to be the first of 80 international airlines serving Thailand to use the new airport reflects its confidence in the airport's readiness, which has been questioned by most industry executives and the public at large.

Chief executive Chong Phit Lian described the decision as a deliberate move to gain momentum for an expedient and smooth transition in the relocation to Suvarnabhumi from Bangkok International Airport (Don Muang).

Jetstar Asia's decision was based on Ms Chong's personal inspection of the 125-billion-baht facility. From her perspective as an engineer, she said it should be up and running later this month as planned by the Thai authorities.