
The court said the seven-hour ban on night flights would affect 100,000 passengers and nearly 170 flights on average per day, arguing it would go against the kingdom's commitment to becoming a major aviation hub.
"It will affect Thailand's global aviation commitment, and could trigger retaliation" from airliners and travellers, according to the court ruling said.
Residents near the airport have demanded state compensation to help pay for the soundproofing of their homes or eventual relocation to other areas.
The Suvarnabhumi Airport opened in September 2006 with Thailand hoping it would establish Bangkok as Southeast Asia's pre-eminent air hub.