sayomgplz

Hi I,m Lachezar 30 years old. I have international connection from Istanbul -> Bangkok international airport -> Phnom Penh. I have to wait for 18 hours in Bangkok airport. I wont leave the airport and im using a single ticket ( all the flights are on the same ticket). Do i need a transit visa. I read in some places that if you have more than 12 hours of stay in Bangkok airport you will need a transit visa Best Regards