Dummy ticket to Thailand Why do I need it?

When you visit Thailand the officers will ask you 99% of the time for a return ticket aka a dummy ticket. Be smart and bring it beforehand to avoid any rejection of your flight to Thailand. This can be useful also for extending your visa there they will ask you for proof of flight ticket. bring it with you.

What Airport should I choose?

You can choose any airport in any city in Thailand. But it recommends to use city of Bangkok and the airport (DMK) or (BKK) Because there are plenty of flights on these 2 airports both cities in Bangkok. That being said you can find many flights in other cities like Chaing Mai or Phuket.

How to choose another Airport when searching for a dummy ticket in Thailand?

Suvarnabhumi Airport BKK

Don Mueang International Airport DMK

Phuket International Airport HKT

Chiang Mai International Airport.

Is a return flight ticket from Thailand is mandatory?

Yes. They will ask you all the time don't make a mistake and don't bring it.