Do I need a return flight within 60 days for a 30-day extension on a 60-day tourist visa in Thailand?

- do I need a return flight within the 60 days or is it ok if my return flight is within the 90 days ?

-> You don't need a return ticket to apply for 30 days tourism extension.

- do I need a TM 30 at Bangkok immigration for the extension ?

-> In most cases yes, you are asked for a TM30 receipt.

If you enter Thailand on a pre-purchased Tourist Visa, you will go to the Chaengwattana Immigration office, Government Complex Building B.

You will go here.



And you can book online



Attached is general information on tourism extension.