If you go for a SETV (60 days), lets say in HCM (+ 30 days at immigration later on), must you then show a return flight ticket that is valid after 60 days or 90 days?
TLDR : Answer Summary
When entering Thailand on a Single Entry Tourist Visa (SETV) for 60 days, proof of onward travel may be requested either at the Thai consulate when applying for the visa or upon arriving in Thailand. Generally, you can show a ticket that is valid for up to 90 days from the entry stamp, given that you can potentially extend your stay for an additional 30 days. However, there is no strict requirement that proof of onward travel must be dated after the 60-day stamp, and this can depend on the discretion of the immigration officer. It is advisable to have a flexible or refundable ticket as evidence of onward travel.