Will my 85-day departure flight cause problems during my entry on a 60-day visa exemption in Thailand?

No problem based on our experience.

We planned our 3 month stay in Hua Hin to explore our retirement there.

We booked our return tickets (departure Paris on 24th Septembre 2025. Landed Suvarnabhumi on 25th September. Our return tickets were booked for 21st Décembre 2025).

On TDAC my husband put his return flight while I left it blank on purpose.

We both passed Immigration at Suvarnabhumi without problem and had the 60 days stamped on passeport (stamped: exit Kingdom before 23rd November 2025).

We applied the 30 day extension on 10th of November at Hua Hin Immigration (stamped exit Kingdom before 23rd December). The process was smooth.

We actually stayed 88 days.

Probably not as they very rarely ask to see it. But it is possible.

Do everything the right way? 

Look for a chaeap ticket out of Thai within first 60 days which u can forfeit.

Buy cheapest ticket out for 60th day just throw away don’t use it

No. To both.

No, any problem

I've only been asked once in 33 years of coming here luckily it was one of the few times I had a return flight. I'd make sure you've got enough cash on hand for them , never been asked that either but it's a thing sometimes.

I never had problem coming in same as you 85 days flight home

BUT on the other hand I had a non o visa ( which obviously the airline knew nothing about ) and a 1 way ticket and wasn’t even challenged….so not all airlines are defacto immigration…. ( Etihad )

Airlines are used as defacto immigration control. They get fined if they let you in without proper documentation. So it’s in their best interest to screen for this. It’s not just Thailand they do this for.

@Dave *********

The departure field of the TDAC form is not mandatory, it can be left empty, and your return flight will not be a problem at the Immigration entry booth, in case they ask.

HOWEVER, it might be a problem with your airline. Many airlines will ask you for an onward travel proof out of Thailand within the first 60 days you will be stamped in. They will not allow you to board the flight unless you show either a fake onwardticket (which I do NOT recommend!) or a cheap budget airline one-way flight ticket for example from Hat Yai to Kuala Lumpur that can be booked for $40 Dollar. It does not necessarily have to be a return ticket.

You should contact your airline by email (do not call!) and ask them on their stance, then you will get some reply you can print out and take to the check-in just in case the check-in staff has a different opinion

TDAC is nothing to do with a permission to enter. It's just your passport and arrival info. Problem you may have is showing airline proof of leaving within the 60 days permitted stay.

No, but it may be a problem for your airline. Check with them if they will allow you to board.