Originally Posted by
glennaa11
This should probably be moved to the Thailand forum for the most accurate answer.
Actually I believe for some flights you can clear customs/immigration at your ultimate destination (including CNX and HKT). But some of the Thailand experts can answer that definitively.
You can not clear immigration at your ultimate destination.
Immigration is done at first port of entry, BKK in this case.
Thai Smiles flies from BKK (Suvarnabhumi) airport and bags can be interlined if they have a agreement.
Otherwise you have to recheck your bags in Bangkok.