you are welcome !

but when come back from savannakhet you probably have to go to a pick up point by yourself which is designated by nok air in mudahan town area. example airasia van doesn't go to the checkpoint to pick me up. I have to take the bus all the way to mudahan town area then take a motor bike taxi the hotel pick up point. ( I have no idea how nok air do the arrangements ) you can give them a call to confirm the transfer is done

you can buy the whole trip together all the way to mudahan border when you purchase the air ticket with nok air. I don't think airasia fly to nakhon pathnom.

nok air - surat thani to nakhon pathnom by air then nakhon pathnom to mudahan border checkpoint by van ( airport transfer). at checkpoint grab the cross border bus at 50 baht all the way to savannakhet bus station.

not sure about nok but for air asia no problem provided they have seat available

@Tod ********

...... you can but have to pay the price of transfer. lots of people did that when I was at the airport last time

not too sure whether you fly direct from Surat thani or not

last I took was from Bangkok to nakhon pathnom then airport van transfer to mudahan immigration checkpoint...... but take note if you return from savannahkhet and if want the airport van transfer you must go the hotel waiting point upon coming into Thailand. they will send to checkpoint but they won't pick you from checkpoint

if you are taking flight like airasia or nok air there is an option to buy a transfer from nakhon pathnom to mudahan by van for additional of 400 baht

from savannahkhet bus station to mudahan bus station