I've overstayed about 50 days and have to fly back to the US tonight, in about 4 hours. With apologies to The Kingdom, can I pay the 20k baht fine at the airport? My itinerary is CM to Bangkok to Quatar....so if I can pay at an airport would it be CM or Bangkok.

I know I'm in the wrong, but I'm able to pay and could use the advice all the same. Cheers.

If I have the necessary paper work. Is it possible to cancel a Non-O year extension to the airport before flying out? or I can only do that at Chaeng Wattana?