Phillip9

I think whether or not she will need a copy of the TM30 depends of the Immigration office she extends at. I've never been asked for it in the 10+ times I've extended a visa exempt entry.

Thanks for the info. I assume I wouldn't get an overstay stamp for one day late then? I think I can depart just one day late, but still not sure if that flight will be cancelled also.

Correct, I was notified in advance before I went to the airport.

I currently have my departure flight cancelled due to a typhoon in Hong Kong. All flights to Hong Kong are cancelled today. Does anyone know if I will still get an overstay fine / stamp on my passport if I leave a day or two late due to this. I arrived visa exempt and have already used my one extension. I would really prefer not to get an overstay stamp on my passport. I could fly to an alternate country if I have to, but that would obviously be at significant extra expense. I am considering just waiting for the next available flight.

When I checked Thai a couple of months ago they didn't offer any fully refundable fares. Flex usually means you can change the date with no fee but refunds still have a fee.

Keep in mind that it currently takes 2 - 4 months to renew a US passport if you are living in the USA. Based on posts by others here it seems to be much easier and quicker to renew your US passport if you are living in Thailand. https://travel.state.gov/content/travel/en/passports/how-apply/processing-times.html

When entering Thailand on a one way ticket, I usually book a fully refundable onward ticket to KL with Malaysian airlines and then refund it once I arrive. They offer fully refundable fares, have easy booking and super easy refunds. Just make sure to book on their website and make sure to choose a refundable fare. Other airlines with fully refundable tickets I am aware of are qatar, emirates, ethiopian and delta. Just again always make sure to book on the airlines website and choose a refundable fare. There is absolutely no reason to book a renta ticket or throw away ticket that are frequently recommended here.

True, refundable tickets cost a bit more, but they are not ridiculously expensive. When entering Thailand on a one way ticket, I can usually find a fully refundable onward ticket to a nearby destination for about 4000 baht. But I just put that on my credit card and refund it as soon as I arrive (which takes a few clicks and less than a minute of my time). The whole thing costs nothing, takes about the same effort as buying a rent a flight, and you get the added benefit of having a real usable ticket incase questioned by an immigration officer upon arrival.

I can never understand why people don't buy a fully refundable onward ticket and then just refund it when you get to Thailand. I've done this many times when traveling on one way tickets to various countries. It ends up costing nothing, you get a real onward ticket, and you can buy it as far in advance as you want.