What should I consider when booking my return flight if I plan to stay in Thailand for nearly four months?

You can't stay for 3 and a half months. 90 days is about it at the moment and with Vietnam, Malaysia, Singapore, Laos and Myanmar closed you can't do a border bounce to extend your time in Thailand. Not sure how immigration would consider flights booked to closed countries. You could travel to Cambodia but it would require quarantine on return and multiple PCR tests ie before you travel to Cambodia, once you arrive in Cambodia, before you return back to Thailand, once you arrive back in Thailand and a couple of times during your first 7 days back in Thailand. Costs for these tests soon mount up

Not sure if things have changed but you used to require POOT before the 30th day of your stay. Proof of Onward Travel.We have been asked for this on previous trips.

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Hi lads a question whether there will be problems at the airport cheek in desk when boarding if I have a return ticket in 60 days since I am going to make an additional visa for 30 days. Or I must bay only 30 days return...then change any advise..please.

Don't waste your time

There are 3 places this can be a problem for you, but 2 of them are 99% not going to be any issue.

First is Thailand Pass, who can require your flight to meet your visa, but since they don't ask about your visa, it shouldn't matter.

Second is when you apply for your visa, the embassy/consulate may ask to see onward travel that meets the duration of your visa, but most of the time they don't ask either.

Third is your airline. When you go to check in they are going to ask to see a LOT of paperwork because the airlines are being super-vigilant right now in checking and double checking everything. If for some reason you are denied entry they will be penalized, so there are many reports in this group of people being forced to purchase a ticket as they stand there or miss their flight altogether if they didn't have it.

My suggestion is to find a solution that shows onward travel within your 60 days, and this can take many forms. A bus ticket out of Thailand, okay. A plane ticket to Singapore even if Singapore is closed at the time, okay. A ticket from one of the onward travel services you can find on Google, also okay. Just be prepared to either have proof, or be able to get proof in a matter of minutes to prevent disaster.

Some people say to have an onward travel ticket allowed from your initial visa, let’s assume 60 days. Some people also (myself included) book for 90 days because the 30 day extension is pretty straightforward.

Your best bet is to book your flight for the dates that you want and buy a secondary ticket for onward travel, I bought a cheap ticket to KL for proof of onward.

I came in Nov, my return flight is April. I bought a one way ticket in February to KL that I likely won’t use.

With a tourist visa you can only stay maximum 90 days, or are you coming in on an STV?