How can I book flights and accommodation for a 90-day e-visa in Thailand without knowing the processing time?

Hi i just applied 8 days ago book your flight one way then i just booked a cheap flight to Cambodia as the onward flight, just incase and pay for it , book your hotel with free cancellation i have 2 days bangkok then 28 days Hua hin and the rest i will sort out

Just SHOW your planned date of departure flights to Thailand... and the first week of your stay in Thailand. DON'T BOOK. As you appear to be carrying an Australia PASSPORT, the Thai Embassy and Consulates in AU are VERY helpful.

the visa is valid for 3 months from the date they issue it, the system will let you upload tentative bookings (reservations you make without paying) and most embassies accept that as far as how long different embassies take to process eVisa applications GO to the website of the embassy you're applying thru and read their posted processing time Another thing that affects the processing time is YOU, if you upload what they want, where they want it, etc. IF they have to email you for more or additional documentation it can push the processing time out

Australia so via Canberra

Which country are you applying from? I know for the london embassy they want actual flights not just potential flights so you have to show a booking.

You need full confirmation of travel itinerary as I had to when I applied as first time i just put the flight numbers without. Booking so got asked again for more documents. And the documents where another photo from mobile. Selfie and proof of flight travel as I had already sent my 2 week hotel stay until I found a long term stay once I got to Thailand

I am curious as to what your basing the visa.