Do I need to book a flight beforehand for a Non-O visa application?

When applying for a Non-O visa for Thailand, it is not necessary to book a flight beforehand. You can provide a flight number of a flight you anticipate using without having an actual ticket. Many have suggested looking up a random flight number or using intended travel dates. However, some applicants have experienced situations where they were later asked to provide proof of booking, such as a ticket confirmation. It's advisable to check with your specific application method, as different embassies may have varying requirements.