What should I put for the flight number on my DTV visa application if I don't have one yet?

When filling out your DTV visa application, if you're asked for a flight number and you don't have one yet, it's advisable to put the flight number you 'intend' to take rather than leaving it as TBA. Several users suggest that you can use a hypothetical flight number from an airline that travels from your country to Thailand. It's important to note that there's no obligation to stick to that itinerary, as consular officials understand that changes can happen.