I am planning eight nights in Bangkok and Chiang Mai in January, landing at Suvarnabhumi and leaving on a confirmed flight, and I am comparing an online application with any airport route. I feel anxious about finding that an arrival option does not cover my Indian passport or entry point, so I want to check documents, dates and stay conditions before booking.
Compare the current options using passport, residence, entry point, purpose and dates; an arrival route may not exist for every nationality or airport. Use the official portal to review the required passport scan, photo, itinerary, accommodation, funds, permitted stay and any stated timing, then keep a submission record. Do not treat an estimate as a guarantee or pay a third party before confirming the route. Recheck close to departure because documents, fees and entry conditions can change: https://www.thaievisa.go.th/.