The Royal Thai Government launched the "Online Application for Visa on Arrival (VOA)" service to facilitate passport holders that are eligible to apply for visas at the immigration checkpoints on arrival for the purpose of tourism. Only passenger arriving in Thailand via Suvarnabhumi Airport can apply for the Visa on Arrival onine prior to arrival in Thailand. The online application can be made at  https://extranet.immigration.go.th/voaonline/voaonline/VoaonlineAction.do