Direct routes from Vladivostok to Thai Hua Hin, the province of Prachuapkhirikhan, do not - you need to combine the flights with the rail. There is an option to get and without an airplane - by buses with a lot of transfers - but such a road can take up to 5 days, and it can not be attributed to optimal routes.

The shortest route is a flight from Vladivostok Airport (VVO) to Bangkok (BKK), then by train. Moreover, there are no direct flights from Vladivostok to Bangkok: you can choose the flight options with a connection in Seoul, Benin, Hong Kong, Busan from 8 hours 15 minutes to 13 hours 15 minutes with all the overexposures. From Bangkok to Hua Hin there is a direct train, the journey time is 3 hours and 40 minutes. In total, you will spend about 16-17 hours on the way. The budget of the trip is in the range of 16-20 thousand RUB per person.