There are numerous international airlines throughout Thailand and both national and international carries service them.

It is possible to travel by bus from most of Thailand’s neighbors; once in Thailand busses link all major cities and towns throughout the kingdom.

Taking a train to Thailand is an interesting option for some travelers to Thailand 

With your own vehicle it is possible to travel from the country where the vehicle is registered into Thailand, assuming you have paperwork to prove vehicle ownership and insurance and you drive to Thailand at an approved border crossing.

If you are looking for a private charter flight to Thailand there are numerous opportunities as most Thailand airports have services for private charter flights in addition to service for normal commercial flights.