To apply for a visa to Cambodia for 4 months, you need to issue an appropriate visa upon arrival. The cost of the visa upon arrival is from 25 to 285 USD.

At Cambodia airports, you can issue a visa upon arrival. In total there are several types of visas in the country: transport A and B, C - guest, business or tourist short-term visa and a national visa D.

A tourist visa is issued for a period of 30 days and costs 20 USD. It can be renewed only once for 30 days. However, upon arrival in Cambodia in major airports, you can get a "business visa" for 35 USD. It is also initially given for 30 days, but it can be extended unlimited number of times for a period of three months to a year without the need to leave Cambodia and make visa-wounds. The extension of a business visa, depending on the term, costs from 150 to 285 USD.