The Singapore Air Travel Pass (ATS), which allows foreigners who are either permanent or short-term residents of the following countries to apply for entry to Singapore, is a form of travel pass that allows them to enter the country. The Singapore Pass can be purchased at a fixed price through authorized online portals and selected travel agents. The Singapore Pass has many benefits. The Singapore Pass has many benefits. Tourists can enter Singapore without a visa. The Singapore Pass also offers the convenience of visiting within and outside Singapore during a specified period of time, without having to acquire a visa.