Singapore Stopover + Cambodia: 2026 Visa Guide for Australians

Yes — and you still need the SGAC. Singapore requires the arrival card from every traveller who clears immigration, including transit passengers who leave the airside zone. If you are doing a pure airside transit (you stay in the international transit area between flights and never tap through immigration at Changi), the SGAC is technically not required. In practice, almost every Aussie traveller who arrives on a long-haul out of Sydney or Melbourne with several hours before the Phnom Penh connection ends up clearing immigration to use the Jewel terminal or the airport hotel — and the SGAC is needed for that. File it anyway. It is free and takes five minutes.

One or two nights for most Aussies. A single night is enough to break the long-haul, get a proper sleep, eat at a hawker centre, and continue rested. Two nights gives you a full day in town for Marina Bay, the Botanic Gardens, and a proper hawker run. Three nights starts to feel like a separate trip rather than a stopover — fine if that is your shape, but the marginal day-three Singapore experience is less compelling than getting on to Cambodia. The Cambodia Tourist eVisa gives you 30 days of stay window from arrival, so a slightly longer Singapore stop will not eat into your Angkor Wat time.

Yes — two things. First, the Cambodia eVisa itself, which is the visa approval ($80 USD / ~$122 AUD Tourist, three business days, applied online and emailed to you as a PDF). Second, the Cambodia e-Arrival Card, which is a separate 14-field pre-arrival form covering your passport, flight, accommodation, and a customs declaration. Both are mandatory for every air arrival into Cambodia, both are completely separate from the SGAC, and both must be sorted before you board the Singapore-to-Phnom Penh flight. The SGAC covers Singapore only — once you fly out of Changi towards Cambodia, that piece of paperwork is done.