The Cambodia eVisa and the e-Arrival Card run on two completely different clocks. The visa is approved in 3 business days; the e-Arrival confirmation comes back fast inside a 7-day window. Here is exactly how long each one takes, why the order matters, and how to time both so neither one is the thing that holds up your trip.

They run on two separate clocks. The Cambodia eVisa is approved in 3 business days and delivered as a printable PDF by email — that is the document that takes real lead time, so you apply for it well before your trip. The e-Arrival Card is a short pre-arrival declaration, not a visa, so it clears far faster once you file it; you submit it within the 7 days before you land. The practical order for an American is simple: get the eVisa approved first, then file the e-Arrival Card in the final week. You need both for entry, and they are checked together at the immigration desk, but only the visa carries a multi-day approval window you have to plan around.



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