Entry requirements are the single category of travel information most likely to be stale the moment it's written down. Rather than stating specific rules that could be outdated by the time you read this, here's what to actually verify and where.
Check these four things before you fly
- Passport validity requirement — confirm with your airline; many enforce a 6-month-validity rule regardless of Mexico's own minimum.
- FMM tourist card process — confirm whether your airline issues it digitally, whether you need to fill anything out in advance, and what to keep for departure. See our visa & entry page for the general framework.
- Any destination-specific health or customs forms — occasionally required temporarily; check your airline's latest travel advisory a few days before flying, not weeks.
- Your own country's re-entry requirements — sometimes the more overlooked half of the checklist.
Where to check, not just when
Mexico's National Immigration Institute (INM), your airline's official travel advisories page, and your home country's foreign travel advisory service are the three sources worth checking directly — not forum posts or trip reports, which go stale within months.