Entry paperwork

Just look online. If nothing else, your airline should have the links. Easy.

Oh, if it were only that easy.

A year or two ago when a friend was visiting me, the airline said no FMM forms were needed, so there were none on the plane.

I had told my friend he would need to complete an FMM. I brought him one and will filled it in together when I saw him in Canada.

When the plane landed, migración required FMM forms. My friend was the only one who had one already completed. Everyone else was standing in line, borrowing pens, and filling in forms without any hard surface.

When I have arrived via Mexico City the airline has invariably announced that all luggage had to be collected and taken through aduana. On every occasion my checked luggage has gone through MEX to ZIH without me collecting it.

In my experience, recent real life experiences are more helpful than generic information from airlines.