Originally Posted by Often1

TIMATIC is critical because it requires all of the variables which you do not specify, e.g., are you a USN, a US resident, what exact date do you exit CUN and what exact day does the passport expire?

Your first barrier is being permitted to board your flight and TIMATIC is what the air carrier relies on, not other websites. It is always a good thing to print out a screen shot of your specific situation.

It is worth noting that there is a "Conditional" warning for your likely situation, requiring a machine-readable passport. Don't know when your current passport was issued, but just want to make sure that yours is.