Canada is high up on the list of evac places, and Toronto would be the airport. Reason for this would be related to people on the plane and their situations. For example, if someone looses their US waiver (good portion of people here are UK/Irish/Aussy/Kiwi's/etc that would require a waiver to get into the US).

Leaving the caymans in shorts in October (around 28-31c) and landing in Toronto when its 5-10c out is a shock! At least for me. I am climatized to the carib weather that anything under 25c is sweater weather. Family back in Canada laugh at me now - i'm ok with that cause I live here!

Miami would be the perferred choice as they can do two or more runs in the same period as one run to Toronto and back.

Mexico is an option, but not high on the list as the flight situation from Mexico to other locations isn't a great as Miami or Toronto.