Traveling to Mexico in January with our LO who will then be 2 1/2. The two options I have for a return flight are a 4 1/2 layover or a 1 hour layover. Obviously the 1 hour layover is more ideal but it doesn't leave us much time to get through customs and on to the next flight. Which would you choose?
Re: WWYD
Definitely the 4.5 hour layover. Having traveled internationally through U.S. customs probably close to 30 times over the last 15 years, 1 hour is not giving yourself enough time to get through customs and make it to your connecting flight. I usually look for connection times of at least 2 hours - longer if you are not a U.S. citizen or permanent resident. You need time to not just get through immigration and customs, you will also likely have to change terminals, check in luggage for your connecting flight and go through airport security.
Now, if you have frequent flyer status on the airline you are traveling on and there are multiple flights after the one you are trying to catch, then you could risk it because there is a good chance you might be able to get on another flight with stand by. However, given that you are traveling with a child, I would opt for the longer layover. It sucks but maybe you can eat at a restaurant, walk around the airport etc.