Yeah, it's just too early to book. You find your best air fares a month or two in advance if you're flexible. I know, we like to plan ahead on our biggest joy rides - but even if you do book now, no airline is required to keep the schedule. They change whatever they want to, so be very sure your email address is on your reservation, watch for their emails, and check your reservation record often. Then you have to change plans with your hotel, dive op, dog sitter, work, etc. They may well change your flights to different days, or worse - to impossible itineraries. The most notorious are those that give you one hour to clear I&C on a connecting flight - virtually impossible, or leave you sitting in an airport for 8 hours or more.
That said, you can find flights now - if you want to set up a hypothetical plan or go ahead and book - then see what the airline does to you. I guess you'd want to fly out of LAX? Checking the Matrix site, I generally uncheck the option for overnight literariness - but coming from so many time zones away, sometimes you really need to do a red eye with middle of the night flights - just avoid overnight airport layovers.
This far out, the fares are awful looking at 10-14 night trips: $565 leaving on Monday, $580 on Tuesday, $695 Wednesday, $1048 Thursday. Looking at Wednesday to Monday tho, when you select those dates for $695 something evil happens and the fares go up! So instead for $695, it says $1048 - huh? And that's with a long layover in Mexico City - boo!
Obviously something is not working right. Ok ok, I found the problem. By looking for one-way plans from Cozumel to LAX on Monday, December 5. It's too soon. They're not quoting flights after December 2.
You can play with the times and flights and in a few days find your December 5 flights, but you can't believe it even if you find a Monday return - as they can change.
