Originally Posted by DallasBill
Also: Sun Country Airlines is an option to look into if you are building your own flights. They fly to Cancun and Cozumel from many U.S. cities, including Dallas. You may be able to get a cheaper total flight package combining AA or United out of Calgary
Only trouble with this is that you'll then have to pay Canada-U.S. AND U.S.-Mexico transborder fees and taxes. Either one of which is horrendous enough as it is, let alone Canada-Mexico fees & taxes which is ba enough already. Unless the savings are really good.....