Any advise on air fare to cozumel? Who has the best deal?
That is a big challenge for scuba divers these days, going anywhere. I use Sidestep.com/Kayak.com (same site) to shop for comparisons between airlines with selections that link to buying direct from airline sites usually - but you
cannot trust shopping at airline sites, really. Sidestep does have American fares too, unlike Orbitz as mentioned. Expedia is boycotting American, but I never cared much for Expedia anyway.
And it gets frustrating. Glancing at your choices, American will do it for $426 RT but only if you overnight in DFW both ways = sucks!
When I uncheck the Overnight option, it jumps to $619 RT = sucks also!
When I check your options going thru Cancun tho, never my first choice but possibly acceptable if it will save me $100 or more - the more the better, and uncheck Overnight options, plus adjust return flight to noon or later so I can get back to the airport ok,
now I see Delta for $471 RT. They have a lower fare but it leaves Cancun too early. This one gets you to Cancun by 1:24pm, doesn't return until 12:35pm.
I checked other airports within 100 miles of STL; no help.
The bus & ferries that run are nice, travel time to/from airport to hotel can vary, it's a hassle we Cozumel fanatics call the
bag-drag but it's doable and worth it to be in Coz for a week.

More info at
http://www.scubaboard.com/forums/in...s-cancun-some-cautions-finding-air-fares.html
Right now it's running about $488+ taxes and fees from Ft. Lauderdale. I am hoping they go down a little bit at least.
Our situation is trying to find the best for the three of us that want to fly together. 2 of us in Ft. Lauderdale, one in Texas. It's a wash right now, us flying to Houston> Coz. Or my sister flying to FLL, then we go to Cancun >Coz..
Both of y'all can set up one or more fare alerts at Sidestep that will email you every morning. I think you told you that you haven't flown much?
"Travel broadens the mind and deepens the soul," (I think I made that up myself decades ago; can't find it anywhere else?) and air travel is part of the adventure. Hehe, want to hear some wild tales?
Anyway, there is no need for your sis and you to fly in together. Meet in Coz; just get there the best for each.
Your fare from FLL-CUN did drop to $273 RT. Sweet! Don't be greedy. I always quote with taxes included but I think you were looking at something before taxes when we PMed.
Your sis can fly from IAH-CZM for $453 RT , and CUN is not cheap enough at $397 RT to go for that.
It'd cost $330 RT for your sis to fly IAH-CZM to then fly with you to CUN for $273 RT more so no point there - unless she
wanted to spend some time in Florida too, then I would suggest a three leg tickets: IAH-FLL, FLL-CUN, CZM-IAH, which is doable for less.
Just consider air travel as part of the sport of scuba. I once left the house at 2am to catch a 5am flight to CUN, bus into Cancun city, cab to a dentist office, spent the afternoon there, cab back to bus, bus to Playa del Carmen, ferry to Coz, cab to hotel, and was on time for the 8am boat the next day - with camera! And that was with a plane change in Houston; most of y'all can fly Non-stop to CUN.
The important thing is to get there, as reasonably and cheaply as possible, but get there. Yeah, adventures expand at times, but live and learn as you go, then file Trip Insurance claims on any extra costs late.
