American Airlines have round trip airfares travelling from Cleveland OH (CLE) to Cozumel Mexico (CZM) for $344, making 1 stop. This is a regular, main cabin economy fare. The 'basic economy fare' option is there but $10 less if you prefer.
Departs CLE: March 16, 17, 20; April 5, 7-9, 12-16, 21, 23, 27-30; May 4-7, 11-14; June 2, 4, 9; July 28; Aug 4, 10-12, 17-20, 24-26; wide availabilyt Sept thru Nov 13 (not much on Wednesdays) and then again Dec 1-12.
Returns: wide and good availability, generally a 7 day stay works!
Use dates and book it on Priceline [priceline.com]
, Expedia [expedia.com]
or American Airlines [aa.com]
. Be sure you upgrade for $10 because it will return the basic economy fare first. Bundling hotel with airfare will save money.