American Airlines have round trip airfares travelling from Charleston SC (CHS) to Cancun Mexico (CUN) for $244, making 1 stop. This is a basic economy fare. American's Basic Economy fare limits carry-on bags to one small personal item, such as a purse or laptop bag. All other baggage must be checked for a fee.
***Delta Airlines have a slightly higher fare (by a few dollars) also basic economy, however Delta allows a carry-on bag in addition to your small personal item. Delta might be the way to go.
Departs CHS: Dec 1-8, 11-12, Jan 4-7, 9-14, 16-18
Returns: generally 7-day stay
Use dates and plug it into Expedia [expedia.com]
, Orbitz [orbitz.com]
or Priceline [priceline.com]
to see options on flights, prices and availability for American and Delta.