Hi claveygirl,
I suggest you go to Google. com and enter cheaptickets.
You'll see that they'll ask for the name of the Airport you're flying from. You put Seattle Wa and destination Ft. Myers, Florida. It will ask you for the date of travel, etc.
I did this and found out that Delta,the least expensive, Alaska, the most expensive, Continental Airlines, US Airways and Northwest Airlines have the flights you're looking for.
