I am not a frequent flyer I fly about 1-2 times a year from Atlanta, Georgia to Bogota, Colomba. I am currently in Colombia about to purchase a ticket to return to Atlanta (first week of August) (I did not buy a round trip ticket because I did not know when I would return home). However my question is where can I buy the cheapest one way ticket? I was searching on some sites ie: orbitz, travelocity, and I found some good rates to Miami via Spirit Airlines, then I looked at Airtran to buy a ticket from Miami to Atlanta, however doing all of that after baggage charges for Airtran I would only save 20$. My question is, Is there any non advertised location to purchase airfare for less or are there any secrets to getting a better deal?