Due to my new job, I will commute weekly from GNV (Gainesville, FL) to ATL to spend weekends with my family. The only direct flight is Delta and they charge $386 for round trip. However, the round trip ticket from GNV to NYC via ATL is only $260. My question is: can I buy the ticket and only use the first half part of the flights? Thanks. Also, are there ways to get better fare for commuters? Thanks.