Spirit Airlines. I have not looked at their site in a long time, because I no longer live in a city they service, but they had great deals. Sign up for their emails. They have a $9 club also I think, check all of that stuff out on their website. Travelocity.com is always a good standby. Northwest, now Delta, is kind of forced to be competetive with Spirit, so you can get decent fares a lot of the time. You might get cheaper if you are willing to connect, but that flight is like an hour and fifteen minutes flying time, do you really want to have to connect?