I live 15 minutes from the Grand Rapids airport but I will gladly drive 2.5 hours to Detroit so I can fly AirTran!
I used the $25 coupons (had one sent to me and one to my 6 year old DD

) and I was able to book round trip to Orlando for a total of $69.20

!
I am hoping that they move my inbound flight earlier (but it is currently scheduled for a 1:40pm departure so it is not too late) and I REALLY hope they move my return flight later. I am not looking forward to a 10:30am flight, but since I need to be back in GR at a reasonable time (kids have school in the morning) I can tolerate the early flight.
Just keep an eye on their schedules and call them as soon as you see a time change that won't work for you. They will let you switch to a different flight for no charge. For our June trip (2009) I had booked the afternoon non-stop for $59 even though I wanted the morning non-stop ($129). I was OK with the afternoon flight, but I was hoping that it would change times so that I could get the morning flight. When I saw that it changed by 13 minutes, I called and they gave me the morning flight at no charge. Every time AT has changed my times, it has ended up working out to my advantage in the end so I have no complaints. You just have to be prepared and know your options if they make changes on you.