The last few times I've flown it was on SWA and planned do try to book them again. However the $25 coupon for Air Tran has me thinking... I know AT has fees to check luggage and often changes flights. Is there anything else I'm missing that may give SWA an even bigger edge?
To me, if the costs of the flights are somewhat close (after adding in the cost for checking a couple of bags for our family), I would prefer to go with Airtran. But it really depends on your travel habits and preferences.
For one thing, I like being able to reserve my seat ahead of time to ensure we are all sitting together (either free through kayak or by paying $6 per person). I know that you can go on SW exactly 24 hours before your flight and get an A boarding pass and be in good shape. However, when I am getting ready to go on vacation, or am on my last day of vacation, I have enough going on that I don't want to have to worry about missing that exact 24 hour time for check-in.
Also, the fact that SW gives you credits if the cost goes down doesn't really appeal to me that much. We fly probably once every three or four years, so any SW credit would probably go to waste. If you travel a lot, that is a nice perk that SW offers.
Like SW, Airtran also offers free beverages, and last time I flew they gave free snacks too (although I'm not sure the free snacks airlines give out are really a perk).
We are not on a real tight schedule, so the flight changes with Airtran don't really bother me too much. If you need a really solid schedule, then SW is nice in that regard. We booked our flights on Airtran in February for our trip in September. So far they have changed our flight times 3 times. Our departing flight is now leaving 8 minutes earlier than we originally planned, and our returning flight is now leaving 13 minutes earlier than we originally planned. Our layover in Atlanta on the way home sas gone from 47 minutes to 56 minutes. Although there are some exceptions, I think that Airtran's famous flight changes are kind of overblown, and generally are no more than just a few minutes either way.
I like both airlines, and have flown both airlines, and would fly both again. Each has its positives and its negatives. If the cost is close, and I'm not on a really tight schedule,then I prefer Airtran - especially if I'm traveling with my family. But I have absolutely no problem going with SW either.