Originally Posted by
flyaxa
Spoke with Air Tran and it seems for international flights, one cannot check in online. You can only check in at the airport...which should put us back in the C boarding group.
Can you purchase Priority Boarding?
Priority Boarding Option — for discount coach and sale fares
Once you have a seat assignment, if you will be boarding with our general zones, you have the option to stow your bags and settle into your seat sooner. Opt into Priority Boarding during check-in and you’ll be upgraded to boarding zone 2 from general boarding -- Priority Boarding is $10.00 per passenger.
Logically that should equate to Early Bird Check in
We'll automatically check you in and assign your boarding position within 36 hours of your flight's departure - that's 12 hours before general boarding positions become available. While EarlyBird Check-In doesn't guarantee an A boarding position, it improves your seat selection options to help you get your favorite seat.
However be sure before you do it. the links between Airtran and Southwest don't always work as expected.
DISCLAIMER: I've never done this so I'm only guessing, but then so are many of the Airtran/Southwest employees.