award ticket and using business class vouchers

Subscribe
Oct 31, 2013 | 12:50 pm
  #1  
If I book my Airtran ticket with award points, can I use the business class vouchers to upgrade to BC 24 hours prior flight? The vouchers are the ones I received for opening a credit card.

Or are the vouchers only good for cash flights?

Thanks!
Oct 31, 2013 | 1:47 pm
  #2  
I imagine they are good on all flights but if the Vouchers don't say, call Airtran and Ask.