AirTran customer service gave me a card for a free trial of in flight Wi-Fi for use on any flight. It does not appear to be a one time use bode, but it does expire today.

The code is 159flg2891.

How to use your complimentary Wi-FI session:

1. Select "gogoinflight" as the wireless network and launch your browser.
2. Sign in or click "Buy" to create a new account
3. On "Payment Info" page,enter cromo code in space provided (code is case sensitive)
4. Click "Update total"