15 minutes of complimentary access to GOGO Wi-Fi is available aboard Delta Air Lines flights through June 30, 2012, courtesy of vente-privee.
Once the complimentary 15 minutes of access expires, you can still access the Internet web site of Delta Air Lines for free. However, FlyerTalk members impart their tips and tricks for extending free Internet service beyond 15 minutes during your flight.
Be aware, however, that you might experience slower access speeds if many fellow passengers on your flight decide to take advantage of this offer at the same time as you. Still, it is not so bad if you are a patient person — and the price is right!