You can try wireless internet on Delta Airlines flights with Gogo WiFi service ($12.99 value)
In order to use it:
1. Enable the WiFi on your laptop or mobile device and select “gogoinflight.”
2. Launch your browser, locate the promo code at right, and jot it down.
3. Click “Buy” to create an account.
4. Enter promo code on “Payment info” page (case sensitive).
5. Click “Update Total.”
The offer expires on 12/31/09.