Gogo cuts up to 54% off Gogo In-Flight Web Service Day Passes, with prices starting at $14.50. That's the best discount we've seen for these day passes, although we've seen several free trials for single trips. (We saw a 15% off a one-day pass in October.) Choose from 2-day passes for $14.50 or 3-day passes for $19.50, which must be redeemed by January 3, 2013. Click here for a list of participating airlines.