Photo by Kuster & Wildhaber Photography/Flickr Creative Commons
Since the FAA allowed gadget use during takeoff and landing, Wi-Fi on some airlines do not work below 10,000 feet. Those who are supplied by Gogo have antennas that are currently set up to send Wi-Fi to planes while in cruising altitude and not on the ground. The carriers include Air Canada, AirTran Airways, Alaska Airlines, American Airlines, Delta Air Lines, Frontier Airlines, United Airlines, US Airlines, and Virgin America.
Meanwhile, Allegiant and Southwest Airlines use Global Eagle Entertainment’s wireless internet system that works at all altitudes.
Source: Business Insider