They're a little late to the party, but Continental will soon be offering wireless internet on some flights.
Starting in Q2 2010, 21 of their Boeing 757-300s will be outfitted with Gogo, the same service used by American, United, Delta, and AirTran. The planes travel mostly domestic routes, and a Wi-Fi connection will start at $US4.95. Better late than never, guys! [SlashGear]