Virgin America Airlines, Delta, American have all launched inflight Internet services in 2008 with big expansions planned in 2009. Aircell CEO Jack Blumenstein recently said some 2,000 commercial aircraft will be offering its Gogo service by year-end 2009 [1].
Links:
[1] http://www.fiercebroadbandwireless.com/story/aircell-ceo-2-000-aircraft-will-offer-gogo-year-end/2008-08-27