On most commercial airlines, onboard Wi-Fi is only fast enough to check your email or update your Facebook status. Try to stream a movie and you may find your laptop buffering from Burbank, Calif., to Phoenix.

But that may be changing soon, as onboard connectivity companies increasingly shift away from slower ground-based Internet systems to satellite-based systems that could increase speeds more than 2,000 percent.

The industry leader, Chicago-based Gogo, provides in-flight Wi-Fi for more than 70 percent of the nation’s airlines, about 2,400 planes. But most of the planes served by Gogo rely on ground-based cell towers that offer speeds of about 3 megabits per second.

At that speed, a 4-gigabyte movie could take three hours to download.

Next year, Gogo plans to launch a satellite-based Wi-Fi system that can offer speeds of up to 70 megabits per second. Seven airlines have already committed to testing the system on a trial basis or installing it in their entire fleet, Gogo spokesman Steve Nolan said.

Gogo is not the only Wi-Fi provider that promises to turbocharge the service.

Los Angeles-based Global Eagle Entertainment announced recently that it had reached an agreement with Boeing Co. to install its satellite-based Wi-Fi system in the factory on new 737 planes, among the world’s most popular commercial aircraft.

Lake Forest, Calif.-based Panasonic Avionics, which provides satellite-based Wi-Fi technology on 800 planes worldwide, plans to unveil an advanced aircraft antenna next month. Working with specially designed high-throughput satellites, Panasonic systems says it can offer Wi-Fi speeds as high as 200 megabits per second.

One of the biggest hurdles to increasing onboard Internet speeds is that airlines that want to switch to satellite-based Wi-Fi must take planes out of service to install the new equipment. Don’t expect the nation’s commercial fleet to make the switch quickly.

And it is not clear if the faster Wi-Fi speeds will mean higher Wi-Fi fees.

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Hugo Martin, Los Angeles Times