American Airlines said Tuesday it’s developing its in-flight Wi-Fi service to the 15 Boeing 767-200 planes that fly primarily transcontinental flights connecting New York with Los Angeles, San Francisco and Miami, and will decide in three to six months whether to expand the service to other routes or not.

The Wi-Fi service is called Gogo and was provided by Aircell LLC. Gogo connects each plane's Wi-Fi hot spot to the ground over a 3 MHz signal that connects to Aircell's network of 92 cell towers throughout the continental U.S. Each Gogo session includes full Internet access. Cell phone and Voice over the Internet are not available.

This Wednesday’s launch makes the service available for $12.95 per flight.

"Today the days of being cut off from the rest of the world while in the air become history," said Jack Blumenstein, chief executive of Aircell LLC, the company providing Internet services for American and other airlines. This service uses three antennae installed on the outside of the aircraft which communicate with 92 cellular towers on the ground.

"Passengers will experience speeds similar to the mobile broadband experience on the ground," the company says in a statement.

Earlier this month Delta announced that it would also be implementing Aircell's Gogo service on its flights beginning this fall. The price will be the same, except for flights less than three hours where the flat rate is $9.95.

JetBlue currently uses a similar technology to offer in-flight connectivity, mostly for e-mail and text messages, on one of its planes.