Wi-Fi availability on U.S. airlines.

Currently, about 1,700 planes in the U.S. have Internet access, including the entire fleets of Virgin America and AirTran, Delta Air Lines’ entire domestic fleet, and a sizable number of planes flown by American and Southwest Airlines.

Here’s a look at Wi-Fi availability on U.S. airlines:

Virgin America – 50 aircraft with 100%. Also has standard power outlets

Alaska – 110 aircraft with 92%. All except freighters and combination passenger/freight planes

Delta – 557 aircraft and 79%, with 100% of mainline domestic fleet; also equipped 37% of its regional jet fleet

American – 321 aircraft with 53%. Up to 400 aircraft installed by the end of this year Southwest – 340 aircraft with 49%. Includes AirTran, which has 100% coverage on its 140 planes

US Airways – 63 aircraft with 19%. Airbus A321 planes only; plans to expand to Airbus A319 and A320, as well as Embraer 190 jets and some smaller regional jets by the end of next year.

United – 13 aircraft with 2%. Available only on p.s. aircraft; going to satellite-based system to provide global coverage.

JetBlue – 0 aircraft with 0%. Plans to begin installing satellite-based system late this year.

Also see our Airline In-Flight ServicesSeating, Comfort & In-Flight Entertainment provides details about seating on over 130 airlines and 750 different jetliners worldwide. Aircraft seating information includes seat pitch, width, recline angle, type of seat, plus entertainment, power, communications and WiFi.