ATLANTA – Delta Air Lines Inc. said Tuesday it will offer broadband wireless Internet access on its entire domestic mainline fleet by the middle of next year. Atlanta-based Delta said Wi-Fi service will be offered to for a fee to customers traveling throughout the continental US.

The system will allow Delta customers traveling with Wi-Fi enabled devices such as laptops, smartphones and PDAs to access the Internet while in flight.

American Airlines, Texas-based will offer the same Wi-Fi service as Delta through Arcell later this year in 15 of its 767-200 aircraft, which generally fly transcontinental routes, spokeswoman September Wade said, adding that American announced its plan more than a year ago.

New York-based JetBlue Airways Corp. offers free Wi-Fi service on one aircraft that generally flies transcontinental routes, spokesman Sebastian white said. Arizona-based US Airways Group Inc. plans to offer Wi-Fi service on a trial basis on one Airbus aircraft in the fall, spokeswoman Michelle Mohr said.