Delta Air Lines will provide free Wi-Fi service on most of its U.S. flights starting in February.The airline said Thursday that by the end of the year it will outfit more than 700 planes with high-speed, satellite-based broadband service from T-Mobile and plans to expand free Wi-Fi to international and Delta Connection flights by the end of 2024.- Delta making it harder to get into its airport lounges- Delta pilots authorize strike "if necessary," as contract negotiations continueThe service will use equipment from Viasat, a U.S.-based satellite broadband provider.New York-based JetBlue Airways already provides free Wi-Fi service to passengers, but Delta's announcement puts it ahead of its largest rivals: American, United and Southwest.Customers will need an account in Delta's SkyMiles frequent-flyer program, which is free to join, to use the Wi-Fi service."