Delta Airlines offers Wi-Fi on select aircraft, with complimentary service on most routes. In some areas, there may be an extra fee, but eligible travelers can connect easily. Passengers can enjoy Delta WiFi on international flights without any hassle. They can book a flight via the Delta Airlines official website. For more detailed information about free Wi-Fi, one can speak on the phone call with the dedicated customer service team or read the blog mentioned at the link by Airlines Group Travel.