Passengers traveling on a Delta flight can get connected to the WiFi on the plane during their journey, but they have to buy the pass for it. They can book a Delta WiFi Connect pass while making the booking. For connecting to the WiFi, after sitting in the seat, you have to turn on airplane mode on your phone, then turn on the wifi options, then choose "DeltaWifi.com" and enter credentials to connect to it. If you need assistance with WiFi, you can contact Delta customer service or go through the blog on the Airlines Group Travel website.