Dish Network Corp. is offering free TV aboard Southwest Airlines flights, kicking off the service aboard a Boston-to-Baltimore trip Monday that included “the Boston guys” from Dish’s Hopper commercials as guests.

The Douglas County-based satellite TV company (Nasdaq: DISH) is making a group of television channels and on-demand programming available to Southwest travelers on the airline’s WiFi-enabled Boeing 737s, which is about 75 percent of the domestic carrier’s fleet.