The program uses GoGo's in flight API, so it should work accross all airlines that use GoGo. Just connect to the in flight wifi network (you dont need to pay for it, just connect) and run the program. Some data attributes might not be available accross all airlines.
Supported airlines (according to wikipedia.com)
$ claude mcp add OuterFlightTracker \
-- python -m otcore.mcp_server <graph>