[mandeepj]

> then using whatever name you want on a flight with Airline A.

Where do you live? Your boarding pass is scanned at the gate; you can’t just board any flight with your boarding pass from any other flight

[dreamcompiler]

Commenter was talking about buying two different boarding passes. But even so the scheme won't work.

[15155]

You use boarding pass A with a matching ID to get through security and then board an aircraft with boarding pass B with a random name on it.