Well, if you put the bomb as check-in luggage, it can be up to 50lbs (assuming aḷl the security checks will miss a 50 lbs bomb, but hey, in Trumpistan it's possible). Then using Bluetooth makes sense, although you'd have to test whether the signal goes through all the metal, and what if your luggage is placed way in the back and you're sitting way in the front (book a seat in the middle of the plane I guess).

True, blowing up a plane on the ground would ensure a lot of chaos, the airport would definitely be shut, affecting thousands of flights due to the ripple effect. Some years ago there was a suicide bombing at Brussels airport.

Hmm, looking forward to a visit from the men in black, because discussing about this stuff means we're plotting a terror attack, and "due to an abundance of caution" they have to check whether we're threats.