It is hard (but probably not impossible) to start a “Leavin’ on a Jet Plane” sing-along. However, mentioning the ironic nature of John Denver penning the song doesn’t go over so well.
If you think your plane may be taxiing excessively before departure, it’s acceptable to verbally confirm with a fellow passenger that you didn’t accidentally wander onto a bus. But not too loudly.
It is fun but inappropriate to throw your arms up rollercoaster-style upon takeoff. In case you are seized by the urge, make sure you have enough head-room so that your wrists don’t conk against the overhead luggage bins.
And screaming is out. Trust me.
If you don’t want to talk to your fellow passenger, pick up a wonky-wonk magazine like Foreign Affairs or The New Yorker. They will pigeonhole you as a hopeless nerd and you can continue on your way.