Anyone experience Xanax taking hours to kick in?

I took .5mg of Xanax for a short regional flight on a tiny plane (I’ve freaked out and de-boarded twice from smaller aircraft).

I took the pill maybe 45 minutes before boarding. The flight ended up being cancelled, but I didn’t feel the effects of the Xanax until hours later. If the flight had not been cancelled, basically I would not have felt the Xanax until I landed at my destination.

Is this common? I’ve always read that Xanax kicks in fast. That was my first time taking it. I have another work flight coming up and I want to time the medication right.