Originally Posted by
HDQDD
Fly an airline that scans its bags at the carousel. I know Delta does (and you can see it in their app). You can also see if it was scanned on the same flight you were on, if it wasn't then you should file a claim and go home. I assume some other airlines probably do this by now as well, I just don't know which ones.
That's not an option as your bag will have to clear Customs. To do that, you need to speak to the airline's baggage counter (who will be able to confirm whether it was on the plane) and, assuming it missed the plane, they will get you to fill out a form which you then take to Customs so as to make a formal declaration of contents. Otherwise the airline won't be able to deliver it to you.