This is by no means how it commonly works. Some planes will "gate check" your carryon, but most of the time that last-minute checked luggage gets checked throug

This is by no means how it commonly works. Some planes will "gate check" your carryon, but most of the time that last-minute checked luggage gets checked through to your final destination. And for the other comment above, the plane certainly WILL leave without you. I travel 60-100K miles per year.