Over 20 million travelers are affected by overbooked flights each year. Of those, nearly a third—about 6.6 million—aren’t allowed on board at all.

An avid traveler has revealed what ‘SSSS’ means on your boarding pass – and why you want to avoid it. Chloe Jade Meltzer, 30, ...

Chloe Jade Meltzer, 30, a travel blogger from New York City, has revealed what ‘SSSS’ means on your boarding pass — and why you want to avoid it. The letters stand for secondary security screening ...