Interest in CLEAR is surging as airport chaos continues across the US

Security lines at airports across the US have added hours to travelers' schedules. Customers are showing historic interest in apps to save time, even though some aren't operating fully.

Melissa Phillip/Houston Chronicle via Getty Images

• Search interest in CLEAR is spiking as airport security lines stretch for hours.
• CLEAR lets travelers bypass the standard TSA ID check at around 60 airports.
• Houston's George Bush Airport — one of the hardest hit by long lines — shut down CLEAR for Monday.