Frontier Airlines flight attendants voted overwhelmingly to authorize union leaders to call for a strike. Here's what travelers need to know.

Frontier Airlines flight attendants voted to authorize a strike over a business model change they say has resulted in less pay, the Association of Flight Attendants announced Wednesday. The vote was spurred by the Denver-based airline switching to a business model that includes more one-day trips and fewer multi-day trips for flight attendants,

The disruption happened on Monday evening shortly after Frontier Airlines Flight 3581 had taken off from John Wayne Airport in Santa Ana, Calif., bound for San Francisco International Airport and resulted in an emergency landing at Ontario International Airport, about 30 miles northeast of Santa Ana.