Spirit axed flying to these 15 cities as it navigates a 2nd bankruptcy in less than a year

• Spirit cut flying to 15 cities as it navigates its second bankruptcy since November. • The airline's latest airport exits are Hartford, Connecticut, and Minneapolis. • Spirit's whiplash business is bad for customers but beneficial for competitors.

Spirit Airlines' second Chapter 11 bankruptcy in less than a year is creating whiplash as more customers lose access to low fares.

The Florida-based ultra-low-cost carrier has been entering and exiting markets for months as it attempts to focus on more profitable routes and dig its way out of a financial crisis.

Spirit CEO Dave Davis said in a memo to staff in mid-September that the carrier would slash a fourth of its flying by November compared to a year before.

Spirit confirmed to Business Insider on Wednesday that its latest cuts wil