The budget airline model in the U.S. is running out of runway

Spirit Airlines’ bankruptcy is framed as evidence that ultra-low fares alone are not enough to sustain airline profitability, even as United and Delta perform well. The article suggests the industry’s winners are benefiting from stronger fundamentals rather than just fuel-price moves, while Spirit’s failure points to deeper business-model weaknesses. Overall tone is cautious and selective rather than broadly bearish on airlines.

Analysis

Spirit Airlines’ bankruptcy is framed as evidence that ultra-low fares alone are not enough to sustain airline profitability, even as United and Delta perform well. The article suggests the industry’s winners are benefiting from stronger fundamentals rather than just fuel-price moves, while Spirit’s failure points to deeper business-model weaknesses. Overall tone is cautious and selective rather than broadly bearish on airlines.