Frontier Group shares surged 15% as investors anticipate gaining market share following Spirit Airlines’ second bankruptcy announcement and route reductions. Deutsche Bank analysts believe Frontier is best positioned to benefit from Spirit’s bankruptcy due to network overlap, upgrading their rating to “buy.” Spirit plans to shrink its footprint and fleet to reduce debt.

Raymond James analyst Savanthi Syth predicts some of Spirit’s capacity will be removed, easing pressure on the domestic market. Frontier has the largest seat overlap with Spirit, but there are concerns about the sustainability of ultra-low-cost carriers as costs increase. Frontier has announced 20 new routes for the winter season and is focused on attracting passengers from competitors.

Despite Frontier’s growth, analysts believe full-service carriers like United Airlines and Delta Air are better equipped for the changing U.S. aviation market. The industry awaits further developments as the fallout from Spirit’s bankruptcy continues.

Read more at Yahoo Finance: Frontier surges as rival Spirit’s second bankruptcy stokes market share hopes