Frontier Group Holdings, Inc. (ULCC) saw its stock soar by 5.22% in Monday's pre-market trading, outpacing the broader rally in U.S. airline stocks. The surge comes amid growing optimism about a potential end to the federal government shutdown, which has been a source of concern for the aviation industry.

The positive sentiment wasn't limited to Frontier Group, as other major U.S. airlines also experienced significant gains. Alaska Air Group led the pack with a 2.5% increase, followed by American Airlines at 2.7%, while JetBlue Airways and Frontier Group were initially reported to be up 1% and 0.7% respectively. However, Frontier's exceptional 5.22% jump suggests that other factors specific to the company may have contributed to its outperformance.

Investors appear to be betting on improved prospects for the airline industry as a whole, with the potential resolution of the government shutdown likely to ease regulatory and operational challenges faced by carriers. For Frontier Group, known for its ultra-low-cost model, this could translate into smoother operations and potentially increased demand for budget travel as consumer confidence rises.