The chief executive of Spirit Airlines has spoken publicly for the first time since the carrier collapse, stating that the company exhausted its financial runway. The ultra-low-cost carrier ultimately failed to survive its financial crisis.

The CEO said the company struggled amid fierce market competition and rising operational costs, eventually becoming unable to sustain operations. Spirit Airlines had repeatedly attempted to avoid bankruptcy through mergers and financing, but all efforts failed.

The collapse of Spirit Airlines marks a severe challenge for the low-cost airline model in the United States. In recent years, budget carriers have faced mounting pressure from traditional airline competition and cost inflation.

Consumers and industry analysts are watching the implications for market competition. Spirit Airlines was among the cheapest carriers in the US, and its exit could lead to fare increases on certain routes.