Ultra-low-cost carriers once thrived from offering dirt cheap fares and bare bones service. But Frontier Airlines is showing real pricing power, and higher airfares have meant a surge in revenue. The carrier reported record revenue of $1.3 billion, up 38% from a year earlier. Frontier chief commercial officer Bobby Schroeter said the airline was benefitting from the pricing environment during a call with analysts on Wednesday. “The demand environment is strong.