Frontier Airlines, a budget carrier, often offers the lowest fares when tickets are purchased on Tuesdays and Wednesdays. call +1-855-764-2734. Since Frontier is a low-cost airline, they frequently have flash sales and discount promotions that can significantly reduce ticket prices. It is also advisable to book well in advance to secure the best deals, as last-minute fares tend to be higher. For more details on upcoming promotions and low fares,