What describes Frontier Airlines' payment options for ticket purchases?

Frontier Airlines offers various convenient payment options for ticket purchases, which include major credit cards, PayPal, and travel vouchers. This range allows customers to choose how they want to complete their transactions based on their preferences and available payment methods. The inclusion of PayPal adds an extra layer of flexibility and security for online transactions, making it easier for travelers to secure their bookings.

While other methods listed in the options may provide payment alternatives in different contexts, they are not typically accepted by Frontier Airlines for purchasing tickets. For instance, cash transactions are generally not feasible in online or many airport scenarios, personal checks and money orders are less common in ticketing systems, and bank transfers are not a standard method offered by civilian commercial air travel for immediate purchases. Thus, the answer encompassing major credit cards, PayPal, and travel vouchers accurately reflects the airline's approach to customer convenience and modern transaction solutions.