Weekends and holidays have higher ticket prices. Be flexible with your flight dates to ensure that you receive a great discount on Frontier Airlines reservations. You may save money by using OneTravel to plan visits to your preferred locations. With ultra low-cost carriers like Frontier, finding cheap flight bargains has never been simpler. Over 80 destinations are served by Frontier Airlines Milwaukee  including those in the United States, Jamaica, Costa Rica, and the Dominican Republic. Frontier Airlines provides a relaxing flight with luxurious seating, top-notch cuisine, and world’s best entertainment.