The Frontier Airlines MKE Terminal offers a convenient and reasonably priced travel experience, operating out of Concourse D at Milwaukee Mitchell International Airport . In addition to luggage services and self-service check-in kiosks, the terminal has a number of eating options, including Dunkin' Donuts and Starbucks. Although Frontier's minimalist strategy results in few in-flight conveniences, travelers may still benefit from services like free Wi-Fi and charging stations located within the airport. In order to allow for security inspections and possible luggage checks, travelers are urged to arrive at least 90 minutes before to departure. In general, MKE's Concourse D serves budget-conscious tourists looking for prompt service.