what terminal is frontier at logan airport as an ultra-low-cost carrier, Frontier offers budget-friendly flights to various domestic destinations, making it a popular choice for cost-conscious travelers. Terminal E features modern amenities, including self-service kiosks for quick check-in and spacious seating areas for passenger comfort. Travelers can enjoy a selection of dining options, from quick bites to sit-down meals, as well as retail shops for travel essentials and souvenirs. With its focus on affordability and efficient service, Frontier Airlines provides a practical option for those flying to and from Boston.