Spirit Airlines DXB Terminal at Dubai International Airport (DXB). Being a low-cost airline primarily serving domestic routes in the United States, it usually links with other airlines for international travel. DXB passengers can take advantage of a number of facilities, such as free Wi-Fi, retail, and food options. Since other airlines will handle your international leg, it's crucial to verify your schedule for transfer details and allow enough time for connections if you're connecting through DXB to a Spirit flight.