Electras and Viscounts could have continued to fly out of Midway, but O'Hare's new terminal opened in 1962, allowing airlines to consolidate their flights. From July 1962 until United returned in July 1964, Midway's only scheduled airline was Chicago Helicopter. In August 1966 a total of four fixed-wing arrivals were scheduled, all United 727s (United was alone at Midway until early 1968).