Cody, WY – Winter flights on United Express from Cody to Denver are officially set to return this year. Winter trips to Denver ended when Great Lakes Aviation pulled out of Cody a year ago. On Monday, United formally announced it will expand its summer service into a year-round operation. Spokeswoman Jenna Obluck says community support for the summer flights and the work of the Cody Yellowstone Air Service Organization were keys to their decision. Obluck says the airline isn't concerned that winter traffic won't be the same as summer passengers. She says United wouldn't have extended the service in Cody if it feared there weren't the passenger numbers. The service will be on 37-seat propeller planes. Flights will arrive in Cody around 8:30 in the evening and depart for Denver at 7:30 in the morning.