SeaPort Airlines (2008) (Portland International) will set-up a new base at San Diego International and offer up to five daily round-trips from there to Imperial/El Centro Country from March 1. The regional carrier has won the essential air service contract for El Centro and will replace SkyWest Airlines (OO, St. George Municipal) which currently offers two daily E120 services to Los Angeles International as United Express using United Airlines (UA, Chicago O'Hare) flight numbers.