On December 19, 2012, it was announced that ExpressJet, operating as United Express on behalf of United Airlines, would initiate twice daily regional jet service to Denver International Airport (DEN) beginning May 1, 2013. These flights were operated with 50-seat Embraer ERJ-145 regional jet aircraft and comprise the first ever nonstop jet service between Santa Fe and Denver. This service was replaced by Trans States Airlines as United Express in summer, 2015 which also operates Embraer ERJ-145 regional jets. Service had increased to as many as five daily flights to Denver in October of 2019. For the summer of 2020, four daily flights were planned and all flights were to operate by SkyWest Airlines with the larger CRJ-700 aircraft. Instead, due to the COVID-19 virus outbreak, service was cut back to only one daily flight to Denver using the smaller 50-seat CRJ-200. Service is still planned to resume with four daily nonstops to Denver later in 2021.