Low-cost carrier Frontier Airlines will suspend its service between Denver and Billings, Montana with effect from 23 January 2013.
"We constantly review our markets based on performance and made the decision that Billings no longer fit within our current business plan," says a Frontier spokeswoman.
Frontier's Denver-Billings flights are operated by Republic Airlines using Embraer 190s, schedules in Innovata show. Both Frontier and Republic are subsidiaries of Republic Airways Holdings.
Frontier is gradually drawing down its branded E-190 flying operated by Republic, with Republic Airways Holdings selling five E-190s to US Airways and a recent E-190 charter agreement it recently announced that will involve the transfer of another five E-190s.
Republic's executives said on a 1 November earnings call that Republic will operate four E-190s for Frontier by the end of January 2013, down from 17 as of the end of the third quarter.
Besides Frontier, United Airlines also operates non-stop between Denver and Billings.