It’s only been two years since Republic Airways Holdings bested Southwest in the Frontier Airlines sweepstakes — but the Republic-Frontier pairing is already headed for Splitsville. This week, Republic CEO Bryan Bedford said the firm is looking at selling Frontier, prompting speculation that Southwest or JetBlue may become bidders. But airline consultant Michael Boyd says don’t bet on it.Another industry expert, Jay Sorensen, calls JetBlue a long-shot suitor, while Small Cap Network notes that Southwest could pick up Frontier for less than it offered back in 2009. But neither argument holds water for Boyd, whose Boyd Group International is based in Evergreen.michael boyd.jpgMichael Boyd.Regarding Southwest, Boyd says, “Not a chance. You don’t buy what you already have, and Southwest has already taken what it wants in Denver.