Feel free to mock me (silently, please) for posting a naive question. Is there such a thing as "First" on a CRJ? I'm flying SLC-TUS on a CRJ, which I presume is a Skywest flight, and a few clues on the Delta website lead me to believe that my fare may be upgradeable. I don't see how this is possible, but I haven't flown Skywest in years, so any info would be appreciated.