Boeing 737-800 (N37274)

That appears to be Lookout Mountain, so that view shows that it is not coming, but is leaving Denver, westbound for Orange County John Wayne airport.

... or some other westerly destination.

Michael Wulfsohn commented ... "That appears to be Lookout Mountain, so that view shows that it is not coming, but is leaving Denver, westbound for Orange County John Wayne airport."

Michael is incorrect. I'm certain he is familiar with a mountain named Lookout in the Denver area but he is unfamiliar with Mt Rose and Slide Mountain in the Sierra Nevada near Reno. Perhaps Slide Mountain is quite similar in appearance to Lookout Mountain; I wouldn't know about that.
But what I do know is that Koson was well aware of where he was when he took this photo. He took this pic on 12 Jan 22 as N37274 was departing RNO's 16R enroute to KDEN. That is Slide Mountain in the background. Mt Rose is just out of view off the right edge of this shot.

Although similar to Lookout Mountain in Colorado, this is Slide Mountain located a few miles southwest of Reno-Tahoe International. The vertical lines of snow are the terrifying multi-black diamond ski runs known as the Chutes” at Mt.Rose-Ski Tahoe resort. Similar views of the same mountain peak can be seen in many of Gary Schenauer’s amazing images.

Thank you so much Gary! Also, Michael, this was taken in Reno but the view you're describing out of Denver definitely sounds like a place I might need to check out :)

Beautiful Photo Koson.

Well done having a beautiful mountain make the pic.

This is a fantastic photograph. Crisp blue aircraft, just enough detail on the mountain to see Zephyr Express and Upper Northwest Lifts :-)