I recently drove 15 hours versus taking a flight so I would give Delta one less passenger.
I was making 20 round trips per year between San Diego and Pocatello. 925 miles one way. 15 hours with moderate traffic. 13 hours 50 mins was my best. 22 hours worst with end of weekend traffic and snow blocking Cajon pass.
Delta has service from Pocatello to San Diego via Salt Lake City. I only fly if my company is picking up the tab for the travel/lodging/food for a business trip. The last time that occurred was September 2017.