Las Vegas to San Francisco

We flagged this Frontier nonstop a few days ago at $88 and it just dropped to $40, a 54% price cut and about 83% off the usual $237 fare on this route. It's the cheapest fare we've ever tracked between Las Vegas and San Francisco, with October dates showing on nonstop Frontier service. Whether it's a quick coastal getaway or a cheap connection point, this is worth locking in given how rarely we see it this low.