Fly from Los Angeles to Kansas City for $178 round-trip, including all taxes, on United. This fare is valid for travel 7-days a week (when available) for travel through February 9. Tickets require a 7-day advance purchase. No miniumum stay required.
Seats are scarce and not available for peak holiday travel. Booking info and other details here.
Similar fare available for Los Angeles to/from Omaha.