Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Yuma to Los Angeles as you normally would.
It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, April can be a great choice for travel to Los Angeles. Flights to Los Angeles from Yuma in April are about $229 on average during April, but can be found for as low as $93.