I’ve been asked by my company to stay an extra day. So I changed my flight to tomorrow evening.

can I book a one way from this airport to my home for the following day or even later tomorrow night as a back up? I HAVE to be home Saturday and god forbid there is a cancelation for mechanical reasons or whatever and I had to fly standby.

so if I confirm a seat and then cancel when I get on my scheduled flight tomorrow, will that upset delta? Will it cause some automatic issue since they are so close? LAX - SFO

Thanks