[The Magical Mischief Tour]

How many planes do you think there would be out over the ocean, coming in from the direction of Hawaii, at an altitude consistent with overflying the coast?

According to public and private/subscription based tracking software I've looked at there were around 60 jet aircraft airborne, at altitude during a 30 minute window (+/-15 mins) to the reported time of the sighting. Approximately half of those were either inbound or outbound of the US or flying parallel to the coastline north/south.

[Wissa]

Approximately half of those were either inbound or outbound of the US or flying parallel to the coastline north/south.

In a flight plan for landing at or taking off from coastal CA cities, they may be below the altitude where contrails would form on that day.

Planes flying parallel to the coast may be east of where the appropriate conditions existed.

I don't know in this case. I'm just throwing out possible explanations for the absence of visible contrails in the images.

[Finny]

At the same altitude as a plane flying from Hawaii to Phoenix? How high is that, anyway?