There is an official Columbo YouTube channel that is uploading full episodes. There's only 5 episodes on there at the moment and they aren't doing them in order, but it's an option. I wish NetFlix would get them back.
Also Saturday nights on Cozy TV---two episodes starting at 7:00 PM EDT.
Question to Aimee: What time zone are you in? If you're talking about Hallmark Movie Channel, which had been showing Columbo at 9:00 AM US eastern time, they are having a couple of weeks of "Christmas in July" programming.
Should return to regular programming in a couple of weeks.