Comic Con International, more famously known as the San Diego Comic Con, mostly spotlights comic books and movies; but there are a few comic strip cartoonists spread among the attendees.
The National Cartoonists Society has a booth with cartoonists showing up throughout the weekend. Also there are some panels featuring comic strips and NCS people.
Thursday July 18, 2019 (yeah, you’ve already missed these)
Friday June 19, 2019
I probably missed a bunch. Here’s the full SDCC schedule.
King Features has some events other than the Popeye listed above.
Former NCS President, current MAD artist, and caricaturist extraordinaire Tom Richmond will be there.