The dates when San Diego hotels fill up and prices jump: Comic-Con in July above all, summer weekends, the Holiday Bowl at the end of December, big Petco Park concerts and large conventions. Check here before you pick your travel dates.
Comic-Con week in July (downtown hotels sell out a year ahead), summer weekends, the Holiday Bowl and New Year. January to early March and late fall are the cheapest weeks.
Avoid the dates on this page, and prefer Sunday to Thursday nights; weekends cost more almost every week of the year.
Dates come from the organizers; we check them regularly.