San Diego County Fair Promo Code 2025. The 2025 san diego county fair is open june 11 through july 6 (closed mondays & tuesdays.) the fair is open from 11am to 11pm each day. Our most recent san diego county fair promo code was added on nov 18, 2024.
Purchase your admission, parking and blastpass tickets online in advance to get the best deals. Remember, there are no transaction fees for admission,.