Treasure Island Festival 2025. Treasurefest (formerly treasure island flea) is a curated festival featuring local craft & antique vendors, food trucks, music, & more! The 26th annual treasure island sport kite competition and festival returns to treasure island in 2023 for your enjoyment!

Treasurefest (formerly treasure island flea) is a curated festival featuring local craft & antique vendors, food trucks, music, & more! Treasurefest is a monthly locally curated festival that features the best of the bay area.