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Events and Things to do in Ontario, CA this weekend

Looking for things to do in Ontario this weekend? Explore our real-time listings for the best concerts, nightlife, and food and drink experiences. From seasonal festivals and comedy shows to free activities, find your next plan with our constantly updated feed of Ontario's most popular events.

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Things to do around Ontario

Trends in Ontario

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Frequently asked questions about Ontario

What are the best events to attend this weekend in Ontario?

The best events to attend this weekend in Ontario include concerts, nightlife experiences, seasonal events, food and drink tastings, and live entertainment happening across the city. According to Eventbrite, some of the best events this weekend include:
  • SNL X CHRIS HALLOWEEN PARTY FINALE 18+
  • TWERK SATURDAYS HALLOWEEN NITE 18+
  • Riverside Halloween Bar Crawl 2026
  • FLYWAY NIGHTCLUB: TRAVIESA SPECIAL EVENT HALLOWEEN NIGHT PARTY

    • Which events are currently trending in Ontario?

    Trending weekend events in Ontario often reflect seasonal moments, nightlife demand, and popular neighbourhoods, including concerts, parties, and special themed events. The trending searches this month in Ontario are:
  • halloween events
  • trunk or treat
  • trick or trunk
  • inland empire

    • Which events are coming up in Ontario this weekend?

    In addition to what's happening right now, there are many upcoming weekend events in Ontario, including live shows, parties, food experiences, and limited-time events. Discover upcoming weekend events you won't want to miss:
  • The Haunted Car Wash in Montclair
  • The Cathedral Presents: Jimmy Rock
  • Crawl-O-Ween: A Downtown Pomona Bar Crawl
  • 5th Annual Masquerade Ball

    • Are there free things to do in Ontario this weekend?

    Yes — there are often free things to do in Ontario this weekend, including live music, cultural events, seasonal activities, and community gatherings. Many events on Eventbrite are free or offer free entry options. These are some free events happening in Ontario this weekend:
  • Free Events this weekend