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Birthday Party Places in Ontario, CA
Throw the ultimate birthday party at Kids Empire Ontario!
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Discover our Birthday Packages
Your kids deserve to Play Big! Throw them the best birthday party ever, thanks to our hassle-free packages:
All party packages include
Dedicated party host to entertain your party
2 1/2 hours dedicated seating
Dance party with our friendly dragon, Huggy
Drinks & Goodies
Create Your Own Adventure
PLAY YOUR WAY with our selection of available add-ons
starting at
$29.90 / kid
PLAY BIG with our hassle-free pre-made package
$51.90 / kid
$150 deposit required at booking
Welcome to Kids Empire Ontario! Families from Montclair, Chino, Rancho Cucamonga, and across the Inland Empire know that when it’s time to celebrate, the kids play big and we handle the rest. For ages 1–12, our indoor playground near West G Street makes birthdays unforgettable—without the planning stress.
How Does It Work?
Pick a Date and Time:
Check availability online for Kids Empire Ontario and grab your ideal slot early—popular dates book fast;
Build Your Package:
Choose Play Your Way to customize with add-ons, or pick Play Big for a ready-to-party, all-inclusive experience;
Send Your Invitations:
Share the party details plus a socks reminder so guests arrive ready to jump in;
Sign Waivers in Advance:
Have families complete waivers online to speed up check-in and get straight to play!
All-Day Indoor Fun at Our Ontario Playground
Kids Empire Ontario is designed for big birthday energy. Guests race through a multi-level maze of padded play structures, zoom down winding slides, dive into the ball pit, and show off moves on the dance floor. Little ones get their own dedicated toddler zone, so every age has space to explore safely.
One of the best perks among indoor party venues in the Inland Empire: your table is reserved for 2.5 hours, but every guest gets all-day park access. Friends can arrive early, take breaks, and keep playing until closing—making this one of the most fun kids birthday activities near Ontario, CA.
FAQs: Planning Your Birthday Party at Kids Empire Ontario
I'm bringing my child for their birthday but don't want to book a package. Can I still bring a cake?
No—outside food or drinks (including cake) aren’t allowed with general admission. Birthday cakes or cupcakes are welcomed only with a booked birthday package, so if you want to celebrate with sweets, a party package is the way to do it.
I'm invited to a birthday party. Is there anything I should do before arriving?
Yes—complete the waiver online before you arrive. Waivers are required for every person, and no child can enter without one signed by a parent or guardian. Bring socks for everyone too, and you’re set for a smooth, fast check-in.
Where is Kids Empire Ontario located, and is there parking available?
Kids Empire Ontario is near West G Street and Euclid Ave, about 0.2 mile (around 2 minutes) from downtown Ontario. It’s easy to reach from Fwy 10, Fwy 15, or Fwy 60 via the G Street exit, and convenient for guests from Chino, Upland, Claremont, Jurupa Valley, and Rancho Cucamonga. Free parking is available in the plaza, and public transit access is nearby via the Ontario–East Metrolink Station.
I need to step out for a moment. Can I leave my child alone briefly?
No—children can’t be left unattended at any time. An adult must supervise throughout the visit; otherwise, it’s considered child abandonment. The good news: your reserved tables near the play area make it easy to stay close while they play big.