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Indoor Playgrounds in Ontario, CA

Ontario has 7 indoor playgrounds — including 1 trampoline park, 4 toddler-friendly spots, and 5 that host birthday parties. Listings are ranked by what parents say (rating weighted by review count) and show live open-now hours, so you can pick a spot and go.

Kids Empire Ontario

4.7 ★★★★★ 1,150 reviews

130 W G St, Ontario, CA

Hosts birthday parties spotless & cleangreat for toddlersfriendly staff

Family-friendly indoor play park with slides, climbing zones and arcade games.

LOL KIDS CLUB - ONTARIO, CA

4.2 ★★★★☆ 1,688 reviews

735 N Milliken Ave # A, Ontario, CA

Ages 0–12

Hosts birthday parties Toddler-friendly ~$29 admission spotless & cleangreat for toddlersbirthday party favorite

Family-friendly indoor play center featuring slides, ball pits and obstacle courses.

iFLY Indoor Skydiving - Ontario

4.7 ★★★★★ 586 reviews

4510 Ontario Mills Pkwy, Ontario, CA

Ages 4–14

Hosts birthday parties spotless & cleanfriendly staff

Kid-friendly center offering indoor skydiving in wind tunnels for all ages, along with video recordings of the experience.

Slick City Action Park

4.4 ★★★★☆ 251 reviews

4655 Mills Cir, Ontario, CA

Ages 6–11

Hosts birthday parties Toddler-friendly Sensory-friendly ~$40 admission spotless & cleangreat for toddlersfriendly staff

Play Street Museum - Ontario

5 ★★★★★ 38 reviews

910 N Haven Ave #150, Ontario, CA

Ages 1–8

Hosts birthday parties Toddler-friendly ~$23 admission spotless & cleangreat for toddlersfriendly staff

FUNBOX INLAND EMPIRE - ONTARIO

4.1 ★★★★☆ 74 reviews

1 Mills Cir, Ontario, CA

Ages 3–9

Toddler-friendly Sensory-friendly spotless & cleangreat for toddlerscafé for parents

Kids-focused inflatable-maze playground featuring dodgeball, basketball hoops and slides.

Playleap Kids Adventure Park

1640 E 4th St Ste b, Ontario, CA

Good to know in Ontario

Admission mentions around Ontario range about $23–$40 per child. All 5 venues with posted hours are open on Sundays. 4 venues have a dedicated toddler area or toddler times. Play Street Museum - Ontario is the newest addition in town.

For sensory-friendly sessions, look at Slick City Action Park and FUNBOX INLAND EMPIRE - ONTARIO.

Best for toddlers in Ontario

These spots have a dedicated toddler zone or toddler times — proven from the venue's own site or parent reviews — so little ones aren't dodging big kids.

Toddler-friendly playgrounds in Ontario →

For a birthday party in Ontario

These venues host birthday parties — where the venue publishes a booking page, its listing links straight to it.

Birthday party venues in Ontario →

Indoor playgrounds near Ontario