Costco Ontario, CA
See the normal opening and closing ⏰ hours and ☎️ phone number for ✳️ Costco Ontario, CA.
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Costco
Hours
| Monday: | 7:00 AM – 6:00 PM |
| Tuesday: | 7:00 AM – 6:00 PM |
| Wednesday: | 7:00 AM – 6:00 PM |
| Thursday: | 7:00 AM – 6:00 PM |
| Friday: | 7:00 AM – 6:00 PM |
| Saturday: | 7:00 AM – 4:00 PM |
| Sunday: | Closed |
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