Costco Gas Prices in Ontario, CA
1 Costco fuel center in Ontario · 0 of 1 sell diesel
Ontario Avg Regular
$5.599
per gallon
Ontario Avg Premium
$5.959
per gallon
Ontario Avg Diesel
Not sold at any station in Ontario
Ontario regular is$0.104belowthe California average ($5.703)
vs U.S. average$1.173above($4.426)
Premium runs$0.360above regular on average
Ontario, California has 1 Costco fuel center serving members in the area. Across Ontario, regular gas averages $5.599 and premium runs about $0.360 higher at $5.959. That's about $0.104 below the California statewide average of $5.703. Across Ontario, regular pump prices have eased about $0.100 over the past month, from $5.699 a month ago. Premium has eased about $0.200 over the same period. None of the Ontario Costco fuel centers currently sell diesel.