Costco Gas Prices in Spokane, WA

Spokane, Washington has 2 Costco fuel centers serving members in the area. Across Spokane, regular gas averages $4.934, premium runs about $0.490 higher at $5.424, and diesel sits at $6.369. That's about $0.041 above the Washington statewide average of $4.893. Within Spokane, Costco N Spokane posts the lowest regular at $4.869 and Spokane the highest at $4.999 — a $0.130 spread worth checking before you fuel up. Across Spokane, regular pump prices have climbed about $0.350 over the past month, from $4.584 a month ago. Premium has climbed about $0.305 and diesel has climbed about $0.710 over the same period. Diesel is available at 1 of the 2 Spokane stations.