Bellingham, WA Lowest Regular Gas Prices Summary. There are 39 Regular gas price reports in the past 5 days in Bellingham, WA. The average Regular gas price in Bellingham, WA is $2.56, which is $0.5 higher than U.S. national average Regular gas price $2.06. The lowest Regular gas price is $2.1 of Supergas located at 108 S Samish Way, Bellingham, WA 98225.