Gas Prices in Sammamish, WA (Near Seattle)

The current average regular gas price near Sammamish is approximately $5.029 per gallon, based on the Washington statewide average. Individual stations within Sammamish vary based on brand, location, and local competition. Use our station list to find the best price in your area.

The cheapest gas in Sammamish is typically found at warehouse club stations (Costco, Sam's Club, BJ's) and grocery store fuel centers. These membership-based stations often price 5–15 cents below branded stations like Shell, Chevron, and BP. Stations along major commuter corridors tend to compete aggressively on price.

In Sammamish, Monday and Tuesday mornings are historically the cheapest times to fill up, before stations adjust prices heading into the weekend. Prices typically peak on Thursday through Saturday when weekend demand rises. Avoiding the Friday afternoon rush can save you 3–8 cents per gallon.

Gas prices in Sammamish tend to track closely with the Washington statewide average, though urban stations with higher real estate costs may price slightly higher than suburban or rural stations. Larger metros with many competing stations often see sharper price cuts when crude prices fall.

Prices in Sammamish and Seattle are typically within a few cents of each other, as both draw from the same regional supply chain. However, Sammamish suburbs sometimes offer lower prices due to lower overhead costs and strong station competition. Our price tracker updates regularly — check current prices above.

Fuel requirements in Sammamish depend on EPA clean air designations for Washington. Metro areas with air quality concerns may require reformulated gasoline (RFG), which burns cleaner but costs slightly more. Check the EPA's RFG areas page for Sammamish's current status.