Costco Seattle Gas Prices
4401 4th Ave S, Seattle, WA 98134
Warehouse #1 · 26th cheapest of 33 in Washington
26th cheapest of 33 in Washington
Prices last refreshed — always verify at the pump.
30-day price trend
Located at 4401 4th Ave S in Seattle, Washington, this Costco gas station opened on September 15, 1983 and has been serving members for over 42 years. The pumps run 6AM – 10PM Monday through Friday, 6AM – 8:30PM on Saturday, and 6AM – 7:30PM on Sunday, while the warehouse itself opens 10AM – 8:30PM on weekdays. Members at this warehouse can also access a food court, a pharmacy, a tire center, an optical department, hearing aid services, and a car wash. Regular pump prices at this station have climbed about $0.10 over the past two weeks, from $5.399 two weeks ago. Premium has climbed about $0.10 over the same period.
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Frequently asked questions
What are the gas station hours at Costco Seattle?
The Costco Seattle gas station is open 6AM – 10PM Monday through Friday, 6AM – 8:30PM on Saturday, and 6AM – 7:30PM on Sunday. Hours can change on holidays — check the warehouse page on Costco.com before a long drive.
How much is gas at Costco Seattle right now?
Current pump prices at Costco Seattle are regular at $5.499 USD per gallon and premium at $6.099 USD per gallon. Prices are pulled from public sources and can change throughout the day — always verify at the pump before fueling.
Where is the Costco Seattle gas station located?
Costco Seattle is at 4401 4th Ave S, Seattle, WA 98134. The gas pumps are on the warehouse property — look for the Costco fuel canopy near the parking lot.
When did the Costco Seattle warehouse open?
The Costco Seattle warehouse in Seattle, Washington opened on September 15, 1983.
What other services does Costco Seattle offer besides gas?
Beyond the gas station, Costco Seattle also has a food court, a pharmacy, a tire center, an optical department, hearing aid services, and a car wash. Department hours can differ from the main warehouse — check signage on arrival.
Is Diesel available at Costco Seattle?
No — Diesel fuel is not sold at the Costco Seattle gas station. Only regular and premium unleaded gasoline are offered at this location. For the nearest Costco Diesel, check a larger warehouse or business center nearby.