Costco Gas Prices in Seattle, Washington
Seattle · Warehouse #1
4401 4TH AVE S, Seattle, Washington 98134-2311
Prices updated: August 14, 2026 at 1:00 AM
Regular
$4.999
PRICE PER GALLON
Press
Premium
$5.649
PRICE PER GALLON
Press
Current gas prices at Costco #1
This Costco gas station is located at 4401 4TH AVE S in Seattle, Washington. The latest reported fuel prices are regular at $4.999/gal, premium at $5.649/gal. Prices were last updated on August 14, 2026 at 1:00 AM.
Get directions to this Costco gas station30-Day Price History
30-day change
Regular
$4.999+0.100 (2.0%)
Premium
$5.649+0.250 (4.6%)
DateRegPrem
Aug 14, 1:00 AM$4.999$5.649
Aug 13, 7:00 PM$4.999$5.599
Aug 12, 3:00 PM$4.999$5.649
Aug 9, 6:00 PM$4.979$5.699
Aug 8, 6:00 PM$4.999$5.699
Aug 4, 9:00 PM$5.099$5.799
Aug 3, 8:00 PM$5.099$5.779
Aug 3, 4:00 PM$4.999$5.699
Aug 2, 5:00 PM$5.099$5.799
Jul 28, 5:00 PM$5.099$5.739
Jul 24, 10:00 PM$5.099$5.699
Jul 23, 9:00 PM$5.049$5.699
Jul 23, 4:00 PM$4.999$5.599
Jul 22, 4:00 PM$4.999$5.559
Jul 20, 5:00 PM$4.999$5.499
Jul 19, 4:00 PM$4.999$5.479
Jul 17, 10:00 PM$4.999$5.399
Jul 17, 4:00 PM$4.899$5.399