Costco Gas Prices in Seattle, Washington
Seattle · Warehouse #1
4401 4TH AVE S, Seattle, Washington 98134-2311
Prices updated: September 4, 2026 at 8:00 PM
Regular
$5.199
PRICE PER GALLON
Press
Premium
$5.899
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 $5.199/gal, premium at $5.899/gal. Prices were last updated on September 4, 2026 at 8:00 PM.
Get directions to this Costco gas station30-Day Price History
30-day change
Regular
$5.199+0.200 (4.0%)
Premium
$5.899+0.200 (3.5%)
DateRegPrem
Sep 4, 8:00 PM$5.199$5.899
Sep 4, 6:00 PM$5.199$5.839
Sep 4, 3:00 PM$5.199$5.799
Sep 3, 7:00 PM$5.199$5.759
Sep 1, 3:00 PM$5.099$5.699
Aug 31, 2:00 PM$5.059$5.699
Aug 30, 4:00 PM$4.999$5.649
Aug 27, 9:00 PM$4.999$5.599
Aug 27, 5:00 PM$5.059$5.659
Aug 26, 4:00 PM$5.099$5.659
Aug 25, 3:00 PM$5.049$5.649
Aug 24, 3:00 PM$5.149$5.699
Aug 23, 5:00 PM$5.099$5.699
Aug 22, 4:00 PM$5.079$5.699
Aug 21, 5:00 PM$4.999$5.649
Aug 20, 5:00 PM$4.999$5.599
Aug 17, 7:00 PM$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