Costco Gas Prices in Tukwila, Washington
Tukwila · Warehouse #6
400 COSTCO DR STE 150, Tukwila, Washington 98188-4808
Prices updated: August 16, 2026 at 7:00 PM
Regular
$5.299
PRICE PER GALLON
Press
Premium
$5.659
PRICE PER GALLON
Press
Diesel
$5.999
PRICE PER GALLON
Press
Current gas prices at Costco #6
This Costco gas station is located at 400 COSTCO DR STE 150 in Tukwila, Washington. The latest reported fuel prices are regular at $5.299/gal, premium at $5.659/gal, diesel at $5.999/gal. Prices were last updated on August 16, 2026 at 7:00 PM.
Get directions to this Costco gas station30-Day Price History
30-day change
Regular
$5.299+0.310 (6.2%)
Premium
$5.659+0.180 (3.3%)
Diesel
$5.999+0.270 (4.7%)
DateRegPremDiesel
Aug 16, 7:00 PM$5.299$5.659$5.999
Aug 16, 6:00 PM$5.199$5.659$5.899
Aug 14, 8:00 PM$5.099$5.599$5.999
Aug 14, 4:00 PM$4.999$5.499$5.999
Aug 11, 4:00 PM$5.099$5.599$5.999
Aug 10, 8:00 PM$5.099$5.599$6.059
Aug 9, 6:00 PM$5.099$5.599$5.999
Aug 8, 6:00 PM$5.099$5.699$5.999
Aug 7, 9:00 PM$5.169$5.699$5.999
Aug 6, 3:00 PM$5.099$5.699$6.099
Aug 4, 9:00 PM$5.099$5.699$6.159
Aug 3, 4:00 PM$4.989$5.699$6.069
Aug 2, 5:00 PM$5.099$5.799$6.099
Jul 29, 3:00 PM$5.099$5.699$5.999
Jul 25, 4:00 PM$5.069$5.699$5.999
Jul 24, 4:00 PM$4.999$5.699$5.999
Jul 23, 4:00 PM$4.999$5.649$5.999
Jul 22, 10:00 PM$4.999$5.599$5.999
Jul 22, 4:00 PM$4.999$5.499$5.999
Jul 20, 10:00 PM$4.989$5.499$5.859
Jul 20, 5:00 PM$4.969$5.499$5.729
Jul 19, 4:00 PM$4.989$5.499$5.729
Jul 17, 10:00 PM$4.989$5.479$5.729