Costco Gas Prices in Tukwila, Washington
Tukwila · Warehouse #6
400 COSTCO DR STE 150, Tukwila, Washington 98188-4808
Prices updated: July 22, 2026 at 6:00 PM
Regular
$4.999
PRICE PER GALLON
Press
Premium
$5.599
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 $4.999/gal, premium at $5.599/gal, diesel at $5.999/gal. Prices were last updated on July 22, 2026 at 6:00 PM.
Get directions to this Costco gas station30-Day Price History
30-day change
Regular
$4.999−0.200 (3.8%)
Premium
$5.599−0.100 (1.8%)
Diesel
$5.999no change
DateRegPremDiesel
Jul 22, 6:00 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
Jul 17, 4:00 PM$4.959$5.479$5.729
Jul 16, 5:00 PM$4.899$5.399$5.699
Jul 13, 11:00 PM$4.899$5.399$5.599
Jul 13, 6:00 PM$4.949$5.399$5.599
Jul 12, 4:00 PM$4.969$5.399$5.599
Jul 11, 3:00 PM$4.969$5.379$5.559
Jul 10, 5:00 PM$4.969$5.379$5.469
Jul 9, 10:00 PM$4.899$5.379$5.469
Jul 7, 4:00 PM$4.899$5.379$5.499
Jul 6, 10:00 PM$4.999$5.379$5.499
Jul 5, 6:00 PM$4.999$5.599$5.459
Jul 4, 8:00 PM$4.899$5.499$5.459
Jun 30, 5:00 PM$4.999$5.599$5.469
Jun 28, 4:00 PM$4.999$5.599$5.599
Jun 27, 3:00 PM$4.999$5.649$5.599
Jun 26, 3:00 PM$5.099$5.699$5.599
Jun 25, 3:00 PM$5.099$5.699$5.699
Jun 24, 9:00 PM$5.099$5.699$5.799
Jun 24, 3:00 PM$5.099$5.699$5.899
Jun 23, 9:00 PM$5.099$5.699$5.999
Jun 23, 3:00 PM$5.199$5.699$5.999