Leduc sits on the QE2 just south of Edmonton International Airport, and its stations serve three very different crowds: locals, airport traffic (including rental returns hunting a cheap top-up), and the heavy-truck volume flowing through the Nisku industrial park next door. That mix keeps the corridor busy, and diesel especially competitive — Nisku's truck traffic supports some of the sharper diesel numbers in the region.
For gasoline, Leduc typically prices a touch above south Edmonton's Gateway/South Common cluster, so southbound commuters usually do best filling before they leave the city. The list below ranks every Leduc and Nisku station we track by current price, refreshed hourly; airport-bound drivers returning a rental will find it answers the "where do I fill before drop-off" question in one look.