Ontario Gas Prices - Find the Lowest Gas Prices in Ontario, WI

Search for the lowest gasoline prices in Ontario, WI. Find local Ontario gas prices and Ontario gas stations with the best prices to fill up at the pump today

National and Wisconsin Gas Price Averages

National Avg.	WI Reg. Avg.	WI Plus Avg.	WI Prem. Avg.	WI Diesel Avg.
$3.121 03/21/2025	$3.057 03/21/2025	$3.493 03/21/2025	$4.062 03/21/2025	$3.330 03/21/2025

Today's lowest gas prices in Wisconsin and around Ontario

Station	Regular	Plus	Premium	Diesel
Costco W162N9235 Pershing Ave, Menomonee Falls, WI	$2.57 03/21/2025	03/21/2025	$3.35 03/21/2025	$3.05 03/21/2025
Costco 443 Pewaukee Rd, Pewaukee, WI	$2.57 03/21/2025	03/21/2025	$3.35 03/21/2025	03/21/2025