Ontario Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $4.45 | $4.56 | $4.81 | $5.06 | $2.87 |
| Month Ago Avg. | $4.37 | $4.51 | $4.73 | $4.95 | $2.87 |
Highest Recorded Average Gas Price In Ontario Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $5.08 | 03/29/26 |
| Regular | $4.45 | 03/21/26 |
Top 10 Gas Stations & Cheap Fuel Prices in Ontario
US Fuels in Ontario (2155 S Euclid Ave)
2155 S Euclid Ave, Ontario, California,
$3.83
Mar 31, 2026
0¢ Cashback
Anthem Oil in Ontario (2963 S Archibald Ave)
2963 S Archibald Ave, Ontario, California,
$3.99
Mar 31, 2026
0¢ Cashback
Circle G in Ontario (1155 N Grove Ave)
1155 N Grove Ave, Ontario, California,
$4.09
Mar 31, 2026
0¢ Cashback
Chevron in Ontario (791 N Milliken Ave)
791 N Milliken Ave, Ontario, California,
$4.15
Mar 31, 2026
0¢ Cashback
Ontario Fuel in Ontario (1315 E 4th St)
1315 E 4th St, Ontario, California,
$4.27
Mar 31, 2026
0¢ Cashback
ARCO in Ontario (729 N Archibald Ave)
729 N Archibald Ave, Ontario, California,
$4.29
Mar 31, 2026
0¢ Cashback
Chevron in Ontario (1425 E 4th St)
1425 E 4th St, Ontario, California,
$4.29
Mar 31, 2026
0¢ Cashback
Shell in Ontario (1521 E 4th St)
1521 E 4th St, Ontario, California,
$4.39
Mar 31, 2026
3¢ Cashback
Exxon in Ontario (1195 E Walnut St)
1195 E Walnut St, Ontario, California,
$4.49
Mar 31, 2026
0¢ Cashback
Speedway Express in Ontario (808 N Mountain Ave)
808 N Mountain Ave, Ontario, California,
$4.49
Mar 31, 2026
0¢ Cashback
Find Cheap Gas Prices By State
Click on the state to view the State details
Gas Data Methodology
The fuel prices published in this guide are based on the results of research completed by Way.com’s data team. Using a mix of external and internal data, we analyzed millions of prices across U.S. ZIP codes and globally.