Ontario Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $4.47 | $4.57 | $4.83 | $5.08 | $2.87 |
| Month Ago Avg. | $4.44 | $4.55 | $4.8 | $5.1 | $2.87 |
Highest Recorded Average Gas Price In Ontario Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $5.12 | 04/03/26 |
| Regular | $4.47 | 05/05/26 |
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
May 19, 2026
0¢ Cashback
Anthem Oil in Ontario (2963 S Archibald Ave)
2963 S Archibald Ave, Ontario, California,
$3.99
May 19, 2026
0¢ Cashback
Circle G in Ontario (1155 N Grove Ave)
1155 N Grove Ave, Ontario, California,
$4.09
May 19, 2026
0¢ Cashback
Chevron in Ontario (791 N Milliken Ave)
791 N Milliken Ave, Ontario, California,
$4.15
May 19, 2026
0¢ Cashback
Ontario Fuel in Ontario (1315 E 4th St)
1315 E 4th St, Ontario, California,
$4.27
May 19, 2026
0¢ Cashback
Chevron in Ontario (1425 E 4th St)
1425 E 4th St, Ontario, California,
$4.29
May 19, 2026
0¢ Cashback
ARCO in Ontario (729 N Archibald Ave)
729 N Archibald Ave, Ontario, California,
$4.29
May 19, 2026
0¢ Cashback
Shell in Ontario (1521 E 4th St)
1521 E 4th St, Ontario, California,
$4.39
May 19, 2026
3¢ Cashback
Exxon in Ontario (1195 E Walnut St)
1195 E Walnut St, Ontario, California,
$4.49
May 19, 2026
0¢ Cashback
Speedway Express in Ontario (808 N Mountain Ave)
808 N Mountain Ave, Ontario, California,
$4.49
May 19, 2026
0¢ Cashback
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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.