Plains Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Month Ago Avg. | $4.17 | $4.41 | $4.69 | $4.71 | - |
Highest Recorded Average Gas Price In Plains Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $4.71 | 08/04/26 |
| Regular | $4.17 | 10/06/26 |
Top 10 Gas Stations & Cheap Fuel Prices in Plains
Conoco in Plains (325 E Railroad St)
Railroad Ave, Plains, Montana,
$4.49
Oct 23, 2026
0¢ Cashback
Conoco in Plains (325 E Railroad St)
Railroad AvePlainsMontana59859USA
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.