![Cheapest Gas in Montana: Glendive, Great Falls, Sidney, Missoula (April 2022)](http://townsquare.media/site/341/files/2020/04/75.jpg?w=980&q=75)
Cheapest Gas in Montana: Glendive, Great Falls, Sidney, Missoula (April 2022)
Many cities in Montana have gas prices far below $4 a gallon, and you don't even need to fill up at a Costco or Sam's Club to find it. Regular gas stations (as of April 13th) are showing prices as low as $3.67 a gallon.