Cheapest Gas in Billings, MT
Updated April 5, 2026 — Prices updated regularly from EIA data
$3.05
Lowest price at Costco in Billings
Finding Cheap Gas in Billings
Gas prices in Billings, Montana vary significantly by brand and location. This guide identifies today's most affordable options — potentially saving the average driver $$12.00 or more annually.
Maximum Savings in Billings
Choose Costco over Chevron
$0.25 per gallon
$3.75 per 15-gallon fill • $12.00 per year (est.)
Cheapest Brands in Billings
| Rank | Brand | Est. Price | Savings vs. Most Expensive |
|---|---|---|---|
| #1 | Costco | $3.05 | $0.25 |
| #2 | Speedway | $3.17 | $0.13 |
| #3 | Circle K | $3.18 | $0.12 |
| #4 | Sunoco | $3.21 | $0.09 |
| #5 | Marathon | $3.22 | $0.08 |
| #6 | BP | $3.24 | $0.06 |
| #7 | Mobil | $3.25 | $0.05 |
| #8 | Exxon | $3.26 | $0.04 |
| #9 | Shell | $3.28 | $0.02 |
| #10 | Chevron | $3.30 | $0.00 |
Gas Saving Tips for Billings Drivers
- Avoid filling up at highway exits, airports, and tourist areas where convenience premiums routinely add 15-25 cents per gallon.
- Keep your tires properly inflated to the manufacturer's recommended PSI — under-inflated tires reduce fuel economy by up to 3%, costing you money every mile.
- Accelerate and brake gradually. Aggressive driving can reduce fuel economy by 15-40%, directly increasing how often you fill up.
- Track weekly price cycles in your city — most markets follow predictable weekly patterns. Identifying yours and filling on low-price days saves 5-15 cents per gallon consistently.
- Fill up before holiday weekends. Memorial Day, Fourth of July, and Labor Day consistently see 10-25 cent price spikes as demand surges. Topping off Thursday before a holiday weekend beats the rush.
Nearby Cities with Cheaper Gas
Save on Gas, Invest in American Legacy
While you track every penny at the pump, own a piece of American history. Limited edition collectibles from our trusted partners.
Claim Yours Now →