USA › Road trip gas calculator › Salt Lake City to Las Vegas
Salt Lake City to Las Vegas: gas cost
About 420 miles one way. Fuel cost at this week’s average regular price in Rocky Mountain (PADD 4): $4.213 per gallon (EIA, week of Nov 2, 2026).
Fuel cost by vehicle
| Vehicle | MPG | Gallons | One way | Round trip |
|---|---|---|---|---|
| Compact car | 35 | 12.0 | $50.56 | $101.11 |
| Midsize sedan | 30 | 14.0 | $58.98 | $117.96 |
| SUV / crossover | 24 | 17.5 | $73.73 | $147.46 |
| Pickup truck | 18 | 23.3 | $98.30 | $196.61 |
💡 Rocky Mountain prices swing more than most regions; check before you leave.
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FAQ
How much does it cost to drive from Salt Lake City to Las Vegas?
At about 420 miles and this week’s average of $4.213 per gallon (Rocky Mountain (PADD 4)), a car averaging 30 MPG uses about 14.0 gallons – roughly $58.98 one way or $117.96 round trip.
How many gallons of gas from Salt Lake City to Las Vegas?
About 12.0 gallons for a 35 MPG car, 17.5 for a 24 MPG SUV and 23.3 for an 18 MPG pickup.
Gas prices by state this week → · Gas price history → · More calculators →
Distances are approximate driving distances. Gas prices: U.S. Energy Information Administration weekly averages for regular gasoline; actual prices along the route vary.