San Diego is roughly 330 miles (about 530 km) from Las Vegas by road, which usually means a 5 to 6 hour drive depending on traffic and route.

Quick Scoop

  • Typical driving distance: about 330–340 miles.
  • Usual driving time: around 5–6 hours in normal conditions, longer on busy weekends and holidays.
  • Straight-line (air) distance: about 260–265 miles (around 416 km).

Driving vs flying

  • By car, most routes fall in the low-300-mile range, with common estimates between 318 and 328 miles depending on exact start and end points.
  • By air, the distance between San Diego International (SAN) and Las Vegas Harry Reid International (LAS) is about 258–265 miles (around 416 km), with flight distance figures converging around that number.

If you’re planning a trip

  • Expect closer to 6 hours if you include gas, restroom, and snack stops, or if you’re traveling at peak times like Friday evenings or holiday weekends.
  • Many guides describe this as a classic Southwest road trip, with desert scenery and optional stops if you want to turn it into a full-day adventure.

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Wondering how far San Diego is from Las Vegas? Learn the driving and flight distance, typical travel time, and key trip details for this popular Southwest route.