San Diego (SAN) to Las Vegas (LAS): 259 miles (417 km) great-circle, about 1h 00m nonstop by our estimate. Cheapest fare observed: $52 round-trip on Frontier, nonstop, departing May 11, 2026.
$52 round-trip, Frontier F91326, departing 2026-05-11 at 21:59, returning 2026-05-12. The recorded itinerary left on a Monday, returning on a Tuesday 1 night later; the fare was observed 16 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $52, it was the cheapest of the 30 round-trip fares we recorded from SAN (median $279). That is 20.1 cents per great-circle mile (round-trip price over one-way distance), above the SAN median of 15.0 cents across 30 round-trip routes.
Routes from SAN of similar length: Los Angeles (109 mi) at $277 and San Francisco (447 mi) at $185.
Frontier had the cheapest fare on 16 of 30 SAN routes. It is the 29th longest of the 30 routes we track from SAN.
Of 32 departure airports with a fare to Las Vegas, San Diego (SAN) ranked 2nd at $52. Lowest: $51 from San Francisco (SFO); highest: $465 from Los Cabos (SJD); 16 nonstop. Cheapest-fare airlines (routes): Frontier (24), Alaska Airlines (2), Air Canada (1), American Airlines (1), JetBlue (1) and Southwest (1), plus 2 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Los_Angeles, America/Los_Angeles; flight time is our estimate.