Los Angeles (LAX) to San Francisco (SFO): 338 miles (543 km) great-circle, about 1h 10m nonstop by our estimate. Cheapest fare observed: $126 round-trip on Frontier, nonstop, departing April 28, 2026.
$126 round-trip, Frontier F92857, departing 2026-04-28 at 20:01, returning 2026-05-05. The recorded itinerary left on a Tuesday, returning on a Tuesday 7 nights later; the fare was observed 3 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $126, it ranked 4th of the 30 round-trip fares we recorded from LAX (median $302). That is 37.3 cents per great-circle mile (round-trip price over one-way distance), above the LAX median of 15.3 cents across 30 round-trip routes.
Routes from LAX of similar length: Las Vegas (236 mi) at $75 and Denver (861 mi) at $121.
Frontier had the cheapest fare on 11 of 30 LAX routes. It is the 29th longest of the 30 routes we track from LAX.
Of 19 departure airports with a fare to San Francisco, Los Angeles (LAX) ranked 1st at $126. Lowest: $126 from Los Angeles (LAX); highest: $483 from New York (JFK); 6 nonstop. Cheapest-fare airlines (routes): Frontier (13), Southwest (3), American Airlines (1), United Airlines (1) and WestJet (1).
The reverse, San Francisco (SFO) to Los Angeles (LAX), was $116 round-trip on Frontier, nonstop, departing June 9, 2026. San Francisco to Los Angeles flights.
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.