How turbulent is LAX-SFO typically?

One of the smoother short flights in the region, most of the movement happens near the ground.

What is the best altitude to avoid turbulence on LAX-SFO?

Cruise is short. Whatever level the crew picks, most of the flight is climb and descent.

When is the best time of year to fly LAX-SFO?

Any time of year. Morning departures avoid afternoon thermals near the ground.

What causes the turbulence on this route?

Mostly low-level thermals and local wind near the two airports rather than anything at cruise altitude.

Turbulence forecast LAX → SFO. Los Angeles to San Francisco. SkyBriefing.

Los Angeles to San Francisco: what the LAX to SFO corridor looks like

Departure: Los Angeles International Airport, Los Angeles, the United States
Arrival: San Francisco International Airport, San Francisco, the United States
Great-circle distance: 544 km (294 nm)
Typical airborne time: 1h 08m
Usual cruise levels: FL280 to FL360
Initial track: northwest bound

Route overview

The LAX to SFO sector connects Los Angeles International Airport in Los Angeles, the United States, with San Francisco International Airport in San Francisco, the United States. Measured along the great circle the two airports are 544 km apart, roughly 294 nautical miles, which is close to 1h 08m in the air before winds and routing are taken into account. The initial track is northwest bound, and the middle of the route sits in subtropical latitudes.

Leaving Los Angeles

Los Angeles International sits on the Pacific shoreline with the San Gabriel Mountains inland. Departures climb over water into the marine layer, and Santa Ana conditions in autumn add downslope wind from the ranges. The great-circle track leaves LAX northwest bound, and the first waypoint band of the flight sits close to 34.9N 119.4W. On a sector of 1h 08m, the climb to cruise takes roughly the first twenty to twenty five minutes.

A short, generally settled sector

The midpoint of the LAX to SFO track lies near 35.8N 120.4W, about 272 km from Los Angeles, which is where the corridor spends its longest continuous stretch at cruise level. This is one of the calmer sectors in its region. With a brief cruise segment, the ride is shaped mainly by conditions near the two airports rather than by anything at altitude.

Cruise altitudes on this sector

Short sectors like this one spend a large share of the flight climbing and descending, so cruise is brief and usually sits in the FL280 to FL360 band. Choice of level matters because turbulence is layered: a change of two or three thousand feet often puts the aircraft into calmer air, and that is one of the first adjustments a crew will request.

Arriving into San Francisco

Approaches into San Francisco cross coastal terrain into the marine layer. The strong afternoon westerly through the gap is the local factor that makes late day arrivals livelier than morning ones. Descent normally begins around 36.7N 121.4W, roughly 136 km before SFO, and takes about half an hour from cruise level to touchdown.

Seasonal pattern

Any month works on this sector. Early departures avoid the afternoon thermals that cause most of the low level movement.

Flying this route with less worry

It is worth remembering that turbulence of the kind found on the LAX to SFO track is uncomfortable and entirely within what the aircraft is built for. Wings are designed to flex, the flight is planned around the forecast, and the crew adjusts level or track when it helps. The live forecast above shows the current picture for this corridor so there are fewer surprises on the day.