Historical on-time performance

LAXSFO

Los Angeles to San Francisco

337 miData through Dec 2025Source: US DOT · BTS

Flights on LAX–SFO arrive on time 73% of the time over the last 12 months.

On-time rate73%arrived within 15 min

Median delayon timetypical arrival

p90 delay50 min1 in 10 flights is worsetail risk

Cancelled0.4%of scheduled flights

based on 10,584 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Airline	On-time	Median	p90	Cancel	Flights
Frontier Airlines	62%	on time	80 min	1.1%	353
SkyWest Airlinesbest	77%	on time	45 min	0.7%	2,689
United Airlines	75%	on time	40 min	0.2%	3,342
Delta Air Lines	72%	on time	50 min	0.3%	2,362
American Airlines	71%	on time	60 min	0.2%	463
Alaska Airlines⚠ low data	66%	on time	25 min	0.0%	35
Southwest Airlines	68%	on time	60 min	0.3%	1,340

Frontier Airlines
On-time62%
Medianon time
p9080 min
Cancel1.1%
Flights353
SkyWest Airlinesbest
On-time77%
Medianon time
p9045 min
Cancel0.7%
Flights2,689
United Airlines
On-time75%
Medianon time
p9040 min
Cancel0.2%
Flights3,342
Delta Air Lines
On-time72%
Medianon time
p9050 min
Cancel0.3%
Flights2,362
American Airlines
On-time71%
Medianon time
p9060 min
Cancel0.2%
Flights463
Alaska Airlines
On-time66%
Medianon time
p9025 min
Cancel0.0%
Flights35
Southwest Airlines
On-time68%
Medianon time
p9060 min
Cancel0.3%
Flights1,340

Why flights run late

Delay causes

Airline26%
Weather2%
Air traffic (NAS)42%
Late aircraft29%
Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

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Related pages

Delay predictorfor this route→LAX airportLos Angeles→SFO airportSan Francisco→Envoy Air on this routecarrier detail→Envoy Airairline profile→