ON TIMEBOARD

SBP → LAX on time

San Luis (San Luis Obispo, CA) to Los Angeles LAX (Los Angeles, CA). Every scheduled flight, September 2025 to August 2026.

On time
87%
arrived < 15 min late
Cancelled
0.3%
628 flights
Typical arrival
−10 min
median vs schedule
When late
+87 min
average delay
Flights / day
2
1 airline

87% of flights from San Luis Obispo to Los Angeles arrived on time over the past 12 months. That is better than the typical U.S. route. The 6 a.m. departures ran on time 94% of the time; the 7 a.m. ones 75%. 5% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for SBP → LAX: when a flight was late, it was under 45 minutes late 60% of the time. About 1 in 23 flights landed an hour or more late, and 1 in 48 three hours or more; 0.3% were cancelled outright.

Share of all 628 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
United Airlines62887%0.3%−10 min4.3%+87 minSkyWest

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at SBP). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%6 a.m. departures: 94% on time (171 flights)946a7 a.m. departures: 75% on time (119 flights)757a8 a.m. departures: too few flights (63 flights)8a9 a.m. departures: too few flights9a10 a.m. departures: too few flights (12 flights)10a11 a.m. departures: too few flights (6 flights)11anoon departures: too few flights12p1 p.m. departures: too few flights (16 flights)1p2 p.m. departures: too few flights (24 flights)2p3 p.m. departures: too few flights3p4 p.m. departures: too few flights (60 flights)4p5 p.m. departures: too few flights (61 flights)5p6 p.m. departures: too few flights (96 flights)6p
SBP → LAX, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

Last flight of the day

On SBP → LAX, each airline's last flight of the day was cancelled 0.4% of the time, against 0.4% for its earlier flights, about the same. It arrived 3+ hours late 0.4% of the time (earlier flights: 3.4%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.

AirlineLast departureLast: cancelledLast: 3h+ lateEarlier: cancelledNext morning
United Airlines4:25 p.m.0.4%0.4%0.4%first flight 6:00 a.m.

Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.

By month

Each calendar month pooled over 2023–2026. Best: May (92%). Worst: December (78%).

40%70%100%Jan: 82% on time (146 flights)82JanFeb: 80% on time (133 flights)80FebMar: 90% on time (137 flights)90MarApr: 92% on time (171 flights)92AprMay: 92% on time (186 flights)92MayJun: 92% on time (179 flights)92JunJul: 90% on time (176 flights)90JulAug: 91% on time (176 flights)91AugSep: 87% on time (168 flights)87SepOct: 87% on time (183 flights)87OctNov: 82% on time (140 flights)82NovDec: 78% on time (145 flights)78Dec

By day of week

DayFlightsOn timeCancelled
Monday90——
Tuesday83——
Wednesday91——
Thursday98——
Friday94——
Saturday79——
Sunday93——

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Airline (crew, maintenance, ops) 44%Late inbound plane 25%Severe weather 19%Air traffic & airport (NAS) 11%Security 1%

Cancellations: weather 1 · air traffic/airport 1

Month by month

Not enough months with data to draw a trend.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
UA 58976:00 a.m.33687%0.3%−7 minSkyWest
UA 57316:05 p.m.16590%0.6%−14 minSkyWest

Worst days in the past year

DateFlightsOn timeCancelled
Jul 29, 2026367%0
Aug 5, 2026367%0
Aug 20, 2026367%0
Jul 22, 2026367%0
Jul 15, 20263100%0

Questions

How often are flights from SBP to LAX on time?

87% of 628 scheduled flights from San Luis Obispo, CA to Los Angeles, CA arrived within 15 minutes of schedule between September 2025 and August 2026. 0.3% were cancelled.

What is the best time of day to fly SBP to LAX?

Flights scheduled to leave at 6 a.m. were the most reliable (94% on time). The 7 a.m. departures were the least (75%).

What month has the most delays from SBP to LAX?

December (78% on time). The best month is May (92%), over 2023–2026.

Is the last flight of the day from SBP to LAX more likely to be cancelled?

Not much. Each airline's last SBP–LAX flight of the day was cancelled 0.4% of the time over the past year, against 0.4% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.