Route on-time record
SBP to SAN: most on-time flights and the best time to fly
San Luis Obispo (San Luis County Regional Airport) to San Diego (San Diego International Airport). 579 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 3.6% were cancelled. The most reliable flight number was SkyWest 3399 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SBP → SAN
San Luis Obispo to San Diego: 579 nonstop flights a year
On time (12 months)
78%
Cancelled
3.6%
avg delay 17 min
Best time to leave
Before 9 AM
83% on time vs 70% 3 to 6 PM
Most reliable airline
SkyWest
75% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · SkyWest 3399 · sold as United Express, Delta Connection, American Eagle or Alaska
6:00 AM → 7:15 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 85%
- Cancelled
- 1.4%
- Avg arrival delay
- 29 min
- Arrived on time 85% of the time (71 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 83% on time; 3 to 6 PM: 70%).
- Lands inside SAN's trouble window: 66% of its 166 ground stops and delay programs started between 6 AM and noon.
- 62% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 71 flights
Find 6:00 AM flight fares Opens this date on Aviasales#2 · SkyWest 3370 · sold as United Express, Delta Connection, American Eagle or Alaska
3:39 PM → 4:57 PM1h 18m nonstop
Local times, typical schedule. Last flown 2026-05-12.
58%
chance on time
- On time (history)
- 33%
- Cancelled
- 0.0%
- Avg arrival delay
- 36 min
- Arrived on time 33% of the time (21 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 70% on time; Before 9 AM: 83%).
Limited track record · 21 flights
Find 3:39 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)75%
579 flights · 78% on time as flown · 3.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM83%
265 flights · avg delay 17 min
- Noon to 3 PM83%
101 flights · avg delay 12 min
- 3 to 6 PM70%
212 flights · avg delay 18 min
Best day: Saturday (86%). Worst: Friday (75%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft37%
- Airline (crew, maintenance, boarding)35%
- Air traffic control and airport volume21%
- Severe weather6%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
SBP to SAN questions
- What time of day is best to fly SBP to SAN?
- Before 9 AM: 83% of flights arrived on time, against 70% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from SBP to SAN?
- SkyWest, with a season-adjusted 75% chance of operating and arriving on time over 579 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on SBP to SAN?
- April (75% on time); the best was September (86%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from SBP
- SAN to SBP (return)
- SBP to PHX 82%
- SBP to SFO 65%
- SBP to DEN 81%
- SBP to LAX 88%
- SBP to DFW 66%
Live status: FAA delays and ground stops