Miami (MIA) to San Diego (SAN): On-Time Performance
Data through July 2026
When you fly MIA to SAN matters as much as anything else about the booking: the route swung from 89% on-time in March 2026 to just 40% in September 2025. Across the full period the route averages 72% on-time against a national 78%. Morning departures also hold up better than evening ones (89% vs 64%), which matters most in the rough months.
- On-time
- 72%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 1.8
- last 12 months
- Duration
- 5h 38m
- scheduled
- Distance
- 2,267 mi
Monthly on-time trend
Best time to fly from MIA to SAN
Aim for departures around 9 a.m. (90% on-time); avoid 7 p.m. departures (62%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 70% | 21 min |
| Tuesdaybest | 77% | 11 min |
| Wednesday | 75% | 20 min |
| Thursday | 59% | 24 min |
| Friday | 72% | 15 min |
| Saturday | 75% | 13 min |
| Sunday | 75% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft38%
- Airline operations31%
- National airspace system25%
- Weather5%
Frequently asked questions
- How often are flights from MIA to SAN delayed?
- 28% of MIA–SAN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 18 minutes.
- What is the best time of day to fly from MIA to SAN?
- Departures around 9 a.m. have the best record (90% on-time), while departures around 7 p.m. have the worst (62%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MIA to SAN?
- The scheduled MIA–SAN flight time averages 5h 38m over 2,267 miles. Actual arrival times vary — flights on this route land 15+ minutes late 28% of the time.
- How often are MIA to SAN flights cancelled?
- 0.9% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from MIA to SAN?
- September 2025 was the roughest month in this dataset, with only 40% of arrivals on time. The best was March 2026 at 89%. If your dates are flexible, that 49-point gap is worth planning around.
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Based on 1,242 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.