Route
SMF → SAN
Sacramento International Airport San Diego International Airport
Alerts at SMF and SAN
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Watch Ground Delay Program SAN
Ground Delay Program at San Diego International Airport (SAN): Average 37 minutes, up to 1 hour and 11 minutes
Reason: airport volume
Airport status
How punctual is this route?
- On-time arrivals
- 69.8%
- Less than 15 minutes late
- Cancelled
- 1.0%
- Of scheduled flights
- Average delay when late
- 51 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5,179
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 41%
- Air traffic control & airport 36%
- Airline (crew, maintenance, cleaning) 21%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 80.0% | 416 |
| October 2025 | 72.4% | 424 |
| November 2025 | 69.0% | 440 |
| December 2025 | 66.7% | 399 |
| January 2026 | 76.6% | 375 |
| February 2026 | 76.9% | 383 |
| March 2026 | 80.7% | 469 |
| April 2026 | 76.8% | 452 |
| May 2026 | 69.1% | 466 |
| June 2026 | 62.6% | 450 |
| July 2026 | 58.0% | 463 |
| August 2026 | 51.4% | 442 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 3,794 | 67.1% | 0.6% | 51 min |
| SkyWest Airlines | 1,138 | 75.6% | 2.0% | 54 min |
| Alaska Airlines | 247 | 84.6% | 2.8% | 43 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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OO3439
25% late · 228 flights
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OO3410
35% late · 136 flights
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OO3368
15% late · 133 flights
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OO3006
14% late · 131 flights
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OO3398
8% late · 106 flights
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OO3015
33% late · 100 flights
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AS1340
12% late · 78 flights
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AS1680
23% late · 70 flights
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OO3036
46% late · 69 flights
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WN3138
21% late · 64 flights
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WN2375
43% late · 60 flights
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WN3658
47% late · 60 flights
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WN4032
31% late · 59 flights
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WN332
28% late · 58 flights
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WN4082
38% late · 58 flights
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WN443
7% late · 58 flights
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WN1772
35% late · 57 flights
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WN3260
7% late · 57 flights
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WN1264
11% late · 55 flights
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WN3671
25% late · 53 flights
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WN3674
32% late · 53 flights
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WN1460
25% late · 52 flights
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WN2216
58% late · 50 flights
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WN2235
34% late · 50 flights
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