Route
SAN → SMF
San Diego International Airport Sacramento International Airport
Alerts at SAN and SMF
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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
- 74.5%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 51 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5,181
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 69%
- Airline (crew, maintenance, cleaning) 20%
- Air traffic control & airport 9%
- Extreme weather 1%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 81.3% | 416 |
| October 2025 | 76.5% | 421 |
| November 2025 | 76.3% | 441 |
| December 2025 | 70.3% | 398 |
| January 2026 | 82.4% | 375 |
| February 2026 | 79.3% | 382 |
| March 2026 | 81.2% | 469 |
| April 2026 | 80.4% | 452 |
| May 2026 | 74.4% | 466 |
| June 2026 | 66.7% | 450 |
| July 2026 | 66.8% | 462 |
| August 2026 | 61.1% | 449 |
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 | 3,798 | 73.0% | 0.6% | 51 min |
| SkyWest Airlines | 1,136 | 80.0% | 1.4% | 54 min |
| Alaska Airlines | 247 | 73.4% | 2.4% | 46 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
24% late · 267 flights
-
OO3006
18% late · 197 flights
-
OO3368
10% late · 192 flights
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OO3410
25% late · 160 flights
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OO3349
24% late · 105 flights
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AS1621
39% late · 70 flights
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OO3035
19% late · 70 flights
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WN1899
17% late · 63 flights
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WN4264
31% late · 62 flights
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WN3544
8% late · 61 flights
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WN3551
68% late · 60 flights
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WN677
12% late · 59 flights
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WN743
26% late · 59 flights
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WN3431
5% late · 58 flights
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WN3980
31% late · 58 flights
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WN3623
19% late · 57 flights
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WN4126
5% late · 57 flights
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WN4131
23% late · 57 flights
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WN4134
37% late · 57 flights
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WN1580
24% late · 55 flights
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WN3982
22% late · 55 flights
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WN3979
0% late · 53 flights
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WN3983
23% late · 53 flights
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AS628
15% late · 52 flights
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