Route
SAN → SFO
San Diego International Airport San Francisco International Airport
Alerts at SAN and SFO
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Read the story →
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
- 59.5%
- Less than 15 minutes late
- Cancelled
- 1.3%
- Of scheduled flights
- Average delay when late
- 63 min
- Flights arriving 15+ minutes late
- Flights tracked
- 6,763
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 53%
- Late-arriving aircraft 32%
- Airline (crew, maintenance, cleaning) 13%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 73.3% | 581 |
| October 2025 | 65.4% | 662 |
| November 2025 | 68.2% | 565 |
| December 2025 | 68.3% | 485 |
| January 2026 | 82.9% | 505 |
| February 2026 | 76.8% | 443 |
| March 2026 | 83.1% | 490 |
| April 2026 | 52.3% | 519 |
| May 2026 | 42.6% | 540 |
| June 2026 | 38.8% | 618 |
| July 2026 | 39.0% | 659 |
| August 2026 | 39.9% | 696 |
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 |
|---|---|---|---|---|
| United Airlines | 2,666 | 67.2% | 0.6% | 60 min |
| Southwest Airlines | 2,070 | 52.4% | 1.3% | 63 min |
| SkyWest Airlines | 1,482 | 59.8% | 2.0% | 66 min |
| Alaska Airlines | 331 | 53.1% | 1.5% | 54 min |
| Frontier Airlines | 214 | 37.9% | 5.1% | 75 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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UA2117
27% late · 358 flights
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UA1763
29% late · 322 flights
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OO3347
44% late · 276 flights
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OO3463
45% late · 226 flights
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UA2309
37% late · 205 flights
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OO3352
32% late · 189 flights
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UA2863
37% late · 185 flights
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UA2274
46% late · 180 flights
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UA1302
41% late · 169 flights
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UA2278
65% late · 155 flights
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AS291
54% late · 146 flights
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UA1871
24% late · 126 flights
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F93383
79% late · 123 flights
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OO3482
26% late · 120 flights
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UA505
40% late · 108 flights
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UA2428
29% late · 102 flights
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UA2855
17% late · 92 flights
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F93381
40% late · 86 flights
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OO3205
78% late · 69 flights
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OO3232
71% late · 69 flights
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UA285
22% late · 68 flights
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UA2830
15% late · 67 flights
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WN2956
42% late · 63 flights
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OO3305
69% late · 61 flights
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