Route
ORD → SAN
Chicago O'Hare International Airport San Diego International Airport
Alerts at ORD and SAN
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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
- 70.5%
- Less than 15 minutes late
- Cancelled
- 1.3%
- Of scheduled flights
- Average delay when late
- 69 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,945
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 42%
- Airline (crew, maintenance, cleaning) 27%
- Air traffic control & airport 25%
- Extreme weather 7%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 77.8% | 270 |
| October 2025 | 74.4% | 357 |
| November 2025 | 69.0% | 318 |
| December 2025 | 63.1% | 308 |
| January 2026 | 73.3% | 248 |
| February 2026 | 76.3% | 242 |
| March 2026 | 75.7% | 332 |
| April 2026 | 62.8% | 333 |
| May 2026 | 76.9% | 364 |
| June 2026 | 67.8% | 380 |
| July 2026 | 72.4% | 398 |
| August 2026 | 60.3% | 395 |
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 | 1,677 | 76.4% | 0.4% | 67 min |
| American Airlines | 1,400 | 64.3% | 1.6% | 67 min |
| Alaska Airlines | 862 | 68.7% | 2.6% | 76 min |
| Frontier Airlines | 6 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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UA660
18% late · 365 flights
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UA2683
21% late · 311 flights
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AS1470
24% late · 309 flights
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AS1447
32% late · 293 flights
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AA1543
35% late · 237 flights
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AA2131
32% late · 235 flights
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AS1466
48% late · 187 flights
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UA2428
6% late · 180 flights
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UA745
33% late · 156 flights
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UA2417
41% late · 110 flights
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AA1924
42% late · 103 flights
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AA2343
19% late · 85 flights
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AA2457
56% late · 76 flights
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AA2482
32% late · 76 flights
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AA2484
12% late · 76 flights
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UA2472
37% late · 56 flights
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AA3311
20% late · 55 flights
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UA734
27% late · 55 flights
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AA2065
41% late · 48 flights
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UA1182
32% late · 48 flights
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UA542
19% late · 47 flights
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UA1531
24% late · 46 flights
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UA249
38% late · 46 flights
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AA2285
57% late · 44 flights
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