Route
SAN → ORD
San Diego International Airport Chicago O'Hare International Airport
Alerts at SAN and ORD
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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
- 77.6%
- Less than 15 minutes late
- Cancelled
- 1.3%
- Of scheduled flights
- Average delay when late
- 84 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,944
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 35%
- Late-arriving aircraft 30%
- Airline (crew, maintenance, cleaning) 29%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 82.8% | 269 |
| October 2025 | 83.0% | 357 |
| November 2025 | 74.1% | 318 |
| December 2025 | 77.4% | 309 |
| January 2026 | 77.3% | 247 |
| February 2026 | 85.9% | 242 |
| March 2026 | 74.8% | 332 |
| April 2026 | 78.9% | 333 |
| May 2026 | 83.6% | 364 |
| June 2026 | 76.6% | 380 |
| July 2026 | 73.2% | 398 |
| August 2026 | 67.4% | 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 | 80.0% | 0.5% | 84 min |
| American Airlines | 1,400 | 79.5% | 1.6% | 101 min |
| Alaska Airlines | 862 | 69.7% | 2.6% | 65 min |
| Frontier Airlines | 5 | 60.0% | 0.0% | 50 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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UA1779
35% late · 364 flights
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UA2486
21% late · 319 flights
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AS1493
32% late · 257 flights
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UA2343
14% late · 242 flights
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UA1710
21% late · 237 flights
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AA2131
32% late · 224 flights
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AS1478
43% late · 216 flights
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AA518
10% late · 209 flights
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AS1446
28% late · 166 flights
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UA1457
9% late · 153 flights
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AS1495
14% late · 128 flights
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AA1494
11% late · 120 flights
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UA2624
2% late · 111 flights
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AA2343
21% late · 85 flights
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AA2065
15% late · 84 flights
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UA2677
17% late · 84 flights
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UA1069
11% late · 82 flights
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AA1261
14% late · 76 flights
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AA1543
9% late · 76 flights
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AA2484
22% late · 76 flights
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AA795
29% late · 56 flights
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AA3311
30% late · 54 flights
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AA2366
7% late · 44 flights
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AA2733
33% late · 44 flights
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