Route
ORD → SFO
Chicago O'Hare International Airport San Francisco International Airport
Alerts at ORD and SFO
How punctual is this route?
- On-time arrivals
- 66.2%
- Less than 15 minutes late
- Cancelled
- 1.1%
- Of scheduled flights
- Average delay when late
- 77 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5,649
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 42%
- Air traffic control & airport 32%
- Airline (crew, maintenance, cleaning) 23%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 77.6% | 490 |
| October 2025 | 70.8% | 522 |
| November 2025 | 69.3% | 412 |
| December 2025 | 66.2% | 392 |
| January 2026 | 74.2% | 327 |
| February 2026 | 73.0% | 356 |
| March 2026 | 74.5% | 459 |
| April 2026 | 65.9% | 523 |
| May 2026 | 59.2% | 559 |
| June 2026 | 49.9% | 530 |
| July 2026 | 63.7% | 523 |
| August 2026 | 59.2% | 556 |
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 | 3,883 | 69.1% | 0.8% | 79 min |
| American Airlines | 1,766 | 59.9% | 1.6% | 75 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1577
27% late · 357 flights
-
UA2179
54% late · 318 flights
-
AA1253
34% late · 311 flights
-
UA2106
26% late · 206 flights
-
UA343
25% late · 197 flights
-
UA246
7% late · 180 flights
-
UA543
42% late · 180 flights
-
UA1495
53% late · 174 flights
-
UA1116
12% late · 156 flights
-
UA511
39% late · 154 flights
-
UA1334
37% late · 145 flights
-
UA1097
21% late · 135 flights
-
UA2251
34% late · 131 flights
-
AA2113
41% late · 129 flights
-
UA2465
25% late · 127 flights
-
AA2418
41% late · 99 flights
-
UA2610
45% late · 91 flights
-
AA1586
41% late · 90 flights
-
AA3141
46% late · 89 flights
-
UA1807
10% late · 83 flights
-
AA1620
70% late · 76 flights
-
AA2543
15% late · 76 flights
-
AA2550
60% late · 76 flights
-
AA3054
68% late · 76 flights
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