Route
SMF → ORD
Sacramento International Airport Chicago O'Hare International Airport
How punctual is this route?
- On-time arrivals
- 79.3%
- Less than 15 minutes late
- Cancelled
- 1.5%
- Of scheduled flights
- Average delay when late
- 89 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,347
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 36%
- Late-arriving aircraft 34%
- Airline (crew, maintenance, cleaning) 29%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 81.9% | 117 |
| October 2025 | 82.9% | 124 |
| November 2025 | 75.9% | 91 |
| December 2025 | 78.7% | 75 |
| January 2026 | 77.6% | 67 |
| February 2026 | 91.1% | 56 |
| March 2026 | 77.1% | 113 |
| April 2026 | 81.7% | 149 |
| May 2026 | 86.1% | 152 |
| June 2026 | 75.9% | 137 |
| July 2026 | 75.2% | 141 |
| August 2026 | 71.0% | 125 |
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 | 990 | 81.2% | 1.3% | 79 min |
| American Airlines | 357 | 74.0% | 2.0% | 110 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1278
15% late · 218 flights
-
UA1148
14% late · 159 flights
-
UA2370
15% late · 156 flights
-
UA2274
30% late · 104 flights
-
UA587
12% late · 77 flights
-
AA2627
32% late · 64 flights
-
AA3060
6% late · 55 flights
-
UA2635
9% late · 55 flights
-
UA2766
39% late · 46 flights
-
AA2898
20% late · 44 flights
-
AA2033
27% late · 43 flights
-
UA1082
17% late · 37 flights
-
UA1850
34% late · 35 flights
-
AA3244
25% late · 33 flights
-
AA902
33% late · 30 flights
-
AA1906
46% late · 27 flights
-
AA2134
35% late · 26 flights
-
AA3042
30% late · 25 flights
-
UA2243
21% late · 24 flights
-
UA1155
38% late · 21 flights
-
UA2362
20% late · 20 flights
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