Route
SMF → DEN
Sacramento International Airport Denver International Airport
How punctual is this route?
- On-time arrivals
- 83.1%
- Less than 15 minutes late
- Cancelled
- 0.2%
- Of scheduled flights
- Average delay when late
- 63 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,844
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Air traffic control & airport 28%
- Airline (crew, maintenance, cleaning) 26%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 81.6% | 344 |
| October 2025 | 89.9% | 335 |
| November 2025 | 86.7% | 317 |
| December 2025 | 74.6% | 302 |
| January 2026 | 84.0% | 262 |
| February 2026 | 88.0% | 260 |
| March 2026 | 84.5% | 291 |
| April 2026 | 86.9% | 290 |
| May 2026 | 85.9% | 321 |
| June 2026 | 82.0% | 376 |
| July 2026 | 79.2% | 395 |
| August 2026 | 76.1% | 351 |
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 |
|---|---|---|---|---|
| Southwest Airlines | 1,858 | 77.5% | 0.2% | 55 min |
| United Airlines | 1,791 | 89.0% | 0.3% | 78 min |
| Frontier Airlines | 194 | 81.2% | 0.0% | 83 min |
| SkyWest Airlines | 1 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA2285
3% late · 341 flights
-
UA1889
4% late · 339 flights
-
UA566
16% late · 308 flights
-
UA1841
18% late · 210 flights
-
F93666
19% late · 193 flights
-
UA1961
19% late · 160 flights
-
UA1351
22% late · 129 flights
-
UA1023
9% late · 103 flights
-
WN236
5% late · 58 flights
-
WN3626
16% late · 57 flights
-
WN4331
27% late · 56 flights
-
WN983
34% late · 56 flights
-
UA1691
15% late · 55 flights
-
UA1488
4% late · 52 flights
-
WN3773
4% late · 52 flights
-
WN3775
25% late · 52 flights
-
WN1479
14% late · 50 flights
-
WN4329
12% late · 50 flights
-
WN1354
45% late · 49 flights
-
WN2065
9% late · 47 flights
-
WN1192
39% late · 46 flights
-
WN2816
11% late · 46 flights
-
WN4360
15% late · 46 flights
-
WN4105
55% late · 44 flights
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