Route
SMF → SLC
Sacramento International Airport Salt Lake City International Airport
How punctual is this route?
- On-time arrivals
- 87.0%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 78 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,165
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 58%
- Airline (crew, maintenance, cleaning) 37%
- Air traffic control & airport 4%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 87.8% | 180 |
| October 2025 | 89.5% | 191 |
| November 2025 | 91.1% | 182 |
| December 2025 | 84.8% | 166 |
| January 2026 | 87.7% | 156 |
| February 2026 | 87.8% | 149 |
| March 2026 | 90.3% | 169 |
| April 2026 | 87.8% | 173 |
| May 2026 | 85.9% | 200 |
| June 2026 | 85.9% | 199 |
| July 2026 | 85.6% | 206 |
| August 2026 | 81.3% | 194 |
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 |
|---|---|---|---|---|
| Delta Air Lines | 1,503 | 88.9% | 1.2% | 85 min |
| Southwest Airlines | 585 | 81.8% | 0.2% | 67 min |
| SkyWest Airlines | 77 | 90.9% | 0.0% | 62 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL1526
3% late · 365 flights
-
DL1423
14% late · 358 flights
-
DL1342
17% late · 347 flights
-
DL1367
9% late · 328 flights
-
DL2585
14% late · 84 flights
-
WN176
11% late · 47 flights
-
WN3827
5% late · 43 flights
-
OO4120
11% late · 38 flights
-
WN3828
39% late · 36 flights
-
WN3060
29% late · 34 flights
-
WN3492
0% late · 31 flights
-
WN3747
29% late · 28 flights
-
WN1010
8% late · 24 flights
-
WN2233
62% late · 24 flights
-
WN4260
0% late · 22 flights
-
DL1420
19% late · 21 flights
-
WN755
5% late · 21 flights
-
WN101
25% late · 20 flights
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