Route
ONT → SMF
Ontario International Airport Sacramento International Airport
How punctual is this route?
- On-time arrivals
- 85.1%
- Less than 15 minutes late
- Cancelled
- 0.3%
- Of scheduled flights
- Average delay when late
- 57 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,119
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 73%
- Airline (crew, maintenance, cleaning) 24%
- Air traffic control & airport 3%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 93.2% | 177 |
| October 2025 | 81.8% | 181 |
| November 2025 | 89.8% | 178 |
| December 2025 | 85.5% | 179 |
| January 2026 | 87.1% | 155 |
| February 2026 | 85.5% | 152 |
| March 2026 | 88.0% | 183 |
| April 2026 | 83.1% | 184 |
| May 2026 | 79.6% | 187 |
| June 2026 | 76.8% | 177 |
| July 2026 | 85.1% | 183 |
| August 2026 | 86.8% | 183 |
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 | 2,119 | 85.1% | 0.3% | 57 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN1242
19% late · 64 flights
-
WN3165
3% late · 61 flights
-
WN3170
30% late · 60 flights
-
WN3044
10% late · 58 flights
-
WN3047
14% late · 58 flights
-
WN3544
7% late · 58 flights
-
WN3675
0% late · 58 flights
-
WN3680
26% late · 58 flights
-
WN1622
4% late · 55 flights
-
WN1130
14% late · 50 flights
-
WN3043
6% late · 50 flights
-
WN3676
0% late · 49 flights
-
WN1196
4% late · 46 flights
-
WN670
29% late · 43 flights
-
WN1560
17% late · 42 flights
-
WN3681
36% late · 42 flights
-
WN726
17% late · 42 flights
-
WN4001
18% late · 40 flights
-
WN2577
13% late · 38 flights
-
WN3166
8% late · 36 flights
-
WN2298
14% late · 35 flights
-
WN1300
3% late · 33 flights
-
WN1652
0% late · 33 flights
-
WN4142
25% late · 32 flights
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