Route
MDW → SMF
Chicago Midway International Airport Sacramento International Airport
How punctual is this route?
- On-time arrivals
- 67.4%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 672
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 49%
- Airline (crew, maintenance, cleaning) 30%
- Air traffic control & airport 16%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 82.1% | 78 |
| October 2025 | 87.3% | 55 |
| November 2025 | 92.9% | 30 |
| December 2025 | 54.8% | 31 |
| January 2026 | 86.7% | 31 |
| February 2026 | 85.7% | 28 |
| March 2026 | 64.3% | 58 |
| April 2026 | 63.3% | 60 |
| May 2026 | 64.5% | 62 |
| June 2026 | 50.6% | 79 |
| July 2026 | 57.8% | 85 |
| August 2026 | 54.7% | 75 |
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 | 672 | 67.4% | 0.9% | 60 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN4121
60% late · 60 flights
-
WN2766
9% late · 58 flights
-
WN3388
24% late · 58 flights
-
WN3417
43% late · 58 flights
-
WN1287
18% late · 46 flights
-
WN2094
29% late · 35 flights
-
WN1030
61% late · 32 flights
-
WN198
16% late · 31 flights
-
WN1790
19% late · 27 flights
-
WN2406
7% late · 27 flights
-
WN2897
44% late · 27 flights
-
WN4713
44% late · 27 flights
-
WN2409
27% late · 26 flights
-
WN4007
21% late · 25 flights
-
WN859
36% late · 25 flights
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