Route · MDW → SMF · 2020–2025 BTS data
Chicago to Sacramento
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MDW to SMF (Chicago to Sacramento) ranks #3447 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 74.2%
- On-time
- -4.8 pts
- vs US avg
- 55 min
- Delay when late
- 2,686
- Flights
- #3447 of 4927
- Corpus placement
Cancelled
0.6%
Best Month
Oct 2025 87%
Worst Month
May 2024 51%
Distance
1,790 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 14 | 0 | 0 | WN |
| Nov 2025 | 30 | 2 | 2 | 0 | WN |
| Oct 2025 | 55 | 7 | 0 | 0 | WN |
| Sep 2025 | 78 | 14 | 0 | 0 | WN |
| Aug 2025 | 78 | 25 | 0 | 0 | WN |
| Jul 2025 | 80 | 30 | 1 | 0 | WN |
| Jun 2025 | 73 | 23 | 0 | 0 | WN |
| May 2025 | 53 | 9 | 0 | 0 | WN |
| Apr 2025 | 47 | 9 | 1 | 0 | WN |
| Mar 2025 | 32 | 7 | 0 | 0 | WN |
| Feb 2025 | 30 | 5 | 0 | 0 | WN |
| Jan 2025 | 31 | 6 | 0 | 0 | WN |
| Dec 2024 | 31 | 6 | 0 | 0 | WN |
| Nov 2024 | 31 | 9 | 0 | 0 | WN |
| Oct 2024 | 56 | 9 | 0 | 1 | WN |
| Sep 2024 | 81 | 13 | 0 | 1 | WN |
| Aug 2024 | 83 | 28 | 1 | 0 | WN |
| Jul 2024 | 80 | 24 | 1 | 0 | WN |
| Jun 2024 | 73 | 29 | 0 | 2 | WN |
| May 2024 | 55 | 27 | 0 | 0 | WN |
| Apr 2024 | 50 | 16 | 0 | 0 | WN |
| Mar 2024 | 30 | 7 | 0 | 0 | WN |
| Dec 2023 | 31 | 2 | 1 | 0 | WN |
| Nov 2023 | 31 | 8 | 0 | 0 | WN |
MDW–SMF seasonal on-time pattern
Best: October (84.9%) · weakest: June (61.7%)
Strongest calendar month
October
84.9% on-time · ~41 flights/mo
Busiest calendar month
August
~61 flights/mo avg
Weakest calendar month
June
61.7% on-time · ~58 flights/mo
Cancellation Rate
0.6%
7 of 1,250 flights
Diversion Rate
0.3%
4 of 1,250 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MDW - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
MDW on-time profileSMF - Sacramento
Full on-time, delay-cause, and seasonal performance for Sacramento, CA.
SMF on-time profileCompare the two airports
See MDW and SMF side by side on delays, cancellations, and reliability.
Compare MDW vs SMFOrigin-hub reliability standing
Softer reliability from MDW
Among 69 routes leaving MDW, only 18 (including this one) clear below 75% on-time, while 0 stay ≥85% and 51 sit mid-band. Travelers comparing MDW options should weigh this 74.2% print against those peers · fleet on-time rank #4583 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to MDW–SMF.
Routes with a similar on-time rate
What the Data Says About MDW to SMF
On-time performance on the MDW to SMF pairing (Chicago to Sacramento) trails a chunk of the network: 74.2% of 2,686 tracked flights arrived on schedule, with a 54.6-minute average delay on the ones that ran late. The route spans about 1,790 miles across 1 carrier. Cancellations over the trailing 24 months hit 0.6% (7 of 1,250 flights), with 0.3% diverted.
The monthly split is wide on this route: Oct 2025 posted the strongest performance at 87% on-time, while May 2024 came in at just 51% - a 36-point swing worth factoring into travel timing.
On the multi-year calendar, MDW–SMF peaks in October at 84.9% on-time while August carries the heaviest traffic (~61 flights per month) ; the softest month is June at 61.7%, a 23.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does MDW to SMF rank among US routes by traffic? ▼
How often are flights delayed from MDW to SMF? ▼
What is the cancellation rate for MDW to SMF? ▼
How far is the flight from MDW to SMF? ▼
When is the best time to fly from MDW to SMF? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using MDW–SMF data
MDW–SMF sits 4.8 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare MDW and SMF airport profiles: delay causes and top routes differ even on the same corridor. MDW airport
- If your dates flex, October (84.9% on-time) beats June (61.7%) on this corridor. Seasonal chart
- 4 other routes post a similar 74.2% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.