Best Time to Fly ROC to MDW: On-Time Stats by Hour & Airline
Frederick Douglass Grtr Rochester International → Chicago Midway International
Data through July 2026 · Last updated October 18, 2026
496 flights were scheduled from Rochester (ROC) to Chicago (MDW) in the last 12 months, and 78.0% of those that flew arrived on time, in line with the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
October has been the best month (92% on time) and Monday the weakest day of the week (70%).
1.6% of flights were cancelled, versus 1.8% nationally.
ROC to MDW on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 78.0% | 60 min | 1.6% | 496 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ROC to MDW
On-time arrival % by scheduled departure hour (local time), 638 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 91.1% | 1.8% | 57 |
| 7am–8am | 89.9% | 0.6% | 160 |
| 8am–9am | 88.2% | 1.6% | 122 |
| 9am–10am | Limited data | 19 | |
| 1pm–2pm | Limited data | 9 | |
| 3pm–4pm | Limited data | 21 | |
| 4pm–5pm | Limited data | 5 | |
| 5pm–6pm | Limited data | 14 | |
| 6pm–7pm | 80.8% | 2.5% | 80 |
| 7pm–8pm | 47.4% | 2.6% | 117 |
| 8pm–9pm | 81.2% | 5.9% | 34 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ROC to MDW
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 6 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 15 | ||
| Summer peak (Jun 15 - Aug 15) | 75.9% | -5.5 pts | 2.8% | 176 |
| All other days | 81.4% | — | 1.4% | 441 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).