Best Time to Fly ORF to MDW: On-Time Stats by Hour & Airline
Norfolk International → Chicago Midway International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.9% of Norfolk (ORF) to Chicago (MDW) flights arrived on time (577 scheduled flights). That is 1.7 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (84% on time) and March the worst month (63%).
The cancellation rate was 1.7% (US average 1.8%).
ORF 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 | 75.9% | 57 min | 1.7% | 577 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORF to MDW
On-time arrival % by scheduled departure hour (local time), 1,156 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.4% | 1.5% | 200 |
| 6am–7am | 91.9% | 3.1% | 64 |
| 7am–8am | 92.2% | 0.8% | 234 |
| 8am–9am | 87.8% | 0.0% | 41 |
| 9am–10am | Limited data | 1 | |
| 10am–11am | Limited data | 13 | |
| 11am–12pm | Limited data | 24 | |
| 12pm–1pm | Limited data | 9 | |
| 1pm–2pm | 68.3% | 0.0% | 41 |
| 2pm–3pm | Limited data | 27 | |
| 3pm–4pm | 56.5% | 2.1% | 48 |
| 4pm–5pm | Limited data | 12 | |
| 5pm–6pm | 85.9% | 0.0% | 92 |
| 6pm–7pm | 67.4% | 0.8% | 133 |
| 7pm–8pm | 54.9% | 1.9% | 160 |
| 8pm–9pm | 57.1% | 1.8% | 57 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORF 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 | 24 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 76.5% | -7.6 pts | 0.0% | 51 |
| Summer peak (Jun 15 - Aug 15) | 69.1% | -15.0 pts | 1.2% | 337 |
| All other days | 84.0% | — | 1.1% | 744 |
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).