Best Time to Fly MDW to RDU: On-Time Stats by Hour & Airline
Chicago Midway International → Raleigh-Durham International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.8% of Chicago (MDW) to Raleigh/Durham (RDU) flights arrived on time (960 scheduled flights). That is 3.2 points above 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 (85% on time) and July the worst month (67%).
The cancellation rate was 2.1% (US average 1.8%).
MDW to RDU 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 | 80.8% | 55 min | 2.1% | 960 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MDW to RDU
On-time arrival % by scheduled departure hour (local time), 1,958 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 92.7% | 0.6% | 180 |
| 8am–9am | 90.8% | 0.0% | 206 |
| 9am–10am | 91.2% | 1.7% | 174 |
| 10am–11am | 91.2% | 0.0% | 113 |
| 11am–12pm | 60.0% | 0.0% | 31 |
| 12pm–1pm | Limited data | 29 | |
| 1pm–2pm | 81.3% | 1.1% | 270 |
| 2pm–3pm | 71.2% | 0.9% | 112 |
| 3pm–4pm | 87.3% | 0.0% | 56 |
| 4pm–5pm | 84.4% | 0.0% | 65 |
| 5pm–6pm | 73.6% | 3.6% | 110 |
| 6pm–7pm | 72.7% | 2.3% | 352 |
| 7pm–8pm | 76.9% | 1.1% | 92 |
| 8pm–9pm | 67.5% | 1.2% | 162 |
| 9pm–10pm | Limited data | 6 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MDW to RDU
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) | 82.0% | -2.2 pts | 4.9% | 41 |
| Christmas & New Year (Dec 20 - Jan 3) | 76.7% | -7.6 pts | 0.0% | 90 |
| Summer peak (Jun 15 - Aug 15) | 69.5% | -14.7 pts | 1.4% | 421 |
| All other days | 84.2% | — | 1.1% | 1,406 |
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).