Best Time to Fly DAL to MDW: On-Time Stats by Hour & Airline
Dallas Love Field → Chicago Midway International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 69.8% of Dallas (DAL) to Chicago (MDW) flights arrived on time (2,179 scheduled flights). That is 7.8 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
February has been the best month (85% on time) and Sunday the weakest day of the week (69%).
2.0% of flights were cancelled, versus 1.8% nationally.
DAL 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 | 69.8% | 54 min | 2.0% | 2,179 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DAL to MDW
On-time arrival % by scheduled departure hour (local time), 4,421 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 92.3% | 1.5% | 527 |
| 7am–8am | 89.9% | 0.6% | 341 |
| 8am–9am | 89.4% | 2.1% | 144 |
| 9am–10am | 77.1% | 1.4% | 214 |
| 10am–11am | 80.3% | 1.4% | 289 |
| 11am–12pm | 77.6% | 3.7% | 215 |
| 12pm–1pm | 77.9% | 1.5% | 203 |
| 1pm–2pm | 75.2% | 1.2% | 167 |
| 2pm–3pm | 72.2% | 2.2% | 410 |
| 3pm–4pm | 67.9% | 3.5% | 143 |
| 4pm–5pm | 58.7% | 0.7% | 289 |
| 5pm–6pm | 69.0% | 1.6% | 244 |
| 6pm–7pm | 61.4% | 1.2% | 246 |
| 7pm–8pm | 58.8% | 2.5% | 434 |
| 8pm–9pm | 66.3% | 0.5% | 195 |
| 9pm–10pm | 60.0% | 1.8% | 168 |
| 10pm–11pm | 57.8% | 3.1% | 192 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DAL 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) | 79.1% | +3.4 pts | 4.4% | 91 |
| Christmas & New Year (Dec 20 - Jan 3) | 72.1% | -3.6 pts | 1.0% | 193 |
| Summer peak (Jun 15 - Aug 15) | 64.4% | -11.3 pts | 1.9% | 833 |
| All other days | 75.7% | — | 1.7% | 3,304 |
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).