Best Time to Fly MEM to MDW: On-Time Stats by Hour & Airline
Memphis International → Chicago Midway International
Data through July 2026 · Last updated October 18, 2026
670 flights were scheduled from Memphis (MEM) to Chicago (MDW) in the last 12 months, and 83.7% of those that flew arrived on time, 6.1 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (88% on time) and March the worst month (78%).
The cancellation rate was 1.8% (US average 1.8%).
MEM 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 | 83.7% | 59 min | 1.8% | 670 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MEM to MDW
On-time arrival % by scheduled departure hour (local time), 1,322 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 91.0% | 1.6% | 383 |
| 6am–7am | 92.0% | 1.4% | 141 |
| 7am–8am | 91.3% | 2.0% | 152 |
| 8am–9am | Limited data | 2 | |
| 9am–10am | Limited data | 8 | |
| 10am–11am | Limited data | 2 | |
| 11am–12pm | Limited data | 1 | |
| 12pm–1pm | Limited data | 12 | |
| 1pm–2pm | 80.7% | 0.0% | 31 |
| 2pm–3pm | Limited data | 9 | |
| 3pm–4pm | 80.9% | 0.8% | 259 |
| 4pm–5pm | 67.3% | 1.2% | 162 |
| 5pm–6pm | 69.3% | 0.9% | 115 |
| 6pm–7pm | 88.9% | 0.0% | 45 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MEM 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) | 85.5% | +0.8 pts | 0.0% | 55 |
| Summer peak (Jun 15 - Aug 15) | 83.0% | -1.7 pts | 1.3% | 238 |
| All other days | 84.7% | — | 1.3% | 1,005 |
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).