Best Time to Fly MDW to MEM: On-Time Stats by Hour & Airline
Chicago Midway International → Memphis International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.9% of Chicago (MDW) to Memphis (MEM) flights arrived on time (670 scheduled flights). That is 2.3 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
October has been the best month (93% on time) and Monday the weakest day of the week (75%).
1.5% of flights were cancelled, versus 1.8% nationally.
MDW to MEM 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 | 79.9% | 61 min | 1.5% | 670 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MDW to MEM
On-time arrival % by scheduled departure hour (local time), 1,320 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 91.3% | 0.9% | 116 |
| 8am–9am | 91.3% | 1.2% | 259 |
| 9am–10am | 85.7% | 0.6% | 163 |
| 10am–11am | 87.0% | 0.7% | 155 |
| 11am–12pm | Limited data | 11 | |
| 12pm–1pm | Limited data | 1 | |
| 1pm–2pm | Limited data | 9 | |
| 2pm–3pm | Limited data | 3 | |
| 3pm–4pm | Limited data | 1 | |
| 4pm–5pm | Limited data | 11 | |
| 5pm–6pm | Limited data | 13 | |
| 6pm–7pm | Limited data | 17 | |
| 7pm–8pm | Limited data | 23 | |
| 8pm–9pm | 84.2% | 1.2% | 168 |
| 9pm–10pm | 62.5% | 1.7% | 233 |
| 10pm–11pm | 54.4% | 0.7% | 137 |
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 MEM
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) | 79.2% | -3.4 pts | 0.0% | 53 |
| Summer peak (Jun 15 - Aug 15) | 65.1% | -17.5 pts | 1.3% | 238 |
| All other days | 82.6% | — | 1.0% | 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).