Best Time to Fly ORD to MEM: On-Time Stats by Hour & Airline
Chicago O'Hare International → Memphis International
Data through July 2026 · Last updated October 18, 2026
2,504 flights were scheduled from Chicago (ORD) to Memphis (MEM) in the last 12 months, and 72.7% of those that flew arrived on time, 5.0 points below the US average of 77.6%.
Envoy Air was the most punctual of the 4 airlines on the route at 78.5%, while United Airlines trailed at 66.7%.
September has been the best month (80% on time) and Friday the weakest day of the week (68%).
3.4% of flights were cancelled, versus 1.8% nationally.
ORD 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 |
|---|---|---|---|---|
| Envoy Air | 78.5% | 55 min | 3.4% | 825 |
| Republic Airways | 72.1% | 74 min | 5.5% | 470 |
| SkyWest Airlines | 70.3% | 69 min | 1.7% | 860 |
| United Airlines | 66.7% | 72 min | 4.5% | 333 |
| American Airlines | Limited data | 16 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to MEM
On-time arrival % by scheduled departure hour (local time), 4,435 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 1 | |
| 6am–7am | Limited data | 20 | |
| 7am–8am | 82.0% | 0.9% | 113 |
| 8am–9am | 81.4% | 0.9% | 863 |
| 9am–10am | 80.3% | 0.8% | 235 |
| 10am–11am | 77.3% | 0.0% | 88 |
| 11am–12pm | 84.2% | 0.0% | 158 |
| 12pm–1pm | 77.8% | 1.5% | 481 |
| 1pm–2pm | 71.8% | 2.7% | 219 |
| 2pm–3pm | 66.0% | 0.0% | 53 |
| 3pm–4pm | 69.6% | 2.3% | 531 |
| 4pm–5pm | 66.2% | 7.8% | 154 |
| 5pm–6pm | 78.6% | 2.6% | 115 |
| 6pm–7pm | Limited data | 27 | |
| 7pm–8pm | 70.7% | 2.3% | 265 |
| 8pm–9pm | 63.1% | 1.9% | 616 |
| 9pm–10pm | 68.6% | 6.9% | 130 |
| 10pm–11pm | 64.6% | 5.8% | 364 |
| 11pm–12am | Limited data | 2 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORD 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) | 68.1% | -6.2 pts | 11.5% | 78 |
| Christmas & New Year (Dec 20 - Jan 3) | 65.7% | -8.6 pts | 0.0% | 144 |
| Summer peak (Jun 15 - Aug 15) | 71.0% | -3.4 pts | 1.6% | 900 |
| All other days | 74.4% | — | 2.3% | 3,313 |
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).