Best Time to Fly MEM to ORD: On-Time Stats by Hour & Airline
Memphis International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.9% of Memphis (MEM) to Chicago (ORD) flights arrived on time (2,509 scheduled flights). That is 1.7 points below the national average of 77.6%.
United Airlines was the most punctual of the 4 airlines on the route at 84.4%, while SkyWest Airlines trailed at 72.0%.
October has been the best month (85% on time) and Sunday the weakest day of the week (73%).
3.7% of flights were cancelled, versus 1.8% nationally.
MEM to ORD 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 |
|---|---|---|---|---|
| United Airlines | 84.4% | 93 min | 4.2% | 336 |
| Envoy Air | 77.9% | 64 min | 3.4% | 824 |
| Republic Airways | 75.8% | 66 min | 5.5% | 473 |
| SkyWest Airlines | 72.0% | 87 min | 2.9% | 859 |
| American Airlines | Limited data | 17 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MEM to ORD
On-time arrival % by scheduled departure hour (local time), 4,438 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.6% | 1.1% | 94 |
| 6am–7am | 85.9% | 3.1% | 227 |
| 7am–8am | 84.6% | 2.0% | 1,007 |
| 8am–9am | 85.8% | 0.7% | 149 |
| 9am–10am | 84.4% | 1.3% | 372 |
| 10am–11am | 79.9% | 1.0% | 485 |
| 11am–12pm | 82.4% | 1.4% | 277 |
| 12pm–1pm | 73.5% | 0.5% | 198 |
| 1pm–2pm | 80.0% | 0.0% | 31 |
| 2pm–3pm | 68.9% | 1.9% | 523 |
| 3pm–4pm | 69.5% | 3.4% | 234 |
| 4pm–5pm | 50.4% | 2.3% | 131 |
| 5pm–6pm | 62.7% | 3.0% | 337 |
| 6pm–7pm | 56.2% | 8.2% | 255 |
| 7pm–8pm | 72.1% | 7.8% | 115 |
| 8pm–9pm | Limited data | 2 | |
| 9pm–10pm | Limited data | 1 | |
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 ORD
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) | 76.5% | -1.1 pts | 11.5% | 78 |
| Christmas & New Year (Dec 20 - Jan 3) | 72.2% | -5.3 pts | 0.0% | 144 |
| Summer peak (Jun 15 - Aug 15) | 73.7% | -3.8 pts | 2.1% | 900 |
| All other days | 77.5% | — | 2.4% | 3,316 |
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).