Best Time to Fly GSO to ORD: On-Time Stats by Hour & Airline
Piedmont Triad International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 78.4% of Greensboro/High Point (GSO) to Chicago (ORD) flights arrived on time (1,563 scheduled flights). That is 0.8 points above the national average of 77.6%.
Among 3 airlines, Republic Airways led with 88.6% on time and SkyWest Airlines was last with 74.1%.
Over 24 months, Saturday was the most reliable day (79% on time) and December the worst month (67%).
The cancellation rate was 3.5% (US average 1.8%).
GSO 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 |
|---|---|---|---|---|
| Republic Airways | 88.6% | 82 min | 7.1% | 85 |
| Envoy Air | 80.1% | 86 min | 2.8% | 908 |
| SkyWest Airlines | 74.1% | 69 min | 4.0% | 570 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly GSO to ORD
On-time arrival % by scheduled departure hour (local time), 2,654 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 89.5% | 1.0% | 591 |
| 7am–8am | 87.8% | 1.5% | 408 |
| 8am–9am | 83.0% | 3.3% | 92 |
| 9am–10am | Limited data | 21 | |
| 10am–11am | 84.8% | 0.0% | 46 |
| 11am–12pm | 77.5% | 0.9% | 346 |
| 12pm–1pm | 87.8% | 0.0% | 49 |
| 1pm–2pm | 86.3% | 1.4% | 74 |
| 2pm–3pm | 62.5% | 0.0% | 32 |
| 5pm–6pm | 61.3% | 2.0% | 640 |
| 6pm–7pm | 56.1% | 5.0% | 121 |
| 7pm–8pm | 76.2% | 12.5% | 72 |
| 8pm–9pm | 71.2% | 7.0% | 157 |
| 9pm–10pm | Limited data | 5 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on GSO 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) | 54.5% | -23.6 pts | 12.7% | 63 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.5% | -4.6 pts | 0.0% | 121 |
| Summer peak (Jun 15 - Aug 15) | 76.3% | -1.9 pts | 1.9% | 366 |
| All other days | 78.1% | — | 2.2% | 2,104 |
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).