Best Time to Fly ORD to HHH: On-Time Stats by Hour & Airline
Chicago O'Hare International → Hilton Head Airport
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 81.5% of Chicago (ORD) to Hilton Head (HHH) flights arrived on time (214 scheduled flights). That is 3.9 points above the national average of 77.6%.
Envoy Air was the most punctual of the 2 airlines on the route at 87.3%, while Republic Airways trailed at 78.0%.
0.9% of flights were cancelled, versus 1.8% nationally.
ORD to HHH 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 | 87.3% | 56 min | 1.2% | 80 |
| Republic Airways | 78.0% | 61 min | 0.8% | 134 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to HHH
On-time arrival % by scheduled departure hour (local time), 243 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | Limited data | 6 | |
| 10am–11am | 81.4% | 0.8% | 234 |
| 11am–12pm | Limited data | 3 | |
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 HHH
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Summer peak (Jun 15 - Aug 15) | 83.8% | +5.5 pts | 0.9% | 112 |
| All other days | 78.3% | — | 0.8% | 131 |
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).