Best Time to Fly DCA to HHH: On-Time Stats by Hour & Airline
Ronald Reagan Washington National → Hilton Head Airport
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 86.4% of Washington (DCA) to Hilton Head (HHH) flights arrived on time (330 scheduled flights). That is 8.8 points above the national average of 77.6%.
Among 2 airlines, Envoy Air led with 92.6% on time and Republic Airways was last with 83.3%.
Over 24 months, Tuesday was the most reliable day (92% on time) and June the worst month (81%).
The cancellation rate was 1.2% (US average 1.8%).
DCA 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 | 92.6% | 43 min | 0.0% | 108 |
| Republic Airways | 83.3% | 68 min | 1.8% | 222 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DCA to HHH
On-time arrival % by scheduled departure hour (local time), 561 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 1 | |
| 8am–9am | 89.9% | 1.1% | 353 |
| 9am–10am | 80.0% | 0.0% | 62 |
| 10am–11am | Limited data | 1 | |
| 11am–12pm | Limited data | 6 | |
| 1pm–2pm | 75.5% | 2.6% | 115 |
| 2pm–3pm | Limited data | 18 | |
| 5pm–6pm | 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 DCA to HHH
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 | 7 | ||
| Summer peak (Jun 15 - Aug 15) | 83.2% | -3.1 pts | 2.1% | 142 |
| All other days | 86.3% | — | 1.2% | 412 |
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).