Hilton Head (HHH) to Washington (DCA): On-Time Performance
Data through July 2026
Hilton Head (HHH) to Washington (DCA) is a thinner route than most in this dataset — 330 departures over the past year, roughly 6 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 81% arrived on time.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 2.3%
- Flights/day
- 0.90
- last 12 months
- Duration
- 1h 46m
- scheduled
- Distance
- 501 mi
Best airline from HHH to DCA
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 88% | 10 min | 1.4% | 221 |
| Republic Airways | 77% | 21 min | 2.9% | 375 |
Monthly on-time trend
Best time to fly from HHH to DCA
Aim for departures around 11 a.m. (86% on-time); avoid 4 p.m. departures (62%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 84% | 17 min |
| Tuesdaybest | 86% | 16 min |
| Wednesday | 83% | 18 min |
| Thursday | 80% | 16 min |
| Friday | 79% | 15 min |
| Saturday | 76% | 19 min |
| Sunday | 81% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft52%
- Airline operations22%
- National airspace system13%
- Weather13%
Frequently asked questions
- How often are flights from HHH to DCA delayed?
- 19% of HHH–DCA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 17 minutes.
- Which airline is most reliable from HHH to DCA?
- Envoy Air has the best on-time record on this route at 88%, based on 221 flights. 2 airlines flew HHH–DCA frequently enough to compare in this period.
- What is the best time of day to fly from HHH to DCA?
- Departures around 11 a.m. have the best record (86% on-time), while departures around 4 p.m. have the worst (62%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from HHH to DCA?
- The scheduled HHH–DCA flight time averages 1h 46m over 501 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are HHH to DCA flights cancelled?
- 2.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from HHH to DCA?
- March 2026 was the roughest month in this dataset, with only 64% of arrivals on time. The best was September 2025 at 94%. If your dates are flexible, that 30-point gap is worth planning around.
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Based on 596 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.