Washington (DCA) to Hilton Head (HHH): On-Time Performance
Data through July 2026
Washington (DCA) to Hilton Head (HHH) 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, 85% arrived on time, comfortably above the national average of 78%.
- On-time
- 85%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 0.90
- last 12 months
- Duration
- 2h 4m
- scheduled
- Distance
- 501 mi
Best airline from DCA to HHH
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 90% | 5 min | 0.9% | 221 |
| Republic Airways | 82% | 13 min | 1.6% | 375 |
Monthly on-time trend
Best time to fly from DCA to HHH
Aim for departures around 8 a.m. (89% on-time); avoid 1 p.m. departures (75%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 86% | 11 min |
| Tuesdaybest | 92% | 7 min |
| Wednesday | 83% | 9 min |
| Thursday | 83% | 16 min |
| Friday | 82% | 14 min |
| Saturday | 82% | 9 min |
| Sunday | 86% | 5 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft34%
- Airline operations24%
- National airspace system36%
- Weather6%
Frequently asked questions
- How often are flights from DCA to HHH delayed?
- 16% of DCA–HHH 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 10 minutes.
- Which airline is most reliable from DCA to HHH?
- Envoy Air has the best on-time record on this route at 90%, based on 221 flights. 2 airlines flew DCA–HHH frequently enough to compare in this period.
- What is the best time of day to fly from DCA to HHH?
- Departures around 8 a.m. have the best record (89% on-time), while departures around 1 p.m. have the worst (75%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DCA to HHH?
- The scheduled DCA–HHH flight time averages 2h 4m over 501 miles. Actual arrival times vary — flights on this route land 15+ minutes late 16% of the time.
- How often are DCA to HHH flights cancelled?
- 1.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from DCA to HHH?
- March 2026 was the roughest month in this dataset, with only 74% of arrivals on time. The best was August 2025 at 94%. If your dates are flexible, that 20-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.