Historical on-time performance
Washington to Hilton Head Island
501 miData through Dec 2025Source: US DOT · BTS
Flights on DCA–HHH arrive on time 88% of the time over the last 12 months.
On-time rate88%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights
based on 155 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Envoy AirOn-time92%Medianon timep9010 minCancel0.0%Flights62
- Republic AirwaysOn-time86%Medianon timep9015 minCancel2.2%Flights93
Why flights run late
Delay causes
- Airline39%
- Weather14%
- Air traffic (NAS)41%
- Late aircraft6%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly DCA → HHH
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 90% on time.
- Sundays90% on time · p90 10 min · 103 flights · limited
- Mondays89% on time · p90 10 min · 102 flights · limited
- Tuesdays89% on time · p90 5 min · 99 flights · limited
- Fridays87% on time · p90 15 min · 103 flights · limited
- Wednesdays85% on time · p90 15 min · 98 flights · limited
- Thursdays84% on time · p90 20 min · 103 flights · limited
- Saturdays80% on time · p90 25 min · 142 flights · limited
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