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Route · DCA → HHH · 2020–2025 BTS data

Washington to Hilton Head

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DCA to HHH (Washington to Hilton Head) ranks #4557 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

86.8%
On-time
+7.8 pts
vs US avg
53 min
Delay when late
940
Flights
#4557 of 4927
Corpus placement

Cancelled

1.7%

Best Month

N/A

Worst Month

N/A

Distance

501 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Nov 2025 30 4 0 0 MQ,YX
Oct 2025 32 2 0 0 YX,MQ
Sep 2025 34 3 1 0 MQ,YX
Aug 2025 32 2 0 0 YX,MQ
Jul 2025 35 5 0 2 YX,MQ
Jun 2025 46 11 0 0 YX,MQ
May 2025 31 5 1 0 YX
Apr 2025 30 2 0 1 YX
Aug 2024 36 8 2 0 MQ,YX
Jul 2024 35 4 0 0 MQ,YX
Jun 2024 34 6 1 0 MQ,YX
May 2024 31 2 0 0 MQ,YX
Apr 2024 30 4 0 1 YX
Mar 2024 31 4 0 1 YX
Sep 2023 31 3 2 0 YX
Aug 2023 35 2 1 0 YX
Jul 2023 36 3 1 0 YX
Jun 2023 34 3 2 0 YX
May 2023 31 2 0 0 YX
Oct 2022 32 1 0 0 YX
Sep 2022 35 0 2 1 YX
Aug 2022 37 9 0 0 YX
Jul 2022 40 10 0 0 YX
Jun 2022 35 6 1 1 YX

DCA–HHH seasonal on-time pattern

Best: October (95.3%) · weakest: July (82.3%)

80%85%90%95%100% MarAprMayJunJulAugSepOctNov 86.7%

Strongest calendar month

October

95.3% on-time · ~32 flights/mo

Busiest calendar month

June

~37 flights/mo avg

Weakest calendar month

July

82.3% on-time · ~36 flights/mo

Cancellation Rate

1.7%

14 of 813 flights

Diversion Rate

0.9%

7 of 813 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

DCA - Washington

Full on-time, delay-cause, and seasonal performance for Washington, DC.

DCA on-time profile

HHH - Hilton Head

Full on-time, delay-cause, and seasonal performance for Hilton Head, SC.

HHH on-time profile

Compare the two airports

See DCA and HHH side by side on delays, cancellations, and reliability.

Compare DCA vs HHH

Origin-hub reliability standing

Among DCA's stronger departures

DCA → HHH posts a 86.8% on-time rate, landing in the ≥85% band with 4 of 91 BTS-tracked routes leaving Washington. The same hub also shows 77 mid-band and 10 challenged departures · fleet-wide on-time rank #670 of 4927 (highest on-time = #1).

What the Data Says About DCA to HHH

Washington to Hilton Head (DCA to HHH) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.8% on-time rate across 940 flights, with delays that do happen averaging 53.4 minutes. The corridor runs roughly 501 miles and is served by 3 carriers. Over the most recent 24 months, 14 of 813 flights were cancelled (1.7%) and 7 diverted (0.9%).

Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.

On the multi-year calendar, DCA–HHH peaks in October at 95.3% on-time while June carries the heaviest traffic (~37 flights per month) ; the softest month is July at 82.3%, a 13.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does DCA to HHH rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, DCA to HHH ranks #4557 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from DCA to HHH? ▼
Flights from Washington to Hilton Head have a 86.8% on-time rate based on 940 flights. The average delay is 53.4 minutes.
What is the cancellation rate for DCA to HHH? ▼
Over the last 24 months, 1.7% of flights on this route were cancelled (14 of 813 flights) and 0.9% were diverted.
How far is the flight from DCA to HHH? ▼
The flight distance from Washington (DCA) to Hilton Head (HHH) is approximately 501 miles. This route is served by 3 carriers.

Airports on this route

DCA Airport

Washington
HHH Airport

Hilton Head
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using DCA–HHH data

DCA–HHH runs 7.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare DCA and HHH airport profiles: delay causes and top routes differ even on the same corridor. DCA airport
  • If your dates flex, October (95.3% on-time) beats July (82.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 86.8% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.