Hilton Head Airport in May 2026

77.2%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In May 2026, reporting carriers scheduled 311 domestic departures from Hilton Head Airport (HHH). 77.2% left less than 15 minutes late and 77.5% reached their destination on time; 0.6% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so HHH departures were level with the national departure figure.

A year earlier, in May 2025, the airport had 253 departures with 70.0% leaving on time: a change of +7.2 points, with flights up 23%.

Flights arriving at HHH that month were on time 79.7% of the time (311 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 47%, air carrier 32% and national aviation system 13%.

On time 77.5%
Arrived 15+ minutes late 19.3%
Cancelled 0.6%
Diverted 2.6%

Every scheduled departure from HHH in May 2026, judged by arrival at the destination.

May 2026 against a year earlier, the airport's year and the nation

Measure	May 2026	May 2025	HHH, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	77.2%	70.0%	79.6%	77.1%
Arrived on time	77.5%	70.0%	79.7%	77.6%
Cancelled	0.6%	4.0%	1.7%	0.9%
Average departure delay (late minutes only)	23.2 min	21.4 min	20.8 min	16.0 min
Scheduled departures a day	10	8	7	20,391
Scheduled departures	311	253	2,373	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
MQ Envoy Air	160	51%	87.5%	-4.8 min	1.3%
YX Republic Airline	151	49%	66.9%	23.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
HHH–CLT	Hilton Head to Charlotte	136	88.2%	-7.0 min	0.7%
HHH–ORD	Hilton Head to Chicago	42	69.0%	15.4 min	2.4%
HHH–DCA	Hilton Head to Washington	36	77.8%	27.7 min	0.0%
HHH–ATL	Hilton Head to Atlanta	31	74.2%	26.0 min	0.0%
HHH–EWR	Hilton Head to Newark	31	90.3%	-21.0 min	0.0%
HHH–LGA	Hilton Head to New York	31	38.7%	52.4 min	0.0%
HHH–BOS	Hilton Head to Boston	2	0.0%	93.0 min	0.0%
HHH–PHL	Hilton Head to Philadelphia	2	50.0%	96.5 min	0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	32.1%	33.0%	2,023
Late-arriving aircraft	46.9%	40.4%	2,959
National Aviation System	12.5%	20.5%	791
Extreme weather	8.5%	6.0%	537
Security	0.0%	0.1%	0

6,310 delay minutes on 60 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left HHH on time in May 2026?

77.2% of 311 scheduled domestic departures left less than 15 minutes late, and 77.5% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 70.0% of 253 departures left on time and 4.0% were cancelled, against 77.2% and 0.6% in May 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2026; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for HHH · methodology · corrections.