Wilmington International in August 2025

82.1%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 August 2025, reporting carriers scheduled 716 domestic departures from Wilmington International (ILM). 82.1% left less than 15 minutes late and 80.6% reached their destination on time; 1.8% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so ILM departures were 5.3 points above the national departure figure.

A year earlier, in August 2024, the airport had 869 departures with 73.6% leaving on time: a change of +8.5 points, with flights down 18%.

Flights arriving at ILM that month were on time 78.6% of the time (716 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 42%, late-arriving aircraft 42% and national aviation system 13%.

On time 80.6%
Arrived 15+ minutes late 17.5%
Cancelled 1.8%
Diverted 0.1%

Every scheduled departure from ILM in August 2025, judged by arrival at the destination.

August 2025 against a year earlier, the airport's year and the nation

Measure	Aug 2025	Aug 2024	ILM, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	82.1%	73.6%	78.3%	76.8%
Arrived on time	80.6%	71.0%	78.2%	76.3%
Cancelled	1.8%	4.8%	3.2%	1.1%
Average departure delay (late minutes only)	14.7 min	18.9 min	16.8 min	17.6 min
Scheduled departures a day	24	29	21	20,079
Scheduled departures	716	869	7,522	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
MQ Envoy Air	160	22%	79.4%	3.8 min	1.3%
AA American Airlines	149	21%	84.6%	0.1 min	2.0%
OH PSA Airlines	130	18%	76.2%	6.4 min	1.5%
DL Delta Air Lines	127	18%	82.7%	2.6 min	0.0%
YX Republic Airline	98	14%	80.6%	0.7 min	4.1%
B6 JetBlue Airways	31	4%	96.8%	-4.6 min	0.0%
OO SkyWest Airlines	21	3%	52.4%	84.4 min	9.5%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ILM–CLT	Wilmington to Charlotte	149	87.2%	-4.1 min	0.7%
ILM–ATL	Wilmington to Atlanta	118	83.1%	2.0 min	0.0%
ILM–DCA	Wilmington to Washington	88	70.5%	10.0 min	2.3%
ILM–LGA	Wilmington to New York	79	82.3%	-2.0 min	5.1%
ILM–BOS	Wilmington to Boston	71	87.3%	-1.4 min	0.0%
ILM–ORD	Wilmington to Chicago	70	62.9%	34.7 min	5.7%
ILM–DFW	Wilmington to Dallas/Fort Worth	63	82.5%	2.4 min	1.6%
ILM–PHL	Wilmington to Philadelphia	34	88.2%	3.5 min	0.0%
ILM–MIA	Wilmington to Miami	32	81.3%	11.0 min	3.1%
ILM–MSP	Wilmington to Minneapolis	9	77.8%	10.0 min	0.0%
ILM–DEN	Wilmington to Denver	3	33.3%	19.7 min	0.0%

By scheduled departure hour

100

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	42.2%	33.1%	4,240
Late-arriving aircraft	41.7%	40.5%	4,197
National Aviation System	12.7%	19.2%	1,281
Extreme weather	3.4%	7.0%	337
Security	0.0%	0.1%	1

10,056 delay minutes on 125 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 ILM on time in August 2025?

82.1% of 716 scheduled domestic departures left less than 15 minutes late, and 80.6% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 73.6% of 869 departures left on time and 4.8% were cancelled, against 82.1% and 1.8% in August 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for ILM · methodology · corrections.