Wilmington International in April 2025

82.6%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 April 2025, reporting carriers scheduled 598 domestic departures from Wilmington International (ILM). 82.6% left less than 15 minutes late and 83.8% reached their destination on time; 2.0% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so ILM departures were 2.0 points above the national departure figure.

A year earlier, in April 2024, the airport had 595 departures with 82.2% leaving on time: a change of +0.4 points, with flights up 1%.

Flights arriving at ILM that month were on time 77.4% of the time (597 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 57%, air carrier 23% and national aviation system 20%.

On time 83.8%
Arrived 15+ minutes late 14.0%
Cancelled 2.0%
Diverted 0.2%

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

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

Measure	Apr 2025	Apr 2024	ILM, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	82.6%	82.2%	78.3%	80.6%
Arrived on time	83.8%	77.5%	78.2%	79.5%
Cancelled	2.0%	0.5%	3.2%	0.8%
Average departure delay (late minutes only)	16.4 min	11.9 min	16.8 min	14.1 min
Scheduled departures a day	20	20	21	19,465
Scheduled departures	598	595	7,522	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	145	24%	86.9%	-1.2 min	0.7%
MQ Envoy Air	144	24%	84.0%	-2.9 min	1.4%
YX Republic Airline	134	22%	81.3%	3.9 min	4.5%
OH PSA Airlines	113	19%	79.6%	24.2 min	2.7%
DL Delta Air Lines	61	10%	88.5%	0.0 min	0.0%
B6 JetBlue Airways	1	0%	100.0%	-24.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ILM–CLT	Wilmington to Charlotte	198	82.8%	-0.1 min	1.0%
ILM–LGA	Wilmington to New York	86	89.5%	-0.8 min	0.0%
ILM–ATL	Wilmington to Atlanta	61	88.5%	0.0 min	0.0%
ILM–DCA	Wilmington to Washington	60	81.7%	33.2 min	1.7%
ILM–DFW	Wilmington to Dallas/Fort Worth	60	85.0%	-6.6 min	3.3%
ILM–EWR	Wilmington to Newark	44	63.6%	16.9 min	13.6%
ILM–BOS	Wilmington to Boston	32	90.6%	-10.4 min	0.0%
ILM–MIA	Wilmington to Miami	30	93.3%	1.3 min	0.0%
ILM–PHL	Wilmington to Philadelphia	27	77.8%	27.9 min	3.7%

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), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	22.8%	32.7%	2,023
Late-arriving aircraft	56.6%	39.4%	5,031
National Aviation System	19.5%	22.2%	1,733
Extreme weather	1.1%	5.5%	99
Security	0.0%	0.2%	0

8,886 delay minutes on 84 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 April 2025?

82.6% of 598 scheduled domestic departures left less than 15 minutes late, and 83.8% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 82.2% of 595 departures left on time and 0.5% were cancelled, against 82.6% and 2.0% in April 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 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.