Wilmington International in May 2026

82.0%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 738 domestic departures from Wilmington International (ILM). 82.0% left less than 15 minutes late and 82.1% reached their destination on time; 0.9% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so ILM departures were 4.9 points above the national departure figure.

A year earlier, in May 2025, the airport had 656 departures with 77.7% leaving on time: a change of +4.3 points, with flights up 13%.

Flights arriving at ILM that month were on time 80.6% of the time (738 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 25% and national aviation system 19%.

On time 82.1%
Arrived 15+ minutes late 16.3%
Cancelled 0.9%
Diverted 0.7%

Every scheduled departure from ILM 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	ILM, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	82.0%	77.7%	78.3%	77.1%
Arrived on time	82.1%	75.2%	78.2%	77.6%
Cancelled	0.9%	3.2%	3.2%	0.9%
Average departure delay (late minutes only)	11.8 min	18.1 min	16.8 min	16.0 min
Scheduled departures a day	25	22	21	20,391
Scheduled departures	738	656	7,522	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
YX Republic Airline	222	30%	82.9%	-1.6 min	1.4%
AA American Airlines	187	25%	86.1%	-2.8 min	1.1%
DL Delta Air Lines	112	15%	83.0%	-4.1 min	0.9%
OH PSA Airlines	93	13%	69.9%	9.5 min	1.1%
MQ Envoy Air	69	9%	89.9%	-3.7 min	0.0%
B6 JetBlue Airways	31	4%	64.5%	13.9 min	0.0%
OO SkyWest Airlines	24	3%	87.5%	-1.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ILM–CLT	Wilmington to Charlotte	145	86.2%	-2.8 min	0.7%
ILM–ATL	Wilmington to Atlanta	112	83.0%	-4.1 min	0.9%
ILM–LGA	Wilmington to New York	96	80.2%	5.5 min	1.0%
ILM–DCA	Wilmington to Washington	74	66.2%	12.4 min	1.4%
ILM–ORD	Wilmington to Chicago	69	87.0%	-5.0 min	0.0%
ILM–BOS	Wilmington to Boston	67	65.7%	11.4 min	0.0%
ILM–DFW	Wilmington to Dallas/Fort Worth	62	83.9%	-0.2 min	1.6%
ILM–EWR	Wilmington to Newark	62	93.5%	-15.7 min	3.2%
ILM–MIA	Wilmington to Miami	46	93.5%	-5.3 min	0.0%
ILM–PHL	Wilmington to Philadelphia	3	100.0%	-29.7 min	0.0%
ILM–DEN	Wilmington to Denver	2	100.0%	1.5 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), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	25.1%	33.0%	2,050
Late-arriving aircraft	40.9%	40.4%	3,345
National Aviation System	18.9%	20.5%	1,546
Extreme weather	15.1%	6.0%	1,232
Security	0.0%	0.1%	0

8,173 delay minutes on 120 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 May 2026?

82.0% of 738 scheduled domestic departures left less than 15 minutes late, and 82.1% 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, 77.7% of 656 departures left on time and 3.2% were cancelled, against 82.0% and 0.9% 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 ILM · methodology · corrections.