Lehigh Valley International in September 2025

91.4%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 September 2025, reporting carriers scheduled 243 domestic departures from Lehigh Valley International (ABE). 91.4% left less than 15 minutes late and 88.9% reached their destination on time; 0.4% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so ABE departures were 8.3 points above the national departure figure.

A year earlier, in September 2024, the airport had 321 departures with 86.0% leaving on time: a change of +5.4 points, with flights down 24%.

Flights arriving at ABE that month were on time 85.6% of the time (243 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 35%, late-arriving aircraft 34% and air carrier 25%.

On time 88.9%
Arrived 15+ minutes late 10.3%
Cancelled 0.4%
Diverted 0.4%

Every scheduled departure from ABE in September 2025, judged by arrival at the destination.

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

Measure	Sep 2025	Sep 2024	ABE, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	91.4%	86.0%	79.2%	83.1%
Arrived on time	88.9%	85.4%	77.9%	82.8%
Cancelled	0.4%	1.2%	2.0%	0.5%
Average departure delay (late minutes only)	6.9 min	17.1 min	22.7 min	12.2 min
Scheduled departures a day	8	11	9	18,748
Scheduled departures	243	321	3,375	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
G4 Allegiant Air	123	51%	87.8%	-1.5 min	0.0%
OH PSA Airlines	90	37%	90.0%	-12.8 min	1.1%
OO SkyWest Airlines	30	12%	90.0%	-8.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ABE–CLT	Allentown/Bethlehem/Easton to Charlotte	90	90.0%	-12.8 min	1.1%
ABE–SFB	Allentown/Bethlehem/Easton to Sanford	39	87.2%	-5.1 min	0.0%
ABE–ORD	Allentown/Bethlehem/Easton to Chicago	30	90.0%	-8.8 min	0.0%
ABE–MYR	Allentown/Bethlehem/Easton to Myrtle Beach	17	88.2%	-4.3 min	0.0%
ABE–PIE	Allentown/Bethlehem/Easton to St. Petersburg	17	88.2%	-0.8 min	0.0%
ABE–MLB	Allentown/Bethlehem/Easton to Melbourne	9	100.0%	-10.9 min	0.0%
ABE–PGD	Allentown/Bethlehem/Easton to Punta Gorda	9	77.8%	-4.9 min	0.0%
ABE–BNA	Allentown/Bethlehem/Easton to Nashville	8	87.5%	-2.2 min	0.0%
ABE–DEN	Allentown/Bethlehem/Easton to Denver	8	100.0%	-15.1 min	0.0%
ABE–MCO	Allentown/Bethlehem/Easton to Orlando	8	87.5%	6.4 min	0.0%
ABE–SRQ	Allentown/Bethlehem/Easton to Sarasota/Bradenton	8	75.0%	40.9 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), September 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2025	Minutes
Air carrier	25.3%	34.3%	410
Late-arriving aircraft	33.9%	37.4%	549
National Aviation System	35.3%	22.6%	571
Extreme weather	5.5%	5.6%	89
Security	0.0%	0.1%	0

1,619 delay minutes on 25 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 ABE on time in September 2025?

91.4% of 243 scheduled domestic departures left less than 15 minutes late, and 88.9% reached their destination on time. The national figures that month were 83.1% and 82.8%.

How does that compare with a year earlier?

In September 2024, 86.0% of 321 departures left on time and 1.2% were cancelled, against 91.4% and 0.4% in September 2025.

Provenance

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