Trenton Mercer in July 2025

69.3%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 July 2025, reporting carriers scheduled 101 domestic departures from Trenton Mercer (TTN). 69.3% left less than 15 minutes late and 67.3% reached their destination on time; 5.0% were cancelled.

Nationally that month, 69.7% of flights departed on time and 69.0% arrived on time, so TTN departures were level with the national departure figure.

A year earlier, in July 2024, the airport had 142 departures with 70.4% leaving on time: a change of −1.1 points, with flights down 29%.

Flights arriving at TTN that month were on time 61.4% of the time (101 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 66%, national aviation system 27% and air carrier 8%.

On time 67.3%
Arrived 15+ minutes late 26.7%
Cancelled 5.0%
Diverted 1.0%

Every scheduled departure from TTN in July 2025, judged by arrival at the destination.

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

Measure	Jul 2025	Jul 2024	TTN, 12 months to Jul 2026	All reported flights, Jul 2025
Departed on time	69.3%	70.4%	74.6%	69.7%
Arrived on time	67.3%	69.0%	74.1%	69.0%
Cancelled	5.0%	2.8%	3.3%	2.5%
Average departure delay (late minutes only)	22.0 min	20.0 min	23.0 min	24.3 min
Scheduled departures a day	3	5	3	21,048
Scheduled departures	101	142	1,012	631,428

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
F9 Frontier Airlines	101	100%	67.3%	10.4 min	5.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
TTN–MCO	Trenton to Orlando	56	69.6%	7.4 min	3.6%
TTN–TPA	Trenton to Tampa	30	56.7%	16.2 min	10.0%
TTN–ATL	Trenton to Atlanta	8	87.5%	-5.9 min	0.0%
TTN–MYR	Trenton to Myrtle Beach	7	71.4%	30.1 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), July 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2025	Minutes
Air carrier	7.6%	31.1%	161
Late-arriving aircraft	65.9%	40.8%	1,402
National Aviation System	26.6%	20.7%	566
Extreme weather	0.0%	7.3%	0
Security	0.0%	0.1%	0

2,129 delay minutes on 27 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 TTN on time in July 2025?

69.3% of 101 scheduled domestic departures left less than 15 minutes late, and 67.3% reached their destination on time. The national figures that month were 69.7% and 69.0%.

How does that compare with a year earlier?

In July 2024, 70.4% of 142 departures left on time and 2.8% were cancelled, against 69.3% and 5.0% in July 2025.

Provenance

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