Trenton Mercer in April 2025

74.7%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 146 domestic departures from Trenton Mercer (TTN). 74.7% left less than 15 minutes late and 80.1% reached their destination on time; 0.7% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so TTN departures were 5.9 points below the national departure figure.

A year earlier, in April 2024, the airport had 201 departures with 72.1% leaving on time: a change of +2.6 points, with flights down 27%.

Flights arriving at TTN that month were on time 65.8% of the time (146 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 53%, extreme weather 23% and air carrier 17%.

On time 80.1%
Arrived 15+ minutes late 19.2%
Cancelled 0.7%
Diverted 0.0%

Every scheduled departure from TTN 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	TTN, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	74.7%	72.1%	74.6%	80.6%
Arrived on time	80.1%	74.6%	74.1%	79.5%
Cancelled	0.7%	0.5%	3.3%	0.8%
Average departure delay (late minutes only)	20.2 min	25.3 min	23.0 min	14.1 min
Scheduled departures a day	5	7	3	19,465
Scheduled departures	146	201	1,012	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
F9 Frontier Airlines	146	100%	80.1%	3.6 min	0.7%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
TTN–MCO	Trenton to Orlando	63	74.6%	12.1 min	1.6%
TTN–TPA	Trenton to Tampa	41	87.8%	-11.2 min	0.0%
TTN–PBI	Trenton to West Palm Beach/Palm Beach	21	85.7%	5.1 min	0.0%
TTN–RSW	Trenton to Fort Myers	21	76.2%	6.0 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), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	16.7%	32.7%	426
Late-arriving aircraft	53.4%	39.4%	1,361
National Aviation System	7.2%	22.2%	183
Extreme weather	22.8%	5.5%	581
Security	0.0%	0.2%	0

2,551 delay minutes on 28 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 April 2025?

74.7% of 146 scheduled domestic departures left less than 15 minutes late, and 80.1% 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, 72.1% of 201 departures left on time and 0.5% were cancelled, against 74.7% and 0.7% 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 TTN · methodology · corrections.