Trenton Mercer in May 2026

80.2%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 101 domestic departures from Trenton Mercer (TTN). 80.2% left less than 15 minutes late and 82.2% reached their destination on time; 1.0% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so TTN departures were 3.1 points above the national departure figure.

A year earlier, in May 2025, the airport had 87 departures with 75.9% leaving on time: a change of +4.3 points, with flights up 16%.

Flights arriving at TTN that month were on time 80.0% of the time (100 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 72%, national aviation system 23% and air carrier 6%.

On time 82.2%
Arrived 15+ minutes late 15.8%
Cancelled 1.0%
Diverted 1.0%

Every scheduled departure from TTN 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	TTN, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	80.2%	75.9%	74.6%	77.1%
Arrived on time	82.2%	74.7%	74.1%	77.6%
Cancelled	1.0%	0.0%	3.3%	0.9%
Average departure delay (late minutes only)	11.8 min	24.9 min	23.0 min	16.0 min
Scheduled departures a day	3	3	3	20,391
Scheduled departures	101	87	1,012	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
F9 Frontier Airlines	73	72%	83.6%	-1.2 min	1.4%
G4 Allegiant Air	28	28%	78.6%	2.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
TTN–MCO	Trenton to Orlando	54	92.6%	-10.3 min	0.0%
TTN–TPA	Trenton to Tampa	19	57.9%	26.1 min	5.3%
TTN–PIE	Trenton to St. Petersburg	10	90.0%	-16.1 min	0.0%
TTN–FLL	Trenton to Fort Lauderdale	9	88.9%	6.7 min	0.0%
TTN–PGD	Trenton to Punta Gorda	9	55.6%	17.1 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), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	5.7%	33.0%	61
Late-arriving aircraft	71.7%	40.4%	762
National Aviation System	22.6%	20.5%	240
Extreme weather	0.0%	6.0%	0
Security	0.0%	0.1%	0

1,063 delay minutes on 16 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 May 2026?

80.2% of 101 scheduled domestic departures left less than 15 minutes late, and 82.2% 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, 75.9% of 87 departures left on time and 0.0% were cancelled, against 80.2% and 1.0% 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 TTN · methodology · corrections.