How often are flights delayed at TTN?

23% of departures from Trenton Mercer Airport left 15+ minutes late between 2024-07 and 2026-07, with an average departure delay of 21 minutes. The national on-time average over the same period was 78%.

What is the best time of day to depart from TTN?

Flights scheduled around 8 a.m. depart on time 87% of the time at TTN, versus 62% around 5 p.m.. Booking before noon is the usual rule of thumb here.

What is the worst month for delays at TTN?

In this dataset, April 2026 was the weakest month at TTN, with 68% of departures on time.

How often are flights cancelled at TTN?

3.2% of scheduled departures from TTN were cancelled in this period, compared with a national rate of 1.6%.

Trenton Mercer Airport (TTN): Delays & On-Time Performance

Data through July 2026

Trenton Mercer Airport (TTN) in Trenton, NJ is a middle-of-the-pack performer: 78% of departures are on time, within a few points of the national 78%. It hosts 2 airlines flying 3 departures a day to 11 destinations, with cancellations at 3.2%.

Departures on-time: 78%; left <15 min late
Avg dep delay: 21 min
Arrivals on-time: 74%
Cancelled: 3.2%
Destinations: 11; nonstop
Airlines: 2

Plan your departure from TTN

The choices most likely to improve your odds, based on this airport’s historical record.

Best departure time: Around 8 a.m.; 87% on-time
Best day to fly: Wednesday; 83% on-time
Most reliable airline here: Frontier Airlines; 78% on-time from TTN
Cancellation risk: 3.2%; above the US average

Check routes from TTN ↓Compare nearby airports ↓

Monthly on-time trend

Best time of day to depart from TTN

By day of week

Day	On-time	Avg delay
Monday	77%	19 min
Tuesday	76%	31 min
Wednesdaybest	83%	10 min
Thursday	79%	20 min
Friday	78%	18 min
Saturday	80%	19 min
Sunday	69%	33 min

Next: compare the busiest routes from TTN ↓

Busiest routes from TTN

Route	Flights/12mo	On-time	Avg delay
TTN → MCO (Orlando)	540	80%	20 min
TTN → TPA (Tampa)	233	76%	22 min

Compare airlines departing TTN ↓

Where flights into TTN come from

Route	Flights/12mo	On-time	Avg delay
MCO (Orlando) → TTN	540	72%	21 min
TPA (Tampa) → TTN	234	79%	15 min

What causes delays at TTN

Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing TTN.

Late-arriving aircraft51%
Airline operations21%
National airspace system25%
Weather3%

Alternative airports near Trenton

Other airports within 120 miles, compared on departure reliability.

Airport	Distance	On-time departures	Avg delay
PHL — Philadelphia International Airport	36 mi	77%	20 min
ABE — Lehigh Valley International Airport	42 mi	82%	20 min
EWR — Newark Liberty International Airport	44 mi	79%	18 min
ACY — Atlantic City International Airport	58 mi	81%	17 min
JFK — John F. Kennedy International Airport	60 mi	79%	17 min

Compare the airport-level record first, then check the exact route you plan to book.

Airline performance at TTN

Airline	On-time departures	Avg delay	Flights
Frontier Airlines	78%	20 min	2,220
Allegiant Air	66%	27 min	142

Frequently asked questions

How often are flights delayed at TTN?: 23% of departures from Trenton Mercer Airport left 15+ minutes late between 2024-07 and 2026-07, with an average departure delay of 21 minutes. The national on-time average over the same period was 78%.
What is the best time of day to depart from TTN?: Flights scheduled around 8 a.m. depart on time 87% of the time at TTN, versus 62% around 5 p.m.. Booking before noon is the usual rule of thumb here.
What is the worst month for delays at TTN?: In this dataset, April 2026 was the weakest month at TTN, with 68% of departures on time.
How often are flights cancelled at TTN?: 3.2% of scheduled departures from TTN were cancelled in this period, compared with a national rate of 1.6%.

Popular route pages from this airport

Related guides

Based on 2,362 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.