Best time to fly out of Trenton Mercer (TTN)
The early-flight folk wisdom holds up at Trenton Mercer: departures in the 8–10am band left on time 86.7% of the time, against 70.2% in the 6–8pm band. These are historical odds, not forecasts. The records say what happened on this schedule over three years; they know nothing about tomorrow’s thunderstorm.
Data through June 2026 · Bureau of Transportation Statistics
On-time rate by hour and day
On this page, “on time” means a departure that pushed back less than 15 minutes behind its scheduled time — the Bureau of Transportation Statistics definition, and the one airlines are held to.
| Departure time | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| Before 6am | – | – | – | – | – | – | – |
| 6–8am | 83 | – | – | 88 | 88 | 87 | 84 |
| 8–10am | – | – | – | – | – | 87 | – |
| 10am–12pm | 80 | – | – | 78 | 87 | – | 72 |
| 12–2pm | – | – | – | – | – | – | – |
| 2–4pm | – | – | – | – | – | – | – |
| 4–6pm | – | – | – | – | – | – | – |
| 6–8pm | 67 | – | – | – | 74 | – | – |
| 8–10pm | – | – | – | – | – | – | – |
| 10pm–12am | – | – | – | – | – | – | – |
The steadiest stretch at TTN was 8–10am — 86.7% of departures left on time across 120 flights. The weakest was 6–8pm at 70.2%. 6–8am departures from TTN left on time 85.9% of the time across 692 flights; 6–8pm departures, 70.2% across 205. That is a gap of 15.7 points, and it is the whole case for the early flight.
The year at TTN
March was the hard month at TTN: 67.3% of departures left on time, across 460 flights. October was the easy one at 85.1%. Each month pools three years of that month, so a single bad week does not decide it.
| Month | Share departures that left on time | Flights |
|---|---|---|
| January | 80.9% | 384 |
| February | 78.2% | 409 |
| March | 67.3% | 460 |
| April | 71.9% | 489 |
| May | 73% | 358 |
| June | 75.2% | 343 |
| July | 69% | 432 |
| August | 73.1% | 433 |
| September | 81.7% | 311 |
| October | 85.1% | 312 |
| November | 83.7% | 356 |
| December | 74.4% | 411 |
Airlines at TTN
Every airline with at least 100 departures from TTN, busiest first. These are that airline’s departures from this airport only — its record across the country sits on its own page.
| Airline | Left on time | Typical delay | Cancelled | Departures |
|---|---|---|---|---|
| Frontier Airlines | 75.8% | 86 min | 3.2% | 4,583 |
| Allegiant Air | 66.4% | 83 min | 4.3% | 115 |
What delays out of TTN were put down to
Airlines file a reason with every arrival running 15 minutes late or more. Across 1,084 flights that departed TTN and ran 15 minutes late or more, the delay minutes break down with 58.7% put down to late-arriving aircraft and 19.8% to airline operations.
- Late-arriving aircraft 58.7%
- Airline operations 19.8%
- Air traffic & airport volume 19.8%
- Severe weather 1.7%
- Security 0%
Late-arriving aircraft is the knock-on category: the plane came in late, so it went out late again. It is why a 7am problem in Newark is still a problem in Denver at dinnertime, and why it is usually the biggest slice on the bar.
If you are connecting through TTN
Of 4,699 scheduled arrivals into TTN, 70.9% reached the gate less than 15 minutes behind schedule. Of the 1,188 arrivals that ran late, 45.4% were no more than 45 minutes behind — which is the difference between a tight connection and a new boarding pass.
Work out a specific layover — pick the airport and the minutes you have, and the tool reads the same arrival records back as a share.
Busiest routes out of TTN
Ranked by flights, with the share that arrived on time at the far end. Where a route carries enough flights for a page of its own the chip goes there; otherwise it goes to the destination airport.
- MCO 78.1% on time · 1,897 flights
- TPA 76.2% on time · 951 flights
- ATL 71.2% on time · 481 flights
- PBI 77.8% on time · 423 flights
- RSW 77.1% on time · 340 flights
- FLL 69.4% on time · 228 flights
- RDU 76.2% on time · 139 flights
- CLT 68.9% on time · 130 flights
- PGD Not enough flights to say · 39 flights
- PIE Not enough flights to say · 38 flights
TTN in one number
Trenton Mercer (TTN)
Rank 213 of 363 US airports by departures. Steadiest stretch of the day: 8–10am. Hardest month: March.
Questions about TTN
- What is the best time of day to fly out of Trenton Mercer?
- 8–10am. Departures in that band left on time 86.7% of the time across 120 flights, July 2023 through June 2026 — the best of the ten bands in the day. The 6–8pm band was the weakest at 70.2%.
- Is the early flight out of TTN really more reliable?
- 6–8am departures from TTN left on time 85.9% of the time across 692 flights; 6–8pm departures, 70.2% across 205. That is a gap of 15.7 points, and it is the whole case for the early flight.
- What is the worst month to fly out of TTN?
- March: 67.3% of the departures that flew left on time, with 460 scheduled. October was the other end of the year at 85.1%. Each figure pools three years of that calendar month.
- Which airline is most on time at TTN?
- Frontier Airlines — 75.8% of its 4,583 departures from TTN left on time. Allegiant Air sat at the other end at 66.4% over 115 flights. Only airlines with at least 100 departures here are ranked.
- How often are flights cancelled at TTN?
- 3.3% of scheduled departures were cancelled over July 2023 through June 2026. Cancellations are counted against everything scheduled, not against everything that flew — a rate that looks small still adds up to real people in a rebooking line.