How reliable is Trenton Mercer Airport?
Flights from TTN departed within 15 minutes of schedule in 75% of 11,013 flights in official BTS history — and weather is calmest in Nov. Here’s the full picture before you book.
Reliability score
on-time, cancellations & delays
Weather favorability
year-round climate
Origin-airport operations
What the departure punctuality at TTN looks like
On-time departures
across 11,013 flights
Source: BTS Airport Operations · data through 2026-08-08. Role-specific BTS departure history; advisory context, not a guarantee for any flight.
Weather by month
When the weather works for you at Trenton
A calm-weather score (0–100) for each month from decades of airport observations — how often conditions disrupt flying, not temperature. Higher is calmer.
Calmest month
Calmest flying weather of the year · 92/100 favorability
Roughest month
Most disruptive — low visibility & fog, snow · 80/100 favorability
The read on TTN
What the numbers say about flying through Trenton Mercer Airport
Across official performance history, flights from Trenton left within 15 minutes of schedule about 75% of the time over 11,013 flights. That's a respectable but unspectacular operational record. Pair it with an elevated cancellation rate of 3.6% — worth weighing alongside the on-time figure. When a departure does run late, the typical delay is around 16 minutes.
On weather, Trenton is an unusually calm-weather airport year-round. November is the calmest stretch for flying, scoring 92 out of 100 for favorable conditions, while February is the most disruptive at 80, driven mainly by low visibility & fog and snow. The year is relatively steady, so no single month stands out as one to avoid on weather alone.
None of this guarantees your specific flight — it’s the backdrop. To turn it into a booking, score real flights to Trenton, read how we weigh it all in how the PlaneSane Score works, and brush up with how to pick a reliable flight and avoiding weather delays.
Common questions about TTN
- How reliable is Trenton Mercer Airport (TTN)?
- Flights from Trenton left within 15 minutes of schedule roughly 75% of the time across 11,013 flights of official history — a respectable but unspectacular operational record. The cancellation rate runs about 3.6%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from TTN for good weather?
- November has the calmest flying weather at Trenton Mercer Airport. February is the most disruptive, mainly from low visibility & fog and snow.
Reliability guides
Planning a trip through Trenton?
Score real flights to and from TTN on reliability, weather, and connection safety — not just price.