Airports › New Jersey
Airport · 12 months to July 2026
Trenton Mercer: delays and on-time record
Trenton, New Jersey
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. Data through July 2026; this is a monthly history, not live airport status.
Reporting carriers scheduled 1,012 domestic departures from Trenton Mercer (TTN), Trenton, in the 12 months to July 2026: about 3 a day to 9 destinations.
74.6% of those flights left the gate less than 15 minutes late, 1.5 points below the national departure figure of 76.1%. Flights arriving at TTN were on time 73.4% of the time, 2.6 points below the national arrival figure of 76.0%.
3.3% of scheduled departures were cancelled (national: 1.8%), and the average departure delay, counting early and on-time departures as zero, was 23.0 min.
Frontier Airlines is the largest reporting carrier at TTN with 86% of departures. Among carriers with at least 120 departures, Frontier Airlines had the highest on-time arrival share for its TTN departures (76.0%) and Allegiant Air the lowest (62.7%).
On-time departures are down 1.3 points on the previous 12 months (75.9%).
Of the delay minutes that carriers assigned to a BTS cause category for flights leaving TTN, late-arriving aircraft 45%, national aviation system 29% and air carrier 23%.
- On time 74.1%
- Arrived 15+ minutes late 22.4%
- Cancelled 3.3%
- Diverted 0.2%
As origin and as destination, against the nation
| Measure | Departures from TTN | Arrivals at TTN | All reported flights | TTN departures, previous 12 months |
|---|---|---|---|---|
| Departed on time (less than 15 min late) | 74.6% | 72.7% | 76.1% | 75.9% |
| Arrived on time | 74.1% | 73.4% | 76.0% | 76.1% |
| Cancelled | 3.3% | 3.0% | 1.8% | 3.1% |
| Diverted | 0.2% | 0.6% | 0.3% | 0.6% |
| Average departure delay (late minutes only) | 23.0 min | 18.1 min | 17.4 min | 19.0 min |
| Arrival delay minutes per 100 flights | 2,326 | 1,752 | 1,684 | 1,811 |
| Scheduled flights | 1,012 | 1,012 | 7,043,858 | 1,208 |
12 months to July 2026. The first column follows flights that left TTN; the second follows flights that landed there. Year on year, on-time departures moved −1.3 pts.
Airlines at TTN
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| F9 Frontier Airlines | 870 | 86% | 76.0% | 10.5 min | 3.2% |
| G4 Allegiant Air | 142 | 14% | 62.7% | 24.8 min | 3.5% |
Departures from TTN by reporting carrier, ordered by flights; on time means the flight reached its destination less than 15 minutes late. Green is at or above the airport's overall share of 74.1%. Carriers fly different routes at different hours, so the rows are not a like-for-like test.
Busiest routes from TTN
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| TTN–MCO | Trenton to Orlando | 540 | 79.4% | 6.0 min | 3.7% |
| TTN–TPA | Trenton to Tampa | 233 | 69.1% | 19.3 min | 2.1% |
| TTN–FLL | Trenton to Fort Lauderdale | 60 | 53.3% | 60.2 min | 3.3% |
| TTN–PGD | Trenton to Punta Gorda | 48 | 60.4% | 23.2 min | 4.2% |
| TTN–PIE | Trenton to St. Petersburg | 47 | 72.3% | 2.3 min | 4.3% |
| TTN–ATL | Trenton to Atlanta | 39 | 82.1% | -3.8 min | 2.6% |
| TTN–MYR | Trenton to Myrtle Beach | 25 | 80.0% | -8.5 min | 4.0% |
| TTN–PBI | Trenton to West Palm Beach/Palm Beach | 13 | 76.9% | 5.2 min | 0.0% |
| TTN–RSW | Trenton to Fort Myers | 7 | 42.9% | 44.7 min | 0.0% |
Routes with at least 10 flights a month have their own page.
Month by month
By scheduled departure hour
Among hours with at least 30 departures, 12 pm to 1 pm had the highest on-time share (85.5% of 69 flights) and 9 pm to 10 pm the lowest (60.0% of 45).
Delay causes
Cancellations by reported reason (33 in the period): air carrier 42%, weather 58%, national aviation system 0%, security 0%.
Checkpoint volumes
TSA publishes daily checkpoint passenger counts for the country as a whole, not for TTN on its own. The national series through September 2026 is on the checkpoint volumes page.
Questions and answers
How often do flights leave TTN on time?
74.6% of the 1,012 scheduled domestic departures in the 12 months to July 2026 left less than 15 minutes late; the national figure was 76.1%. 3.3% were cancelled.
How often do flights arrive at TTN on time?
73.4% of 1,012 scheduled arrivals were on time by the BTS definition, against 76.0% nationally.
Which airline has the highest on-time share at TTN?
Counting departures from TTN and whether they reached their destination on time, Frontier Airlines had the highest share (76.0% of 870 flights), then Allegiant Air (62.7%). Carriers fly different routes at different hours, so the figures are not a like-for-like test.
What causes delays at TTN?
For departures from TTN that reached their destination 15 or more minutes late, carriers attributed the delay minutes as follows: late-arriving aircraft 45%, national aviation system 29%, air carrier 23%, extreme weather 3%, security 0%.
What time of day has the highest on-time share at TTN?
Departures scheduled from 12 pm to 1 pm local time left on time 85.5% of the time, the highest of any hour with enough flights to compare; 9 pm to 10 pm was lowest at 60.0%.
Is it getting better?
On-time departures for the 12 months to July 2026 were 74.6%, down 1.3 points on the previous 12 months (75.9%). The monthly chart shows each of the last 36 months, and each month has its own page.
Does this page show today's delays at TTN?
No. BTS publishes on-time records about two months after the month ends, so this page is a monthly history through July 2026. For live conditions use the FAA airport status service or your airline.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026; airport name from the BTS airport lookup table. US government works in the public domain. Domestic scheduled flights by reporting carriers only: international flights, charters and smaller carriers are not in the source. Totals and averages only; no individual flight or aircraft is identified. See the methodology; report processing errors through corrections.