Air Cargo Carriers (SNC) on-time performance, September 2026
1,010 scheduled Air Cargo Carriers departures in US airspace in September 2026, 68.8% of them on time. Measured from FAA departure data, updated every morning.
On time, day by day
Share of Air Cargo Carriers departures within 15 minutes of schedule, by day. Light bars show each day's departures for context. Worst day: Wednesday 23 September at 55.0%. Best: Sunday 6 September at 91.7%.
Airports, ranked by on-time share
Airports with at least 30 Air Cargo Carriers departures in the month.
| Airport | Departures | On time | 45+ min late | Avg delay (min) |
|---|---|---|---|---|
| STX St. Criox Island | 133 | 82.0% | 10.5% | -5.6 |
| SJU San Juan | 367 | 63.5% | 18.0% | 13.6 |
| STT St. Thomas | 170 | 58.8% | 20.0% | 11.5 |
| SDF Louisville | 81 | 38.3% | 32.1% | 38.1 |
Least punctual routes
Routes with at least 20 Air Cargo Carriers departures, lowest on-time share first.
| Route | Flights | On time | Avg delay |
|---|---|---|---|
| SJU to SKB San Juan to Basse Terre | 21 | 4.8% | 43.0 |
| SDF to BKW Louisville to Beckley | 22 | 18.2% | 57.5 |
| STT to SJU St. Thomas to San Juan | 166 | 58.4% | 12.0 |
| SJU to STX San Juan to St. Criox Island | 132 | 63.6% | 11.8 |
| SJU to EIS San Juan to Roadtown/Beef Island | 22 | 68.2% | 8.5 |
| SJU to STT San Juan to St. Thomas | 165 | 73.3% | 9.5 |
| STX to SJU St. Criox Island to San Juan | 124 | 83.9% | -7.6 |
| SDF to TVC Louisville to Traverse City | 21 | 85.7% | 13.7 |
| CAE to MYR Colombia to Myrtle Beach | 21 | 85.7% | 1.1 |
| SXM to SJU Philipsburg to San Juan | 20 | 90.0% | -21.2 |
Busiest routes
The ten routes Air Cargo Carriers flew most this month.
| Route | Flights | On time | Avg delay |
|---|---|---|---|
| STT to SJU St. Thomas to San Juan | 166 | 58.4% | 12.0 |
| SJU to STT San Juan to St. Thomas | 165 | 73.3% | 9.5 |
| SJU to STX San Juan to St. Criox Island | 132 | 63.6% | 11.8 |
| STX to SJU St. Criox Island to San Juan | 124 | 83.9% | -7.6 |
| CRW to SDF Charleston to Louisville | 22 | 90.9% | -1.2 |
| SJU to EIS San Juan to Roadtown/Beef Island | 22 | 68.2% | 8.5 |
| SDF to BKW Louisville to Beckley | 22 | 18.2% | 57.5 |
| SJU to SKB San Juan to Basse Terre | 21 | 4.8% | 43.0 |
| MSN to SDF Madison to Louisville | 21 | 90.5% | 9.2 |
| MKE to MSN Milwaukee to Madison | 21 | 100.0% | -24.7 |
Other months for Air Cargo Carriers
Airport pages for September 2026
How we measure
On time means the aircraft took off within 15 minutes of its scheduled departure, after subtracting the departure airport's normal taxi time (FAA SWIM reports wheels-off, not push-back, so the median taxi time of the last 30 days is taken off every flight first). Average delay is the mean of that taxi-adjusted delay over all departures; early departures count as negative minutes, so an operator that routinely leaves early can show a negative average. 45+ min late is the share of departures that left 45 minutes or more behind schedule, the point at which most connections are at risk.
Scope: scheduled airlines only, the same set as the monthly State of the Sky report (operators with published routes; private, fractional and charter operators are left out), so the two publications give the same numbers for the same month. Departures are counted by scheduled day (UTC). Each day's flights are rolled up overnight and published the next morning; the newest day keeps filling in for a day or two and is only shown once it is substantially complete. Figures can differ by a few tenths of a point from the State of the Sky report for the same month: that report is frozen on the 2nd of the following month, while these pages are rebuilt from the live rollup, which recomputes each airport's taxi baseline nightly and re-rolls the last week of the month as late departure times arrive (September 2026 at SFO: 16,398 departures in both, 69.2% on time here against 69.5% in the report).
Source: FAA System Wide Information Management (SWIM) flight plans and departure times, processed by PlaneTrack. Free to quote with credit to PlaneTrack (CC BY 4.0).