Best time to fly out of Stockton (SCK)
Stockton did not fly enough departures in this window to split the day into time bands. Not enough flights to say. A percentage needs at least 100 flights behind it before it is worth printing; anything thinner is noise wearing a decimal point. 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 | – | – | – | – | – | – | – |
| 8–10am | – | – | – | – | – | – | – |
| 10am–12pm | – | – | – | – | – | – | – |
| 12–2pm | – | – | – | – | – | – | – |
| 2–4pm | – | – | – | – | – | – | – |
| 4–6pm | 67 | – | – | – | 62 | – | – |
| 6–8pm | – | – | – | – | – | – | – |
| 8–10pm | – | – | – | – | – | – | – |
| 10pm–12am | – | – | – | – | – | – | – |
Not enough flights to say — fewer than 100 in this window.
The year at SCK
September was the hard month at SCK: 57.9% of departures left on time, across 122 flights. February was the easy one at 78.8%. 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 | 68.3% | 124 |
| February | 78.8% | 105 |
| March | 76.9% | 121 |
| April | 70.3% | 101 |
| May | 73.2% | 127 |
| June | 61.3% | 143 |
| July | 61.7% | 158 |
| August | 64.8% | 129 |
| September | 57.9% | 122 |
| October | 63.2% | 152 |
| November | 62.3% | 132 |
| December | 64.2% | 159 |
Airlines at SCK
Every airline with at least 100 departures from SCK, 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 |
|---|---|---|---|---|
| Allegiant Air | 66.4% | 90 min | 0.7% | 1,573 |
What delays out of SCK were put down to
Airlines file a reason with every arrival running 15 minutes late or more. Across 559 flights that departed SCK and ran 15 minutes late or more, the delay minutes break down with 42.7% put down to late-arriving aircraft and 29% to airline operations.
- Late-arriving aircraft 42.7%
- Airline operations 29%
- Air traffic & airport volume 14%
- Severe weather 13.1%
- Security 1.1%
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 SCK
Of 1,573 scheduled arrivals into SCK, 77.6% reached the gate less than 15 minutes behind schedule. Of the 335 arrivals that ran late, 56.1% 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 SCK
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.
SCK in one number
Stockton (SCK)
Rank 305 of 363 US airports by departures. Steadiest stretch of the day: 4–6pm. Hardest month: September.
Questions about SCK
- What is the worst month to fly out of SCK?
- September: 57.9% of the departures that flew left on time, with 122 scheduled. February was the other end of the year at 78.8%. Each figure pools three years of that calendar month.
- How often are flights cancelled at SCK?
- 0.7% 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.