Best time to fly out of Delta (ESC)
Delta 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 | – | – | – | – | – | – | – |
| 6–8pm | – | – | – | – | – | – | – |
| 8–10pm | – | – | – | – | – | – | – |
| 10pm–12am | – | – | – | – | – | – | – |
Not enough flights to say — fewer than 100 in this window.
The year at ESC
December was the hard month at ESC: 81.8% of departures left on time, across 158 flights. May was the easy one at 93.1%. 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 | 82.5% | 160 |
| February | 92.3% | 146 |
| March | 84.9% | 159 |
| April | 91.4% | 154 |
| May | 93.1% | 160 |
| June | 83.2% | 155 |
| July | 85.5% | 159 |
| August | 89.8% | 167 |
| September | 89.5% | 171 |
| October | 91.9% | 172 |
| November | 84.9% | 162 |
| December | 81.8% | 158 |
Airlines at ESC
Every airline with at least 100 departures from ESC, 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 |
|---|---|---|---|---|
| SkyWest Airlines | 87.6% | 151 min | 3% | 1,923 |
What delays out of ESC were put down to
Airlines file a reason with every arrival running 15 minutes late or more. Across 282 flights that departed ESC and ran 15 minutes late or more, the delay minutes break down with 67.2% put down to airline operations and 27.2% to severe weather.
- Late-arriving aircraft 0%
- Airline operations 67.2%
- Air traffic & airport volume 5.6%
- Severe weather 27.2%
- Security 0.1%
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 ESC
Of 1,924 scheduled arrivals into ESC, 82.8% reached the gate less than 15 minutes behind schedule. Of the 267 arrivals that ran late, 43.4% 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 ESC
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.
ESC in one number
Delta (ESC)
Rank 286 of 363 US airports by departures. Steadiest stretch of the day: —. Hardest month: December.
Questions about ESC
- What is the worst month to fly out of ESC?
- December: 81.8% of the departures that flew left on time, with 158 scheduled. May was the other end of the year at 93.1%. Each figure pools three years of that calendar month.
- How often are flights cancelled at ESC?
- 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.