Best time to fly out of Chippewa (CIU)
Chippewa 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 | 75 | 84 | 86 | 83 | 86 | 80 | 81 |
| 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 CIU
December was the hard month at CIU: 68% of departures left on time, across 182 flights. November was the easy one at 86.4%. 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 | 75.6% | 184 |
| February | 73% | 170 |
| March | 79.9% | 186 |
| April | 81.7% | 176 |
| May | 82.4% | 206 |
| June | 81.5% | 223 |
| July | 80.1% | 216 |
| August | 85.2% | 217 |
| September | 84.1% | 208 |
| October | 86% | 186 |
| November | 86.4% | 176 |
| December | 68% | 182 |
Airlines at CIU
Every airline with at least 100 departures from CIU, 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 | 80.6% | 131 min | 2.5% | 2,330 |
What delays out of CIU were put down to
Airlines file a reason with every arrival running 15 minutes late or more. Across 477 flights that departed CIU and ran 15 minutes late or more, the delay minutes break down with 68.6% put down to airline operations and 23% to severe weather.
- Late-arriving aircraft 2.5%
- Airline operations 68.6%
- Air traffic & airport volume 5.8%
- Severe weather 23%
- 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 CIU
Of 2,332 scheduled arrivals into CIU, 75.9% reached the gate less than 15 minutes behind schedule. Of the 486 arrivals that ran late, 43.8% 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 CIU
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.
CIU in one number
Chippewa (CIU)
Rank 251 of 363 US airports by departures. Steadiest stretch of the day: 6–8am. Hardest month: December.
Questions about CIU
- What is the worst month to fly out of CIU?
- December: 68% of the departures that flew left on time, with 182 scheduled. November was the other end of the year at 86.4%. Each figure pools three years of that calendar month.
- How often are flights cancelled at CIU?
- 2.5% 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.