Best time to fly out of Central Wyoming (RIW)
The early-flight folk wisdom holds up at Central Wyoming: departures in the Before 6am band left on time 91.2% of the time, against 84.3% in the 2–4pm band. 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 | 94 | 92 | 92 | 94 | 90 | 90 | 87 |
| 6–8am | – | – | – | – | – | – | – |
| 8–10am | – | – | – | – | – | – | – |
| 10am–12pm | – | – | – | – | – | – | – |
| 12–2pm | – | – | – | – | – | – | – |
| 2–4pm | 88 | 83 | 86 | 81 | – | – | – |
| 4–6pm | – | – | – | – | – | – | – |
| 6–8pm | – | – | – | – | – | – | – |
| 8–10pm | – | – | – | – | – | – | – |
| 10pm–12am | – | – | – | – | – | – | – |
The steadiest stretch at RIW was Before 6am — 91.2% of departures left on time across 1,080 flights. The weakest was 2–4pm at 84.3%.
The year at RIW
April was the hard month at RIW: 82.4% of departures left on time, across 159 flights. September was the easy one at 93%. 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 | 86.2% | 164 |
| February | 88.4% | 149 |
| March | 87.7% | 164 |
| April | 82.4% | 159 |
| May | 87.7% | 163 |
| June | 84.8% | 180 |
| July | 87.6% | 163 |
| August | 86.6% | 165 |
| September | 93% | 158 |
| October | 85.2% | 163 |
| November | 88.3% | 156 |
| December | 89.5% | 164 |
Airlines at RIW
Every airline with at least 100 departures from RIW, 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 | 87.2% | 173 min | 1.1% | 1,948 |
What delays out of RIW were put down to
Airlines file a reason with every arrival running 15 minutes late or more. Across 299 flights that departed RIW and ran 15 minutes late or more, the delay minutes break down with 51.5% put down to airline operations and 30.8% to late-arriving aircraft.
- Late-arriving aircraft 30.8%
- Airline operations 51.5%
- Air traffic & airport volume 9.1%
- Severe weather 8.6%
- Security 0%
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 RIW
Of 1,947 scheduled arrivals into RIW, 81% reached the gate less than 15 minutes behind schedule. Of the 339 arrivals that ran late, 52.5% 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 RIW
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.
RIW in one number
Central Wyoming (RIW)
Rank 283 of 363 US airports by departures. Steadiest stretch of the day: Before 6am. Hardest month: April.
Questions about RIW
- What is the best time of day to fly out of Central Wyoming?
- Before 6am. Departures in that band left on time 91.2% of the time across 1,080 flights, July 2023 through June 2026 — the best of the ten bands in the day. The 2–4pm band was the weakest at 84.3%.
- What is the worst month to fly out of RIW?
- April: 82.4% of the departures that flew left on time, with 159 scheduled. September was the other end of the year at 93%. Each figure pools three years of that calendar month.
- How often are flights cancelled at RIW?
- 1.1% 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.