Best time to fly out of Southwest Wyoming (RKS)
The early-flight folk wisdom holds up at Southwest Wyoming: departures in the Before 6am band left on time 92.2% of the time, against 77.2% 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 | 92 | 90 | 92 | 94 | 91 | 94 | 94 |
| 6–8am | – | – | – | – | – | – | – |
| 8–10am | – | – | – | – | – | – | – |
| 10am–12pm | – | – | – | – | – | – | – |
| 12–2pm | – | – | – | – | – | – | – |
| 2–4pm | – | – | – | 77 | – | – | – |
| 4–6pm | – | – | – | – | – | – | – |
| 6–8pm | – | – | – | – | – | – | – |
| 8–10pm | – | – | – | – | – | – | – |
| 10pm–12am | – | – | – | – | – | – | – |
The steadiest stretch at RKS was Before 6am — 92.2% of departures left on time across 1,084 flights. The weakest was 2–4pm at 77.2%.
The year at RKS
April was the hard month at RKS: 82.4% of departures left on time, across 159 flights. September was the easy one at 90.5%. 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 | 83.3% | 163 |
| February | 84.5% | 149 |
| March | 86.2% | 164 |
| April | 82.4% | 159 |
| May | 86.5% | 164 |
| June | 88.8% | 180 |
| July | 89.2% | 163 |
| August | 86.5% | 165 |
| September | 90.5% | 158 |
| October | 86.4% | 163 |
| November | 90.3% | 156 |
| December | 84.8% | 164 |
Airlines at RKS
Every airline with at least 100 departures from RKS, 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 | 86.6% | 181 min | 1% | 1,948 |
What delays out of RKS were put down to
Airlines file a reason with every arrival running 15 minutes late or more. Across 296 flights that departed RKS and ran 15 minutes late or more, the delay minutes break down with 56.9% put down to airline operations and 24.5% to late-arriving aircraft.
- Late-arriving aircraft 24.5%
- Airline operations 56.9%
- Air traffic & airport volume 11.7%
- Severe weather 7%
- 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 RKS
Of 1,948 scheduled arrivals into RKS, 78.5% reached the gate less than 15 minutes behind schedule. Of the 386 arrivals that ran late, 49.2% 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 RKS
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.
- DEN 84.6% on time · 1,948 flights
RKS in one number
Southwest Wyoming (RKS)
Rank 284 of 363 US airports by departures. Steadiest stretch of the day: Before 6am. Hardest month: April.
Questions about RKS
- What is the best time of day to fly out of Southwest Wyoming?
- Before 6am. Departures in that band left on time 92.2% of the time across 1,084 flights, July 2023 through June 2026 — the best of the ten bands in the day. The 2–4pm band was the weakest at 77.2%.
- What is the worst month to fly out of RKS?
- April: 82.4% of the departures that flew left on time, with 159 scheduled. September was the other end of the year at 90.5%. Each figure pools three years of that calendar month.
- How often are flights cancelled at RKS?
- 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.