Flight number record
OO 5036
SkyWest Airlines · Cheyenne to Denver
- Route
- CYS → DEN
- Departs
- 06:00
- Flights
- 317
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5036, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
OO 5036 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 317 flights, with a median arrival 12 minutes early.
Set against the rest of the country, OO 5036's record is 9 points better than the US average of 77.3%. That gap is worth roughly 90 fewer late arrivals for every thousand flights.
Key figures
On time
86.3%
Arrivals under 15 minutes late, of 314 completed flights
Avg delay
115 min
Across delayed arrivals only, not all flights
Cancelled
0.95%
National rate is 1.89%
1 hour+ late
6.4%
National rate is 8.3%
These figures cover 317 flights between September 2025 and August 2026. The median arrival is 12 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When OO 5036 flies
OO 5036 is scheduled to leave Cheyenne (CYS) at 06:00 local time and reach Denver (DEN) at 07:00. That slot held for 281 of the 317 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 06:00281 flights88.6%
- Departs 05:4535 flights11.0%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 5036 runs 3 points worse at 86.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
OO 5036 next to CYS to DEN
Every carrier on CYS to DEN combined arrived on time 85.9% of the time across 730 flights, so OO 5036 is about level with it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5036thin sample | 317 | 86.3% | 115 min | 0.95% | A+ |
| All SkyWest Airlines on CYS–DEN | 730 | 85.9% | 89 min | 0.96% | A+ |
| All carriers on CYS–DEN | 730 | 85.9% | 89 min | 0.96% | A+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5036 quarter by quarter
OO 5036 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jan–Mar 2026 at 82.8%, a swing of 14 points on roughly 79 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights96.7%
- Oct–Dec 202592 flights83.7%
- Jan–Mar 202689 flights82.8%
- Apr–Jun 202685 flights86.9%
- Jul–Sep 202621 flights—
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5036 did best on Tuesday at 93.5% on time and worst on Friday at 77.3%. Each day rests on about 45 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5036 runs when it is late
OO 5036 often beats the schedule: 139 of 314 completed flights, 44%, arrived 15 minutes or more early. The 43 late arrivals split 13 under half an hour, 10 between 30 and 60 minutes, and 20 an hour or more.
- 15+ min early139 flights44.3%
- Within 15 min132 flights42.0%
- 15–29 min late13 flights4.1%
- 30–59 min late10 flights3.2%
- 1–2 hours late3 flights1.0%
- 2+ hours late17 flights5.4%
Scale runs 0% to 100%.
Share of 314 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 33 departures that left 15 minutes late or more, only 3 made it up before arrival. 13 flights left on time and still arrived late.
The worst days
Worst days for OO 5036
The latest arrival of the period was on 6 March 2026, 7 hours 57 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across March, October, April and June, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 March 2026 | 7 hours 57 minutes | Extreme weather |
| 16 October 2025 | 6 hours 1 minute | National Airspace System |
| 26 April 2026 | 5 hours 25 minutes | Carrier |
| 4 June 2026 | 4 hours 48 minutes | Carrier |
| 17 April 2026 | 4 hours 11 minutes | Late-arriving aircraft |
Delay causes
Why OO 5036 runs late
Carrier accounts for 49% of the 4,933 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Carrier
- 19%Late-arriving aircraft
- 18%National Airspace System
- 14%Extreme weather
Extreme weather accounts for 14% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.3 times the usual weather exposure. The split is drawn from 4,933 delay minutes reported on OO 5036.
Cancellations sit at 0.95% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
6.4% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, which a normal layover absorbs.
The same number turns up on two other city pairs in the data, including ORD to EAU (34) and DEN to CYS (21), but none flew often enough under OO 5036 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to CYS to DEN only.
One caution: this is a thin sample. 317 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking OO 5036
For a booking, OO 5036 has one of the better records a US domestic flight can show: 86.3% on time and 0.95% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- CYS to DEN, every carrier and departure
- DEN to CYS, the return direction
- SkyWest Airlines 5024 on the same route84.9%
- Denver International (DEN) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.