Flight number record
OO 4727
SkyWest Airlines · Denver to Oklahoma City
- Route
- DEN → OKC
- Departs
- 20:42
- Flights
- 333
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4727, 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 4727 sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 333 flights, with a median arrival 6 minutes early.
Key figures
On time
75.5%
Arrivals under 15 minutes late, of 326 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
1.80%
National rate is 1.89%
1 hour+ late
9.2%
National rate is 8.3%
These figures cover 333 flights between September 2025 and August 2026. Beyond the headline rate, 9.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 4727 flies
OO 4727 flies DEN to OKC without a single fixed slot. Its most common scheduled departure was 20:42, used on 58 of 333 flights, with 20:30 (52 flights) and 20:28 (46 flights) next.
- Departs 20:4258 flights17.4%
- Departs 20:3052 flights15.6%
- Departs 20:2846 flights13.8%
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 20:42 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 4727 runs 5 points better at 75.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 4727 next to DEN to OKC
Every carrier on DEN to OKC combined arrived on time 78.2% of the time across 3,122 flights, so OO 4727 is 3 points behind it. SkyWest flew 1,134 flights on the same city pair under all its flight numbers, including this one, and those ran 84.8% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4727thin sample | 333 | 75.5% | 65 min | 1.80% | B |
| All SkyWest Airlines on DEN–OKC | 1,134 | 84.8% | 67 min | 0.71% | B+ |
| All carriers on DEN–OKC | 3,122 | 78.2% | 62 min | 0.67% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4727 quarter by quarter
OO 4727 did not run the same all year. Its best quarter was Jul–Sep 2025 at 86.7% on time and its weakest Jul–Sep 2026 at 55.8%, a swing of 31 points on roughly 67 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 flights86.7%
- Oct–Dec 202591 flights73.6%
- Jan–Mar 202690 flights77.3%
- Apr–Jun 202677 flights82.4%
- Jul–Sep 202645 flights55.8%
Scale runs 45% to 90%.
By weekday, OO 4727 did best on Friday at 87.5% on time and worst on Sunday at 66.7%. Each day rests on about 48 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4727 runs when it is late
OO 4727 often beats the schedule: 114 of 326 completed flights, 35%, arrived 15 minutes or more early. The 80 late arrivals split 26 under half an hour, 24 between 30 and 60 minutes, and 30 an hour or more.
- 15+ min early114 flights35.0%
- Within 15 min132 flights40.5%
- 15–29 min late26 flights8.0%
- 30–59 min late24 flights7.4%
- 1–2 hours late24 flights7.4%
- 2+ hours late6 flights1.8%
Scale runs 0% to 100%.
Share of 326 completed flights by arrival against schedule.
18 of 86 late departures made up the time and arrived on time, 21% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for OO 4727
The latest arrival of the period was on 6 March 2026, 12 hours 48 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 March 2026 | 12 hours 48 minutes | National Airspace System |
| 23 August 2026 | 2 hours 49 minutes | Carrier |
| 3 August 2026 | 2 hours 45 minutes | Carrier |
| 19 December 2025 | 2 hours 32 minutes | Extreme weather |
| 8 June 2026 | 2 hours 27 minutes | Carrier |
Delay causes
Why OO 4727 runs late
Carrier accounts for 45% of the 5,220 delay minutes carriers reported here, and the remaining four split what is left.
- 45%Carrier
- 30%National Airspace System
- 16%Late-arriving aircraft
- 10%Extreme weather
The largest share of delay minutes, 45%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,335 of the 5,220 delay minutes reported here. The split is drawn from 5,220 delay minutes reported on OO 4727.
Cancellations sit at 1.80% against a national 1.89%, which is ordinary. Diversions add another 0.30%.
Connections and routes
What a delay on this flight costs
9.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The same number turns up on three other city pairs in the data, including ORD to TVC (1), DEN to XNA (1) and SFO to MSP (1), but none flew often enough under OO 4727 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to OKC only.
One caution: this is a thin sample. 333 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 4727
For a booking, read OO 4727 as 75.5% on time with 1.80% cancelled over 333 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to OKC, every carrier and departure
- OKC to DEN, the return direction
- SkyWest Airlines 5324 on the same route88.6%
- SkyWest Airlines 5808 on the same route85.1%
- 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
- How often a connection fails at the major US hubs
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.