Flight number record
OO 4751
SkyWest Airlines · Oklahoma City to Denver
- Route
- OKC → DEN
- Departs
- 06:00
- Flights
- 361
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4751, 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 4751 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 18 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 2.3 hours. That rests on 361 flights, with a median arrival 17 minutes early.
Set against the rest of the country, OO 4751's record is 18 points better than the US average of 77.3%. That gap is worth roughly 177 fewer late arrivals for every thousand flights.
Key figures
On time
95.0%
Arrivals under 15 minutes late, of 357 completed flights
Avg delay
138 min
Across delayed arrivals only, not all flights
Cancelled
1.11%
National rate is 1.89%
1 hour+ late
2.0%
National rate is 8.3%
These figures cover 361 flights between September 2025 and August 2026. The median arrival is 17 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 4751 flies
OO 4751 flies OKC to DEN without a single fixed slot. Its most common scheduled departure was 06:00, used on 181 of 361 flights, with 06:05 (180 flights) next.
- Departs 06:00181 flights50.1%
- Departs 06:05180 flights49.9%
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 4751 runs 6 points better at 95.0%. 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 4751 next to OKC to DEN
Every carrier on OKC to DEN combined arrived on time 80.5% of the time across 3,125 flights, so OO 4751 is 15 points ahead of it. SkyWest flew 1,140 flights on the same city pair under all its flight numbers, including this one, and those ran 85.1% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 16 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4751thin sample | 361 | 95.0% | 138 min | 1.11% | A |
| All SkyWest Airlines on OKC–DEN | 1,140 | 85.1% | 81 min | 1.14% | A |
| All carriers on OKC–DEN | 3,125 | 80.5% | 63 min | 0.96% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4751 quarter by quarter
Quarter by quarter OO 4751 held fairly steady: 100.0% in Jul–Sep 2025, 96.7% in Oct–Dec 2025, 92.0% in Jan–Mar 2026, 95.5% in Apr–Jun 2026 and 93.3% in Jul–Sep 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights100.0%
- Oct–Dec 202591 flights96.7%
- Jan–Mar 202689 flights92.0%
- Apr–Jun 202690 flights95.5%
- Jul–Sep 202661 flights93.3%
Scale runs 85% to 100%.
By weekday, OO 4751 ranged from 91.8% on Sunday to 98.0% on Friday. With about 52 flights behind each day, a spread of 6 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 4751 runs when it is late
OO 4751 often beats the schedule: 204 of 357 completed flights, 57%, arrived 15 minutes or more early. The 18 late arrivals split 8 under half an hour, 3 between 30 and 60 minutes, and 7 an hour or more.
- 15+ min early204 flights57.1%
- Within 15 min135 flights37.8%
- 15–29 min late8 flights2.2%
- 30–59 min late3 flights0.8%
- 1–2 hours late1 flights0.3%
- 2+ hours late6 flights1.7%
Scale runs 0% to 100%.
Share of 357 completed flights by arrival against schedule.
Only 17 of 357 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for OO 4751
The latest arrival of the period was on 15 August 2026, 11 hours 22 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 August 2026 | 11 hours 22 minutes | Carrier |
| 15 March 2026 | 8 hours 28 minutes | Carrier |
| 26 May 2026 | 5 hours 47 minutes | Carrier |
| 4 December 2025 | 4 hours 28 minutes | Carrier |
| 28 February 2026 | 3 hours 27 minutes | Carrier |
Delay causes
Why OO 4751 runs late
Carrier accounts for 88% of the 2,481 delay minutes carriers reported here, and the remaining four split what is left.
- 88%Carrier
- 8%Extreme weather
- 3%National Airspace System
- 1%Late-arriving aircraft
The largest share of delay minutes, 88%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,184 of the 2,481 delay minutes reported here. The split is drawn from 2,481 delay minutes reported on OO 4751.
Cancellations sit at 1.11% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.0% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The same number turns up on four other city pairs in the data, including ORD to RDU (1), FAR to DEN (1) and DEN to RAP (1), but none flew often enough under OO 4751 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to OKC to DEN only.
One caution: this is a thin sample. 361 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 4751
For a booking, OO 4751 has one of the better records a US domestic flight can show: 95.0% on time and 1.11% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- OKC to DEN, every carrier and departure
- DEN to OKC, the return direction
- SkyWest Airlines 5490 on the same route85.1%
- SkyWest Airlines 4768 on the same route74.5%
- 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.