Flight number record
OO 5823
SkyWest Airlines · Oklahoma City to Chicago
- Route
- OKC → ORD
- Departs
- 08:45
- Flights
- 343
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5823, 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 5823 lands a B, about a point better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 343 flights, with a median arrival 9 minutes early.
Key figures
On time
78.2%
Arrivals under 15 minutes late, of 335 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
2.04%
National rate is 1.89%
1 hour+ late
8.1%
National rate is 8.3%
These figures cover 343 flights between September 2025 and August 2026. Beyond the headline rate, 8.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5823 flies
OO 5823 flies OKC to ORD without a single fixed slot. Its most common scheduled departure was 08:45, used on 82 of 343 flights, with 09:43 (45 flights) and 10:00 (36 flights) next.
- Departs 08:4582 flights23.9%
- Departs 09:4345 flights13.1%
- Departs 10:0036 flights10.5%
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 08:45 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 5823 runs 6 points worse at 78.2%. 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 5823 next to OKC to ORD
Every carrier on OKC to ORD combined arrived on time 75.2% of the time across 2,622 flights, so OO 5823 is 3 points ahead of it. SkyWest flew 2,340 flights on the same city pair under all its flight numbers, including this one, and those ran 73.8% on time. Across its whole network SkyWest Airlines managed 78.7%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5823thin sample | 343 | 78.2% | 74 min | 2.04% | B |
| All SkyWest Airlines on OKC–ORD | 2,340 | 73.8% | 95 min | 3.21% | C− |
| All carriers on OKC–ORD | 2,622 | 75.2% | 94 min | 3.05% | B− |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5823 quarter by quarter
Quarter by quarter OO 5823 held fairly steady: 73.3% in Jul–Sep 2025, 80.0% in Oct–Dec 2025, 81.5% in Jan–Mar 2026, 77.8% in Apr–Jun 2026 and 74.6% 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 flights73.3%
- Oct–Dec 202577 flights80.0%
- Jan–Mar 202683 flights81.5%
- Apr–Jun 202691 flights77.8%
- Jul–Sep 202662 flights74.6%
Scale runs 65% to 85%.
By weekday, OO 5823 did best on Thursday at 93.6% on time and worst on Sunday at 65.2%. Each day rests on about 49 flights, so a gap of 28 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5823 runs when it is late
OO 5823 often beats the schedule: 116 of 335 completed flights, 35%, arrived 15 minutes or more early. The 73 late arrivals split 24 under half an hour, 22 between 30 and 60 minutes, and 27 an hour or more.
- 15+ min early116 flights34.6%
- Within 15 min146 flights43.6%
- 15–29 min late24 flights7.2%
- 30–59 min late22 flights6.6%
- 1–2 hours late12 flights3.6%
- 2+ hours late15 flights4.5%
Scale runs 0% to 100%.
Share of 335 completed flights by arrival against schedule.
10 of 54 late departures made up the time and arrived on time, 19% of them. In the other direction, 29 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at ORD.
The worst days
Worst days for OO 5823
The latest arrival of the period was on 7 June 2026, 4 hours 51 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 June 2026 | 4 hours 51 minutes | Carrier |
| 15 July 2026 | 4 hours 46 minutes | Carrier |
| 17 March 2026 | 4 hours 11 minutes | Carrier |
| 6 March 2026 | 3 hours 40 minutes | National Airspace System |
| 6 December 2025 | 3 hours 31 minutes | Extreme weather |
Delay causes
Why OO 5823 runs late
Carrier accounts for 54% of the 5,400 delay minutes carriers reported here, and the remaining four split what is left.
- 54%Carrier
- 25%National Airspace System
- 13%Late-arriving aircraft
- 8%Extreme weather
The largest share of delay minutes, 54%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,905 of the 5,400 delay minutes reported here. The split is drawn from 5,400 delay minutes reported on OO 5823.
Cancellations sit at 2.04% against a national 1.89%, which is ordinary. Diversions add another 0.29%.
Connections and routes
What a delay on this flight costs
8.1% 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 a little over an hour, which a normal layover absorbs.
The 693 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on three other city pairs in the data, including ORD to TYS (47), ORD to SCE (30) and ORD to ATW (2), but none flew often enough under OO 5823 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to OKC to ORD only.
One caution: this is a thin sample. 343 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 5823
For a booking, read OO 5823 as 78.2% on time with 2.04% cancelled over 343 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- OKC to ORD, every carrier and departure
- ORD to OKC, the return direction
- SkyWest Airlines 5364 on the same route88.7%
- Chicago O'Hare International (ORD) 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.