Flight number record

OO 5823

SkyWest Airlines · Oklahoma City to Chicago

Route: OKC → ORD
Departs: 09:40
Flights: 343
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 343 flights, with a median arrival 7 minutes early.

On time

78.6%

Arrivals under 15 minutes late, of 337 completed flights

Avg delay

71 min

Across delayed arrivals only, not all flights

Cancelled

1.75%

National rate is 1.81%

1 hour+ late

7.1%

National rate is 8.1%

These figures cover 343 flights between July 2025 and June 2026. The median arrival is 7 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.

Schedule

When OO 5823 flies

OO 5823 flies OKC to ORD without a single fixed slot. Its most common scheduled departure was 09:40, used on 49 of 343 flights, with 09:43 (45 flights) and 08:45 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:4049 flights14.3%
Departs 09:4345 flights13.1%
Departs 08:4541 flights12.0%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 09:40 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 5823 runs 6 points worse at 78.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

OO 5823 next to OKC to ORD

Every carrier on OKC to ORD combined arrived on time 75.1% of the time across 2,594 flights, so OO 5823 is 4 points ahead of it. SkyWest flew 2,353 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 79.0%, close to this flight's figure.

OO 5823 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5823thin sample	343	78.6%	71 min	1.75%	B
All SkyWest Airlines on OKC–ORD	2,353	73.8%	94 min	2.89%	C
All carriers on OKC–ORD	2,594	75.1%	93 min	2.78%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5823 quarter by quarter

Quarter by quarter OO 5823 held fairly steady: 75.8% in Jul–Sep 2025, 80.0% in Oct–Dec 2025, 81.5% in Jan–Mar 2026 and 77.8% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights75.8%
Oct–Dec 202577 flights80.0%
Jan–Mar 202683 flights81.5%
Apr–Jun 202691 flights77.8%

Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5823 did best on Thursday at 91.5% on time and worst on Sunday at 67.4%. Each day rests on about 49 flights, so a gap of 24 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5823 runs late

One category carries most of the weight here. Carrier accounts for 57% of the 5,114 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
57%
National Airspace System
25%
Late-arriving aircraft
12%
Extreme weather
6%

The largest share of delay minutes, 57%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,891 of the 5,114 delay minutes reported here. The split is drawn from 5,114 delay minutes reported on OO 5823.

Cancellations sit at 1.75% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

7.1% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The same number turns up on three other city pairs in the data, including ORD to SCE (30), ORD to TYS (6) 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 78.6% on time with 1.75% cancelled over 343 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures