Flight number record

OO 5262

SkyWest Airlines · Chicago to Milwaukee

Route: ORD → MKE
Departs: 20:50
Flights: 251
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5262, 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 5262 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 77.6%. The late ones land close to two hours behind schedule. That rests on 251 flights, with a median arrival 4 minutes early.

On time

75.5%

Arrivals under 15 minutes late, of 241 completed flights

Avg delay

101 min

Across delayed arrivals only, not all flights

Cancelled

3.98%

National rate is 1.81%

1 hour+ late

10.4%

National rate is 8.1%

These figures cover 251 flights between July 2025 and June 2026. Beyond the headline rate, 10.4% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When OO 5262 flies

OO 5262 flies ORD to MKE without a single fixed slot. Its most common scheduled departure was 20:50, used on 68 of 251 flights, with 20:53 (37 flights) and 20:39 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:5068 flights27.1%
Departs 20:5337 flights14.7%
Departs 20:3937 flights14.7%

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 20:50 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and OO 5262 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.

Against the route

OO 5262 next to ORD to MKE

Every carrier on ORD to MKE combined arrived on time 64.1% of the time across 5,201 flights, so OO 5262 is 11 points ahead of it. SkyWest flew 4,933 flights on the same city pair under all its flight numbers, including this one, and those ran 63.7% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 4 points.

OO 5262 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5262thin sample	251	75.5%	101 min	3.98%	B−
All SkyWest Airlines on ORD–MKE	4,933	63.7%	93 min	4.64%	D−
All carriers on ORD–MKE	5,201	64.1%	93 min	4.75%	D−
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5262 quarter by quarter

Quarter by quarter OO 5262 held fairly steady: 76.7% in Jul–Sep 2025, 78.4% in Oct–Dec 2025 and 73.6% in Jan–Mar 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202543 flights76.7%
Oct–Dec 202589 flights78.4%
Jan–Mar 202690 flights73.6%
Apr–Jun 202629 flights—

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

By weekday, OO 5262 did best on Friday at 81.8% on time and worst on Sunday at 65.7%. Each day rests on about 36 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5262 runs late

One category carries most of the weight here. Carrier accounts for 51% of the 5,937 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
51%
National Airspace System
25%
Late-arriving aircraft
20%
Extreme weather
4%

The largest share of delay minutes, 51%, 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 3,024 of the 5,937 delay minutes reported here. The split is drawn from 5,937 delay minutes reported on OO 5262.

Cancellations run at 3.98%, against 1.81% nationally. That is about one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.4% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

The same number turns up on seven other city pairs in the data, including ORD to TUL (30), PVD to ORD (29) and GRB to ORD (21), but none flew often enough under OO 5262 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to MKE only.

One caution: this is a thin sample. 251 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 5262

For a booking, the cancellation rate is the figure to plan around on OO 5262: 3.98% of its 251 scheduled flights did not operate. A late arrival costs close to two hours, but a cancellation costs the day, so leave a later option open.

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