Flight number record

OO 5048

SkyWest Airlines · Chicago to Lafayette

Route: ORD → LAF
Departs: 21:15
Flights: 302
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5048, 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 5048 draws a C−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is close to two hours behind schedule. Build slack into anything you connect to. That rests on 302 flights, with a median arrival right on schedule.

The national on-time rate over the same period is 77.6%, so OO 5048 runs 11 points behind the country as a whole. Across a thousand flights that is about 114 extra late arrivals.

On time

66.2%

Arrivals under 15 minutes late, of 290 completed flights

Avg delay

116 min

Across delayed arrivals only, not all flights

Cancelled

3.31%

National rate is 1.81%

1 hour+ late

15.5%

National rate is 8.1%

These figures cover 302 flights between July 2025 and June 2026. Beyond the headline rate, 15.5% 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 5048 flies

OO 5048 flies ORD to LAF without a single fixed slot. Its most common scheduled departure was 21:15, used on 71 of 302 flights, with 21:09 (65 flights) and 21:40 (45 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:1571 flights23.5%
Departs 21:0965 flights21.5%
Departs 21:4045 flights14.9%

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 21:15 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and OO 5048 runs 4 points worse at 66.2%. 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 5048 next to ORD to LAF

Every carrier on ORD to LAF combined arrived on time 68.5% of the time across 518 flights, so OO 5048 is 2 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 13 points.

OO 5048 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5048thin sample	302	66.2%	116 min	3.31%	C−
All SkyWest Airlines on ORD–LAF	518	68.5%	116 min	3.86%	C−
All carriers on ORD–LAF	518	68.5%	116 min	3.86%	C−
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5048 quarter by quarter

OO 5048 did not run the same all year. Its best quarter was Jul–Sep 2025 at 74.4% on time and its weakest Apr–Jun 2026 at 59.7%, a swing of 15 points on roughly 76 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 202543 flights74.4%
Oct–Dec 202591 flights61.8%
Jan–Mar 202690 flights72.1%
Apr–Jun 202678 flights59.7%

Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5048 did best on Monday at 81.0% on time and worst on Sunday at 53.5%. Each day rests on about 43 flights, so a gap of 28 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5048 runs late

One category carries most of the weight here. Carrier accounts for 43% of the 11,000 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
43%
Late-arriving aircraft
33%
National Airspace System
20%
Extreme weather
5%

The largest share of delay minutes, 43%, 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 4,858 of the 11,000 delay minutes reported here. The split is drawn from 11,392 delay minutes reported on OO 5048.

Cancellations run at 3.31%, against 1.81% nationally. That is about one flight in 30 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. 15.5% 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 one other city pair in the data, including DEN to COD (49), but none flew often enough under OO 5048 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to LAF only.

One caution: this is a thin sample. 302 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 5048

For a booking, the cancellation rate is the figure to plan around on OO 5048: 3.31% of its 302 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