Flight number record
OO 5048
SkyWest Airlines · Chicago to Lafayette
- Route
- ORD → LAF
- Departs
- 21:09
- Flights
- 334
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 D−. 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 334 flights, with a median arrival 1 minute late.
The national on-time rate over the same period is 77.3%, so OO 5048 runs 14 points behind the country as a whole. Across a thousand flights that is about 135 extra late arrivals.
Key figures
On time
63.8%
Arrivals under 15 minutes late, of 318 completed flights
Avg delay
118 min
Across delayed arrivals only, not all flights
Cancelled
4.19%
National rate is 1.89%
1 hour+ late
15.7%
National rate is 8.3%
These figures cover 334 flights between September 2025 and August 2026. Beyond the headline rate, 15.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5048 flies
OO 5048 flies ORD to LAF without a single fixed slot. Its most common scheduled departure was 21:09, used on 65 of 334 flights, with 21:49 (60 flights) and 21:15 (58 flights) next.
- Departs 21:0965 flights19.5%
- Departs 21:4960 flights18.0%
- Departs 21:1558 flights17.4%
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 21:09 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 5048 runs 6 points worse at 63.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 5048 next to ORD to LAF
Every carrier on ORD to LAF combined arrived on time 67.3% of the time across 573 flights, so OO 5048 is 4 points behind it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5048thin sample | 334 | 63.8% | 118 min | 4.19% | D− |
| All SkyWest Airlines on ORD–LAF | 573 | 67.3% | 109 min | 4.01% | C− |
| All carriers on ORD–LAF | 573 | 67.3% | 109 min | 4.01% | C− |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5048 quarter by quarter
OO 5048 did not run the same all year. Its best quarter was Jan–Mar 2026 at 72.1% on time and its weakest Jul–Sep 2026 at 56.1%, a swing of 16 points on roughly 67 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 202530 flights66.7%
- Oct–Dec 202591 flights61.8%
- Jan–Mar 202690 flights72.1%
- Apr–Jun 202678 flights59.7%
- Jul–Sep 202645 flights56.1%
Scale runs 50% to 80%.
By weekday, OO 5048 did best on Monday at 75.5% on time and worst on Sunday at 52.0%. Each day rests on about 48 flights, so a gap of 24 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5048 runs when it is late
The 115 late arrivals split 36 under half an hour, 29 between 30 and 60 minutes, and 50 an hour or more.
- 15+ min early69 flights21.7%
- Within 15 min134 flights42.1%
- 15–29 min late36 flights11.3%
- 30–59 min late29 flights9.1%
- 1–2 hours late27 flights8.5%
- 2+ hours late23 flights7.2%
Scale runs 0% to 100%.
Share of 318 completed flights by arrival against schedule.
15 of 104 late departures made up the time and arrived on time, 14% of them. In the other direction, 26 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 LAF.
The worst days
Worst days for OO 5048
The latest arrival of the period was on 20 February 2026, 13 hours 43 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 |
|---|---|---|
| 20 February 2026 | 13 hours 43 minutes | Carrier |
| 26 March 2026 | 13 hours 32 minutes | Late-arriving aircraft |
| 30 August 2026 | 12 hours 44 minutes | Late-arriving aircraft |
| 30 January 2026 | 10 hours 56 minutes | Carrier |
| 3 May 2026 | 10 hours 33 minutes | Carrier |
Delay causes
Why OO 5048 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 14,000 reported delay minutes.
- 38%Carrier
- 36%Late-arriving aircraft
- 22%National Airspace System
- 4%Extreme weather
36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 14,000 reported delay minutes here, that single category outweighs weather by 9 to one. The split is drawn from 13,511 delay minutes reported on OO 5048.
Cancellations run at 4.19%, against 1.89% 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
15.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
Every one of the 334 flights under OO 5048 in the data flew ORD to LAF. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 334 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: 4.19% of its 334 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.
Related
Where to go next
- 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
- Why the first flight of the morning is statistically safest
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.