Flight number record
OO 5215
SkyWest Airlines · Chicago to Lincoln
- Route
- ORD → LNK
- Departs
- 08:45
- Flights
- 341
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5215, 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 5215 sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 341 flights, with a median arrival 4 minutes early.
Key figures
On time
73.5%
Arrivals under 15 minutes late, of 332 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
2.05%
National rate is 1.89%
1 hour+ late
10.2%
National rate is 8.3%
These figures cover 341 flights between September 2025 and August 2026. Beyond the headline rate, 10.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5215 flies
OO 5215 flies ORD to LNK without a single fixed slot. Its most common scheduled departure was 08:45, used on 91 of 341 flights, with 08:40 (53 flights) and 08:50 (40 flights) next.
- Departs 08:4591 flights26.7%
- Departs 08:4053 flights15.5%
- Departs 08:5040 flights11.7%
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 5215 runs 10 points worse at 73.5%. 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 5215 next to ORD to LNK
Every carrier on ORD to LNK combined arrived on time 61.3% of the time across 1,622 flights, so OO 5215 is 12 points ahead of it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5215thin sample | 341 | 73.5% | 76 min | 2.05% | C |
| All SkyWest Airlines on ORD–LNK | 1,622 | 61.3% | 92 min | 3.45% | D− |
| All carriers on ORD–LNK | 1,622 | 61.3% | 92 min | 3.45% | D− |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5215 quarter by quarter
OO 5215 did not run the same all year. Its best quarter was Jul–Sep 2026 at 78.7% on time and its weakest Oct–Dec 2025 at 64.0%, a swing of 15 points on roughly 85 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 flights—
- Oct–Dec 202591 flights64.0%
- Jan–Mar 202668 flights73.8%
- Apr–Jun 202691 flights75.3%
- Jul–Sep 202661 flights78.7%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5215 did best on Tuesday at 81.2% on time and worst on Friday at 68.8%. Each day rests on about 49 flights, so a gap of 12 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5215 runs when it is late
OO 5215 often beats the schedule: 97 of 332 completed flights, 29%, arrived 15 minutes or more early. The 88 late arrivals split 26 under half an hour, 28 between 30 and 60 minutes, and 34 an hour or more.
- 15+ min early97 flights29.2%
- Within 15 min147 flights44.3%
- 15–29 min late26 flights7.8%
- 30–59 min late28 flights8.4%
- 1–2 hours late18 flights5.4%
- 2+ hours late16 flights4.8%
Scale runs 0% to 100%.
Share of 332 completed flights by arrival against schedule.
11 of 77 late departures made up the time and arrived on time, 14% of them. In the other direction, 22 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 LNK.
The worst days
Worst days for OO 5215
The latest arrival of the period was on 7 December 2025, 5 hours 29 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across December, March and November, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 December 2025 | 5 hours 29 minutes | Late-arriving aircraft |
| 11 March 2026 | 5 hours 19 minutes | Extreme weather |
| 2 December 2025 | 4 hours 47 minutes | Carrier |
| 30 November 2025 | 4 hours 37 minutes | National Airspace System |
| 13 March 2026 | 4 hours 27 minutes | Late-arriving aircraft |
Delay causes
Why OO 5215 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 6,669 reported delay minutes.
- 38%Carrier
- 29%Late-arriving aircraft
- 17%Extreme weather
- 16%National Airspace System
Extreme weather accounts for 17% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.8 times the usual weather exposure. The split is drawn from 6,669 delay minutes reported on OO 5215.
Cancellations sit at 2.05% against a national 1.89%, which is ordinary. Diversions add another 0.59%.
Connections and routes
What a delay on this flight costs
10.2% 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.
The same number turns up on one other city pair in the data, including ORD to GSP (21), but none flew often enough under OO 5215 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to LNK only.
One caution: this is a thin sample. 341 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 5215
For a booking, read OO 5215 as 73.5% on time with 2.05% cancelled over 341 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ORD to LNK, every carrier and departure
- LNK to ORD, the return direction
- SkyWest Airlines 5314 on the same route57.2%
- 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
- How often a connection fails at the major US hubs
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.