Carrier route record
OOORD→PIA
SkyWest Airlines · Chicago to Peoria
- Flights
- 1,212
- Period
- September 2025 to August 2026
- Share of route
- 55%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on ORD to PIA carries a cancellation problem, not just a delay problem: 4.4% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about two flights in three arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 1,212 flights, with a median arrival right on schedule.
The national on-time rate over the same period is 77.3%, so SkyWest on ORD to PIA runs 10 points behind the country as a whole. Across a thousand flights that is about 101 extra late arrivals.
Key figures
On time
67.2%
Arrivals under 15 minutes late, of 1,157 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
4.37%
National rate is 1.89%
Whole route
70.1%
Every carrier on ORD to PIA, 2,213 flights
These figures cover 1,212 flights between September 2025 and August 2026. Beyond the headline rate, 13.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
SkyWest against every carrier on ORD to PIA
SkyWest flew 1,212 of the 2,213 flights on ORD to PIA, most of the route. Its 67.2% on time is 3 points worse than the route as a whole, which runs 70.1%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Envoy at 73.7% to SkyWest at 67.2%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Envoy Air | 1,001 | 73.7% | 57 min | 4.70% | C− |
| SkyWest Airlines (this page) | 1,212 | 67.2% | 74 min | 4.37% | C− |
Flight by flight
SkyWest flight numbers on ORD to PIA
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Departure window
When SkyWest runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 16 points, against half a point between the best and worst carrier.
- 5am–8am7 flights—
- 8am–11am291 flights73.5%
- 11am–2pm308 flights69.9%
- 2pm–5pm325 flights59.9%
- 5pm–8pm81 flights57.5%
- 8pm–5am200 flights69.1%
Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 57.5% on time, against 73.5% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 2pm–5pm window is the busiest, with 325 flights scheduled in it.
Across the year
SkyWest on ORD to PIA through the year
December is the weak month at 60.6% on time, against 75.0% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. April was the busiest month here, with 206 flights.
Across the week, Tuesday is the strongest day at 73.3% on time and Sunday the weakest at 57.8%, a spread of 16 points.
Arrival by arrival
How late SkyWest on ORD to PIA runs when it is late
The 379 late arrivals split 115 under half an hour, 106 between 30 and 60 minutes, and 158 an hour or more.
- 15+ min early266 flights23.0%
- Within 15 min512 flights44.3%
- 15–29 min late115 flights9.9%
- 30–59 min late106 flights9.2%
- 1–2 hours late97 flights8.4%
- 2+ hours late61 flights5.3%
Scale runs 0% to 100%.
Share of 1,157 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 326 departures that left 15 minutes late or more, only 38 made it up before arrival. In the other direction, 91 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 PIA.
The worst days
Worst days for SkyWest on ORD to PIA
The latest arrival of the period was on 17 June 2026, 15 hours 8 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across June, March, December and May, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 June 2026 | 15 hours 8 minutes | Extreme weather |
| 6 March 2026 | 9 hours 8 minutes | National Airspace System |
| 7 December 2025 | 6 hours 5 minutes | Late-arriving aircraft |
| 7 December 2025 | 5 hours 53 minutes | Late-arriving aircraft |
| 16 May 2026 | 5 hours 15 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
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 28,000 reported delay minutes.
- 33%Carrier
- 29%Late-arriving aircraft
- 21%National Airspace System
- 16%Extreme weather
Extreme weather accounts for 16% 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 monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.7 times the usual weather exposure. The split is drawn from 28,197 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 73.5% on time here.
Cancellations run at 4.37%, against 1.89% nationally. That is roughly 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 stage length
What a delay here costs
13.7% 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.
At 130 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8am–11am window matters as much as it does.
The return leg runs 65.0% on time across 1,213 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 1,212 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking SkyWest on ORD to PIA
Put together: the delay figures matter less here than the 4.37% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 1,157 completed flights over 12 months sit behind that.
Related
Where to go next
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.