Carrier route record
OOPIA→ORD
SkyWest Airlines · Peoria to Chicago
- Flights
- 1,213
- 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 PIA to ORD carries a cancellation problem, not just a delay problem: 4.7% 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 1,213 flights, with a median arrival right on schedule.
The national on-time rate over the same period is 77.3%, so SkyWest on PIA to ORD runs 12 points behind the country as a whole. Across a thousand flights that is about 123 extra late arrivals.
Key figures
On time
65.0%
Arrivals under 15 minutes late, of 1,153 completed flights
Avg delay
98 min
Across delayed arrivals only, not all flights
Cancelled
4.70%
National rate is 1.89%
Whole route
70.5%
Every carrier on PIA to ORD, 2,214 flights
These figures cover 1,213 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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Carrier by carrier
SkyWest against every carrier on PIA to ORD
SkyWest flew 1,213 of the 2,214 flights on PIA to ORD, most of the route. Its 65.0% on time is 6 points worse than the route as a whole, which runs 70.5%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Envoy at 77.2% to SkyWest at 65.0%.
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 | 77.2% | 82 min | 4.60% | B− |
| SkyWest Airlines (this page) | 1,213 | 65.0% | 98 min | 4.70% | C− |
Flight by flight
SkyWest flight numbers on PIA to ORD
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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 43 points, against half a point between the best and worst carrier.
- 5am–8am103 flights86.6%
- 8am–11am416 flights73.5%
- 11am–2pm276 flights69.6%
- 2pm–5pm69 flights69.7%
- 5pm–8pm349 flights43.6%
- 8pm–5am—
Scale runs 35% to 90%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 43.6% on time, against 86.6% for the 5am–8am 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 8am–11am window is the busiest, with 416 flights scheduled in it.
Across the year
SkyWest on PIA to ORD through the year
December is the weak month at 53.4% on time, against 77.7% in June. 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, Saturday is the strongest day at 74.5% on time and Sunday the weakest at 57.6%, a spread of 17 points.
Arrival by arrival
How late SkyWest on PIA to ORD runs when it is late
SkyWest on PIA to ORD often beats the schedule: 310 of 1,153 completed flights, 27%, arrived 15 minutes or more early. The 403 late arrivals split 116 under half an hour, 106 between 30 and 60 minutes, and 181 an hour or more.
- 15+ min early310 flights26.9%
- Within 15 min440 flights38.2%
- 15–29 min late116 flights10.1%
- 30–59 min late106 flights9.2%
- 1–2 hours late84 flights7.3%
- 2+ hours late97 flights8.4%
Scale runs 0% to 100%.
Share of 1,153 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 317 departures that left 15 minutes late or more, only 29 made it up before arrival. In the other direction, 115 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 ORD.
The worst days
Worst days for SkyWest on PIA to ORD
The latest arrival of the period was on 13 April 2026, 25 hours 1 minute behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across April, June, March and February, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 13 April 2026 | 25 hours 1 minute | Carrier |
| 17 June 2026 | 14 hours 53 minutes | Extreme weather |
| 2 April 2026 | 10 hours 59 minutes | National Airspace System |
| 6 March 2026 | 9 hours 45 minutes | National Airspace System |
| 26 February 2026 | 8 hours 57 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 40,000 reported delay minutes.
- 34%Late-arriving aircraft
- 29%National Airspace System
- 24%Carrier
- 13%Extreme weather
- 0%Security
Extreme weather accounts for 13% 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 2.1 times the usual weather exposure. The split is drawn from 39,609 reported delay minutes.
34% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 40,000 reported delay minutes here, that single category outweighs weather by 3 to one.
Cancellations run at 4.70%, against 1.89% nationally. That is about one flight in twenty 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
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.
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 5am–8am window matters as much as it does.
The return leg runs 67.2% on time across 1,212 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 1,213 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 PIA to ORD
Put together: the delay figures matter less here than the 4.70% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 1,153 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.