Carrier route record
OOPIA→ORD
SkyWest Airlines · Peoria to Chicago
- Flights
- 1,290
- Period
- July 2025 to June 2026
- Share of route
- 56%
- Carriers
- 2
Historical statistics for July 2025 to June 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: 4.5% of scheduled flights never operate, against 1.8% nationally. Of the ones that do fly, a little over half of flights arrive on time, worth a D− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 1,290 flights, with a median arrival 1 minute late.
The national on-time rate over the same period is 77.6%, so SkyWest on PIA to ORD runs 15 points behind the country as a whole. Across a thousand flights that is about 147 extra late arrivals.
Key figures
On time
62.9%
Arrivals under 15 minutes late, of 1,228 completed flights
Avg delay
104 min
Across delayed arrivals only, not all flights
Cancelled
4.50%
National rate is 1.81%
Whole route
69.6%
Every carrier on PIA to ORD, 2,311 flights
These figures cover 1,290 flights between July 2025 and June 2026. Beyond the headline rate, 16.6% 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.
Carrier by carrier
SkyWest against every carrier on PIA to ORD
SkyWest flew 1,290 of the 2,311 flights on PIA to ORD, most of the route. Its 62.9% on time is 7 points worse than the route as a whole, which runs 69.6%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Envoy at 77.9% to SkyWest at 62.9%.
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 | 1,021 | 77.9% | 63 min | 4.31% | B− |
| SkyWest Airlines (this page) | 1,290 | 62.9% | 104 min | 4.50% | D− |
Flight by flight
SkyWest flight numbers on PIA to ORD
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 44 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am150 flights85.2%
- 8am–11am375 flights72.5%
- 11am–2pm284 flights68.2%
- 2pm–5pm115 flights58.9%
- 5pm–8pm366 flights40.9%
- 8pm–5am—
Scale runs 30% to 90%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 40.9% on time, against 85.2% 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 375 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 71.2% on time and Sunday the weakest at 55.4%. 16 points is a smaller lever than departure hour, but it is free.
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 47,000 reported delay minutes.
- 30%Late-arriving aircraft
- 30%National Airspace System
- 24%Carrier
- 15%Extreme weather
- 0%Security
Extreme weather accounts for 15% 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 2.4 times the usual weather exposure. The split is drawn from 47,089 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 85.2% on time here.
Cancellations run at 4.50%, against 1.81% nationally. That is roughly 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 16.6% 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.
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 65.6% on time across 1,290 flights, within 3 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 1,290 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 4.50% cancellation rate. A late arrival costs you close to two hours; 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. 1,228 completed flights over 12 months sit behind that.
Related
Where to go next
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.