Carrier route record
OOAZO→ORD
SkyWest Airlines · Kalamazoo to Chicago
- Flights
- 100
- Period
- July 2025 to June 2026
- Share of route
- 10%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on AZO to ORD sits in the middle of the pack with a B−. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.6%. The late ones land close to two hours behind schedule. That rests on 100 flights, with a median arrival 9 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate SkyWest on AZO to ORD from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
75.8%
Arrivals under 15 minutes late, of 95 completed flights
Avg delay
101 min
Across delayed arrivals only, not all flights
Cancelled
5.00%
National rate is 1.81%
Whole route
79.7%
Every carrier on AZO to ORD, 990 flights
These figures cover 100 flights between July 2025 and June 2026. Beyond the headline rate, 13.7% 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 AZO to ORD
SkyWest flew 100 of the 990 flights on AZO to ORD, about 10% of it. Its 75.8% on time is 4 points worse than the route as a whole, which runs 79.7%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Envoy at 80.2% to SkyWest at 75.8%.
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 | 890 | 80.2% | 77 min | 4.16% | B− |
| SkyWest Airlines (this page)thin sample | 100 | 75.8% | 101 min | 5.00% | B− |
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 14 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–8am41 flights82.1%
- 8am–11am1 flights—
- 11am–2pm17 flights—
- 2pm–5pm41 flights68.4%
- 5pm–8pm—
- 8pm–5am—
Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 82.1% of the time, against 68.4% for the afternoon window. That is 14 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 41 flights scheduled in it.
Across the year
SkyWest on AZO to ORD through the year
- Oct–Dec 20254 flights—
- Jan–Mar 20261 flights—
- Apr–Jun 202695 flights77.8%
Scale runs 70% to 85%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 75.8% on time across 100 flights.
Split by quarter, SkyWest on AZO to ORD logged 4 flights in Oct–Dec 2025, 1 flights in Jan–Mar 2026 and 95 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 75.8% annual figure is the one to use.
Delay causes
Why SkyWest runs late on this route
One category carries most of the weight here. Carrier accounts for 46% of the 2,311 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 46%Carrier
- 24%Late-arriving aircraft
- 16%National Airspace System
- 11%Extreme weather
- 3%Security
Extreme weather accounts for 11% 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 1.8 times the usual weather exposure. The split is drawn from 2,311 reported delay minutes.
The largest share of delay minutes, 46%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,064 of the 2,311 delay minutes reported here.
Cancellations run at 5.00%, against 1.81% 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 13.7% 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 122 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 is a different operation and performs like one: it runs 66.3% on time across 101 flights, 10 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 10 points of difference.
One caution: this is a thin sample. 100 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 SkyWest on AZO to ORD
Put together: the delay figures matter less here than the 5.00% 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. 95 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.