Carrier route record
OOAZO→ORD
SkyWest Airlines · Kalamazoo to Chicago
- Flights
- 224
- Period
- September 2025 to August 2026
- Share of route
- 24%
- Carriers
- 2
Historical statistics for September 2025 to August 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 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 close to two hours behind schedule. That rests on 224 flights, with a median arrival 5 minutes early.
The US average over the same twelve months is 77.3%, 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
73.7%
Arrivals under 15 minutes late, of 209 completed flights
Avg delay
112 min
Across delayed arrivals only, not all flights
Cancelled
6.70%
National rate is 1.89%
Whole route
78.0%
Every carrier on AZO to ORD, 941 flights
These figures cover 224 flights between September 2025 and August 2026. Beyond the headline rate, 13.4% 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 AZO to ORD
SkyWest flew 224 of the 941 flights on AZO to ORD, about 24% of it. Its 73.7% on time is 4 points worse than the route as a whole, which runs 78.0%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Envoy at 79.3% to SkyWest at 73.7%.
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 | 717 | 79.3% | 80 min | 4.32% | B− |
| SkyWest Airlines (this page)thin sample | 224 | 73.7% | 112 min | 6.70% | C− |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 20 points, against half a point between the best and worst carrier.
- 5am–8am103 flights83.3%
- 8am–11am1 flights—
- 11am–2pm17 flights—
- 2pm–5pm103 flights63.2%
- 5pm–8pm—
- 8pm–5am—
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 83.3% of the time, against 63.2% for the afternoon window. That is 20 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 103 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%
- Jul–Sep 2026124 flights71.9%
Scale runs 65% 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 73.7% on time across 224 flights.
Split by quarter, SkyWest on AZO to ORD logged 4 flights in Oct–Dec 2025, 1 flights in Jan–Mar 2026, 95 flights in Apr–Jun 2026 and 124 flights in Jul–Sep 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 73.7% annual figure is the one to use.
Across the week, Thursday is the strongest day at 80.0% on time and Sunday the weakest at 63.3%, a spread of 17 points.
Arrival by arrival
How late SkyWest on AZO to ORD runs when it is late
SkyWest on AZO to ORD often beats the schedule: 56 of 209 completed flights, 27%, arrived 15 minutes or more early. When SkyWest on AZO to ORD is late it tends to be very late: 28 of its 55 late arrivals were an hour or more behind, and 14 were two hours or more.
- 15+ min early56 flights26.8%
- Within 15 min98 flights46.9%
- 15–29 min late13 flights6.2%
- 30–59 min late14 flights6.7%
- 1–2 hours late14 flights6.7%
- 2+ hours late14 flights6.7%
Scale runs 0% to 100%.
Share of 209 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 47 departures that left 15 minutes late or more, only 4 made it up before arrival. In the other direction, 12 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 AZO to ORD
The latest arrival of the period was on 21 August 2026, 13 hours 35 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 21 August 2026 | 13 hours 35 minutes | Carrier |
| 25 July 2026 | 8 hours 2 minutes | Late-arriving aircraft |
| 29 June 2026 | 6 hours 31 minutes | Carrier |
| 16 August 2026 | 6 hours 27 minutes | Extreme weather |
| 7 June 2026 | 5 hours 5 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 6,178 reported delay minutes.
- 37%Carrier
- 25%Late-arriving aircraft
- 20%National Airspace System
- 16%Extreme weather
- 1%Security
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 6,178 reported delay minutes.
The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,303 of the 6,178 delay minutes reported here.
Cancellations run at 6.70%, against 1.89% nationally. That is about one flight in fifteen 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
13.4% 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 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 64.9% on time across 225 flights, 9 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 9 points of difference.
One caution: this is a thin sample. 224 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 6.70% 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. 209 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.