Carrier route record
OOCMH→DTW
SkyWest Airlines · Columbus to Detroit
- Flights
- 523
- Period
- July 2025 to June 2026
- Share of route
- 37%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on CMH to DTW lands a B, level with the national rate of 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That is a workable record, not a spotless one. That rests on 523 flights, with a median arrival 8 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate SkyWest on CMH to DTW from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.4%
Arrivals under 15 minutes late, of 514 completed flights
Avg delay
109 min
Across delayed arrivals only, not all flights
Cancelled
1.72%
National rate is 1.81%
Whole route
85.2%
Every carrier on CMH to DTW, 1,407 flights
These figures cover 523 flights between July 2025 and June 2026. Beyond the headline rate, 11.3% 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 CMH to DTW
SkyWest flew 523 of the 1,407 flights on CMH to DTW, about 37% of it. Its 77.4% on time is 8 points worse than the route as a whole, which runs 85.2%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Republic at 89.8% to Delta at 60.0%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
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 |
|---|---|---|---|---|---|
| Republic Airways | 879 | 89.8% | 70 min | 0.34% | A+ |
| SkyWest Airlines (this page) | 523 | 77.4% | 109 min | 1.72% | B |
| Delta Air Linesthin sample | 5 | 60.0% | 52 min | 0.00% | D+ |
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 28 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–8am107 flights72.5%
- 8am–11am173 flights90.7%
- 11am–2pm6 flights—
- 2pm–5pm118 flights62.9%
- 5pm–8pm119 flights75.4%
- 8pm–5am—
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 90.7% of the time, against 62.9% for the afternoon window. That is 28 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 173 flights scheduled in it.
Across the year
SkyWest on CMH to DTW through the year
December is the weak month at 56.0% on time, against 95.7% in October. 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. February was the busiest month here, with 72 flights.
Across the week, Saturday is the strongest day at 87.7% on time and Monday the weakest at 66.2%. 22 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
One category carries most of the weight here. Carrier accounts for 75% of the 13,000 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.
- 75%Carrier
- 18%Extreme weather
- 7%National Airspace System
Extreme weather accounts for 18% 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 2.9 times the usual weather exposure. The split is drawn from 12,614 reported delay minutes.
The largest share of delay minutes, 75%, 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 9,455 of the 13,000 delay minutes reported here.
Cancellations sit at 1.72% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
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. 11.3% 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 155 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 75.1% on time across 522 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.
One caution: this is a thin sample. 523 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 CMH to DTW
Put together: treat all of this as provisional. 523 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 77.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 514 completed flights over 12 months sit behind that.
Related
Where to go next
- CMH to DTW, every carrier
- SkyWest on DTW to CMH, the return leg
- Republic Airways on CMH to DTW89.8%
- SkyWest Airlines network-wide record
- John Glenn Columbus International (CMH) delay statistics
- Detroit Metropolitan Wayne County (DTW) delay statistics
- How often a connection fails at the major US hubs
- The best time of day to fly, according to 7.04 million flight records
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.