Carrier route record
OOORD→DAY
SkyWest Airlines · Chicago to Dayton
- Flights
- 622
- Period
- September 2025 to August 2026
- Share of route
- 34%
- Carriers
- 5
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on ORD to DAY draws a D−. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 622 flights. The strongest carrier on the route with a full sample, Envoy Air, flew 467 at 76.1% on time.
The national on-time rate over the same period is 77.3%, so SkyWest on ORD to DAY runs 16 points behind the country as a whole. Across a thousand flights that is about 162 extra late arrivals.
Key figures
On time
61.1%
Arrivals under 15 minutes late, of 589 completed flights
Avg delay
81 min
Across delayed arrivals only, not all flights
Cancelled
5.31%
National rate is 1.89%
Whole route
66.2%
Every carrier on ORD to DAY, 1,815 flights
These figures cover 622 flights between September 2025 and August 2026. Beyond the headline rate, 17.5% 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 ORD to DAY
SkyWest flew 622 of the 1,815 flights on ORD to DAY, about 34% of it. Its 61.1% on time is 5 points worse than the route as a whole, which runs 66.2%. Ranked by on-time rate it is number four of five carriers on the route, where the range runs from United at 80.9% to PSA at 60.5%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Envoy Air arrives on time 76.1% of the time; PSA Airlines manages 60.5%. Sample sizes sit next to every figure, because a two-point gap across 562 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlinesthin sample | 69 | 80.9% | 80 min | 1.45% | B |
| Envoy Air | 467 | 76.1% | 68 min | 3.21% | B− |
| Republic Airwaysthin sample | 95 | 72.7% | 65 min | 7.37% | C− |
| SkyWest Airlines (this page) | 622 | 61.1% | 81 min | 5.31% | D− |
| PSA Airlines | 562 | 60.5% | 162 min | 5.52% | D− |
PSA Airlines cancels 5.5% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
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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 20 points, against 16 points between the best and worst carrier.
- 5am–8am—
- 8am–11am94 flights69.7%
- 11am–2pm171 flights64.0%
- 2pm–5pm237 flights61.4%
- 5pm–8pm70 flights49.3%
- 8pm–5am50 flights51.0%
Scale runs 40% to 75%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 49.3% on time, against 69.7% for the 8am–11am 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 2pm–5pm window is the busiest, with 237 flights scheduled in it.
Across the year
SkyWest on ORD to DAY through the year
Delays peak in March, when the on-time rate falls to 51.4%. June is the strongest month at 66.7%. Moving a flexible trip across that boundary buys 15 points. July was the busiest month here, with 120 flights.
Across the week, Tuesday is the strongest day at 69.5% on time and Sunday the weakest at 48.9%, a spread of 21 points.
Arrival by arrival
How late SkyWest on ORD to DAY runs when it is late
The 229 late arrivals split 65 under half an hour, 61 between 30 and 60 minutes, and 103 an hour or more.
- 15+ min early93 flights15.8%
- Within 15 min267 flights45.3%
- 15–29 min late65 flights11.0%
- 30–59 min late61 flights10.4%
- 1–2 hours late54 flights9.2%
- 2+ hours late49 flights8.3%
Scale runs 0% to 100%.
Share of 589 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 194 departures that left 15 minutes late or more, only 17 made it up before arrival. In the other direction, 52 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 DAY.
The worst days
Worst days for SkyWest on ORD to DAY
The latest arrival of the period was on 17 July 2026, 11 hours 29 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across July, March, November and December, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 July 2026 | 11 hours 29 minutes | Late-arriving aircraft |
| 5 July 2026 | 10 hours 50 minutes | Carrier |
| 16 March 2026 | 6 hours 21 minutes | Extreme weather |
| 26 November 2025 | 5 hours 44 minutes | National Airspace System |
| 7 December 2025 | 5 hours 35 minutes | National Airspace System |
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 19,000 reported delay minutes.
- 36%Late-arriving aircraft
- 32%Carrier
- 19%National Airspace System
- 12%Extreme weather
Extreme weather accounts for 12% 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 2.0 times the usual weather exposure. The split is drawn from 18,650 reported delay minutes.
36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 19,000 reported delay minutes here, that single category outweighs weather by 3 to one.
Cancellations run at 5.31%, 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
17.5% 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 240 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 62.4% on time across 621 flights, within about a point 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. 622 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 ORD to DAY
Put together: the delay figures matter less here than the 5.31% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 589 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to DAY, every carrier
- SkyWest on DAY to ORD, the return leg
- Envoy Air on ORD to DAY76.1%
- PSA Airlines on ORD to DAY60.5%
- SkyWest Airlines network-wide record
- Chicago O'Hare International (ORD) delay statistics
- The US routes with the most cancellations
- Same route, different airline: where the carrier you pick matters most
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.