Carrier route record
OHDAY→ORD
PSA Airlines · Dayton to Chicago
- Flights
- 561
- Period
- September 2025 to August 2026
- Share of route
- 31%
- Carriers
- 5
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with PSA Airlines.
PSA on DAY 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 77.3%. The late ones land close to two hours behind schedule. That rests on 561 flights. The strongest carrier on the route with a full sample, Envoy Air, flew 464 at 78.7% on time.
The US average over the same twelve months is 77.3%, so there is little to separate PSA on DAY 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
75.0%
Arrivals under 15 minutes late, of 535 completed flights
Avg delay
111 min
Across delayed arrivals only, not all flights
Cancelled
4.28%
National rate is 1.89%
Whole route
72.7%
Every carrier on DAY to ORD, 1,810 flights
These figures cover 561 flights between September 2025 and August 2026. Beyond the headline rate, 13.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
PSA against every carrier on DAY to ORD
PSA flew 561 of the 1,810 flights on DAY to ORD, about 31% of it. Its 75.0% on time is 2 points better than the route as a whole, which runs 72.7%. Ranked by on-time rate it is number four of five carriers on the route, where the range runs from Republic at 90.6% to SkyWest at 62.4%. 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 78.7% of the time; SkyWest Airlines manages 62.4%. Sample sizes sit next to every figure, because a two-point gap across 621 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 95 | 90.6% | 106 min | 10.53% | A− |
| United Airlinesthin sample | 69 | 80.9% | 44 min | 1.45% | B |
| Envoy Air | 464 | 78.7% | 89 min | 3.02% | B− |
| PSA Airlines (this page) | 561 | 75.0% | 111 min | 4.28% | B− |
| SkyWest Airlines | 621 | 62.4% | 101 min | 6.28% | D− |
SkyWest Airlines cancels 6.3% 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 PSA runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 19 points, against 16 points between the best and worst carrier.
- 5am–8am—
- 8am–11am239 flights78.9%
- 11am–2pm244 flights71.0%
- 2pm–5pm36 flights64.7%
- 5pm–8pm42 flights83.3%
- 8pm–5am—
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 83.3% on time. The full set of windows spans 19 points.
Across the year
PSA on DAY to ORD through the year
December is the weak month at 63.1% on time, against 90.9% 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. January was the busiest month here, with 90 flights.
Across the week, Friday is the strongest day at 80.5% on time and Thursday the weakest at 72.7%, a spread of 8 points.
Arrival by arrival
How late PSA on DAY to ORD runs when it is late
PSA on DAY to ORD often beats the schedule: 210 of 535 completed flights, 39%, arrived 15 minutes or more early. When PSA on DAY to ORD is late it tends to be very late: 71 of its 134 late arrivals were an hour or more behind, and 38 were two hours or more.
- 15+ min early210 flights39.3%
- Within 15 min191 flights35.7%
- 15–29 min late32 flights6.0%
- 30–59 min late31 flights5.8%
- 1–2 hours late33 flights6.2%
- 2+ hours late38 flights7.1%
Scale runs 0% to 100%.
Share of 535 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 122 departures that left 15 minutes late or more, only 13 made it up before arrival. 25 flights left on time and still arrived late.
The worst days
Worst days for PSA on DAY to ORD
The latest arrival of the period was on 8 April 2026, 21 hours 59 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in January 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 8 April 2026 | 21 hours 59 minutes | Carrier |
| 23 January 2026 | 8 hours 34 minutes | Late-arriving aircraft |
| 2 February 2026 | 7 hours 6 minutes | Late-arriving aircraft |
| 28 January 2026 | 6 hours 50 minutes | Late-arriving aircraft |
| 25 January 2026 | 6 hours 17 minutes | Late-arriving aircraft |
Delay causes
Why PSA runs late on this route
Late-arriving aircraft accounts for 51% of the 15,000 delay minutes carriers reported here, and the remaining four split what is left.
- 51%Late-arriving aircraft
- 27%Carrier
- 18%National Airspace System
- 4%Extreme weather
51% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 15,000 reported delay minutes here, that single category outweighs weather by 13 to one. The split is drawn from 14,924 reported delay minutes.
Cancellations run at 4.28%, against 1.89% nationally. That is about one flight in 25 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
13.3% 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 5pm–8pm window matters as much as it does.
The return leg is a different operation and performs like one: it runs 60.5% on time across 562 flights, 15 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 15 points of difference.
One caution: this is a thin sample. 561 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 PSA on DAY to ORD
Put together: the delay figures matter less here than the 4.28% cancellation rate. A late arrival costs you close to two hours; a cancelled flight costs you the day. Book the 5pm–8pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 535 completed flights over 12 months sit behind that.
Related
Where to go next
- DAY to ORD, every carrier
- PSA on ORD to DAY, the return leg
- Envoy Air on DAY to ORD78.7%
- SkyWest Airlines on DAY to ORD62.4%
- PSA 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.