Carrier route record
YXORD→DTW
Republic Airways · Chicago to Detroit
- Flights
- 454
- Period
- September 2025 to August 2026
- Share of route
- 8%
- Carriers
- 7
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Republic Airways.
Republic on ORD to DTW lands a B−, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 454 flights. The strongest carrier on the route with a full sample, Envoy Air, flew 946 at 78.2% on time.
The US average over the same twelve months is 77.3%, so there is little to separate Republic on ORD 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
79.2%
Arrivals under 15 minutes late, of 433 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
4.63%
National rate is 1.89%
Whole route
71.1%
Every carrier on ORD to DTW, 6,013 flights
These figures cover 454 flights between September 2025 and August 2026. Beyond the headline rate, 9.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Republic against every carrier on ORD to DTW
Republic flew 454 of the 6,013 flights on ORD to DTW, about 8% of it. Its 79.2% on time is 8 points better than the route as a whole, which runs 71.1%. Ranked by on-time rate it is first of seven carriers on the route, where the range runs from Republic at 79.2% to PSA at 60.0%. 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 78.2% of the time; SkyWest Airlines manages 64.6%. Sample sizes sit next to every figure, because a two-point gap across 2,563 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airways (this page) | 454 | 79.2% | 77 min | 4.63% | B− |
| Envoy Air | 946 | 78.2% | 52 min | 3.38% | B− |
| Delta Air Lines | 1,156 | 77.3% | 96 min | 3.20% | B− |
| American Airlinesthin sample | 47 | 70.7% | 135 min | 12.77% | C− |
| United Airlines | 827 | 70.0% | 80 min | 0.97% | C+ |
| SkyWest Airlines | 2,563 | 64.6% | 92 min | 3.47% | D− |
| PSA Airlinesthin sample | 20 | 60.0% | 68 min | 0.00% | D+ |
SkyWest Airlines cancels 3.5% 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.
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 Republic runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 15 points, against 14 points between the best and worst carrier.
- 5am–8am22 flights—
- 8am–11am1 flights—
- 11am–2pm122 flights87.4%
- 2pm–5pm91 flights72.7%
- 5pm–8pm22 flights—
- 8pm–5am196 flights76.0%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 11am–2pm slot at 87.4% on time, ahead of 2pm–5pm at 72.7%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 8pm–5am window is the busiest, with 196 flights scheduled in it.
Across the year
Republic on ORD to DTW through the year
- Jul–Sep 202527 flights—
- Oct–Dec 2025144 flights76.1%
- Jan–Mar 202679 flights78.9%
- Apr–Jun 2026106 flights76.5%
- Jul–Sep 202698 flights81.9%
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 79.2% on time across 454 flights.
Quarter by quarter Republic on ORD to DTW held fairly steady: 76.1% in Oct–Dec 2025, 78.9% in Jan–Mar 2026, 76.5% in Apr–Jun 2026 and 81.9% in Jul–Sep 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
Across the week, Saturday is the strongest day at 83.6% on time and Tuesday the weakest at 73.1%, a spread of 11 points.
Arrival by arrival
How late Republic on ORD to DTW runs when it is late
Republic on ORD to DTW often beats the schedule: 126 of 433 completed flights, 29%, arrived 15 minutes or more early. The 90 late arrivals split 24 under half an hour, 24 between 30 and 60 minutes, and 42 an hour or more.
- 15+ min early126 flights29.1%
- Within 15 min217 flights50.1%
- 15–29 min late24 flights5.5%
- 30–59 min late24 flights5.5%
- 1–2 hours late26 flights6.0%
- 2+ hours late16 flights3.7%
Scale runs 0% to 100%.
Share of 433 completed flights by arrival against schedule.
14 of 76 late departures made up the time and arrived on time, 18% of them. In the other direction, 28 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 DTW.
The worst days
Worst days for Republic on ORD to DTW
The latest arrival of the period was on 3 April 2026, 10 hours 1 minute behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 April 2026 | 10 hours 1 minute | Carrier |
| 24 September 2025 | 4 hours 16 minutes | Late-arriving aircraft |
| 10 November 2025 | 4 hours 3 minutes | Late-arriving aircraft |
| 30 August 2026 | 4 hours 1 minute | National Airspace System |
| 30 November 2025 | 4 hours | Late-arriving aircraft |
Delay causes
Why Republic runs late on this route
Late-arriving aircraft accounts for 43% of the 6,956 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Late-arriving aircraft
- 27%National Airspace System
- 24%Carrier
- 5%Extreme weather
43% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,956 reported delay minutes here, that single category outweighs weather by 8 to one. The split is drawn from 6,956 reported delay minutes.
Cancellations run at 4.63%, 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
9.7% 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 235 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 11am–2pm window matters as much as it does.
The return leg runs 81.8% on time across 453 flights, within 3 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. 454 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 Republic on ORD to DTW
Put together: the delay figures matter less here than the 4.63% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 11am–2pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 433 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to DTW, every carrier
- Republic on DTW to ORD, the return leg
- Envoy Air on ORD to DTW78.2%
- Delta Air Lines on ORD to DTW77.3%
- United Airlines on ORD to DTW70.0%
- SkyWest Airlines on ORD to DTW64.6%
- Republic Airways network-wide record
- Chicago O'Hare International (ORD) delay statistics
- Detroit Metropolitan Wayne County (DTW) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.