Carrier route record
MQIND→ORD
Envoy Air · Indianapolis to Chicago
- Flights
- 576
- Period
- July 2025 to June 2026
- Share of route
- 11%
- Carriers
- 5
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Envoy Air.
Envoy on IND to ORD 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 an hour and a half on average. That is a workable record, not a spotless one. That rests on 576 flights. The strongest carrier on the route with a full sample, Republic Airways, flew 2,713 at 82.4% on time.
Republic Airways is the most reliable of the four carriers covered here at 82.4% on time across 2,713 flights.
Key figures
On time
77.6%
Arrivals under 15 minutes late, of 563 completed flights
Avg delay
89 min
Across delayed arrivals only, not all flights
Cancelled
1.91%
National rate is 1.81%
Whole route
76.5%
Every carrier on IND to ORD, 5,201 flights
These figures cover 576 flights between July 2025 and June 2026. Beyond the headline rate, 9.9% 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
Envoy against every carrier on IND to ORD
Envoy flew 576 of the 5,201 flights on IND to ORD, about 11% of it. Its 77.6% on time is about level with the route as a whole at 76.5%. Ranked by on-time rate it is number two of five carriers on the route, where the range runs from Republic at 82.4% to SkyWest at 67.2%.
The choice of carrier is not cosmetic here. Republic Airways arrives on time 82.4% of the time; SkyWest Airlines manages 67.2%. Sample sizes sit next to every figure, because a two-point gap across 649 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airways | 2,713 | 82.4% | 70 min | 2.06% | B |
| Envoy Air (this page) | 576 | 77.6% | 89 min | 1.91% | B |
| United Airlines | 749 | 67.8% | 82 min | 2.40% | C |
| American Airlines | 514 | 67.3% | 87 min | 6.42% | C− |
| SkyWest Airlines | 649 | 67.2% | 109 min | 6.32% | C− |
American Airlines cancels 6.4% 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.
Departure window
When Envoy runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 16 points, against 15 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am92 flights89.0%
- 8am–11am91 flights77.8%
- 11am–2pm76 flights80.0%
- 2pm–5pm298 flights73.3%
- 5pm–8pm19 flights—
- 8pm–5am—
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 89.0% of the time, against 73.3% for the afternoon window. That is 16 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 298 flights scheduled in it.
Across the year
Envoy on IND to ORD through the year
July is the worst month at 58.5% on time, 33 points below May, the best at 91.7%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. March was the busiest month here, with 112 flights.
Across the week, Wednesday is the strongest day at 84.5% on time and Sunday the weakest at 73.8%. 11 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Envoy 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 11,000 reported delay minutes.
- 34%National Airspace System
- 34%Late-arriving aircraft
- 24%Extreme weather
- 8%Carrier
Extreme weather accounts for 24% 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 3.8 times the usual weather exposure. The split is drawn from 11,259 reported delay minutes.
34% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 3,863 minutes out of 11,000, against a national NAS share of 21%.
Cancellations sit at 1.91% against a national 1.81%, which is ordinary. Diversions add another 0.35%.
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. 9.9% 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 177 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 runs 80.3% on time across 576 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. 576 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 Envoy on IND to ORD
Put together: treat all of this as provisional. 576 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 77.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 563 completed flights over 12 months sit behind that.
Related
Where to go next
- IND to ORD, every carrier
- Envoy on ORD to IND, the return leg
- Republic Airways on IND to ORD82.4%
- United Airlines on IND to ORD67.8%
- American Airlines on IND to ORD67.3%
- SkyWest Airlines on IND to ORD67.2%
- Envoy Air network-wide record
- Indianapolis International (IND) delay statistics
- Chicago O'Hare International (ORD) delay statistics
- Same route, different airline: where the carrier you pick matters most
- Why the first flight of the morning is statistically safest
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.