Carrier route record
MQCHS→ORD
Envoy Air · Charleston to Chicago
- Flights
- 562
- Period
- July 2025 to June 2026
- Share of route
- 27%
- Carriers
- 6
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Envoy Air.
Envoy on CHS to ORD lands a B, 3 points better than the national rate of 77.6%. 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 is a workable record, not a spotless one. That rests on 562 flights. The strongest carrier on the route with a full sample, United Airlines, flew 749 at 77.1% on time.
The US average over the same twelve months is 77.6%, so there is little to separate Envoy on CHS 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
80.1%
Arrivals under 15 minutes late, of 542 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
2.67%
National rate is 1.81%
Whole route
76.6%
Every carrier on CHS to ORD, 2,091 flights
These figures cover 562 flights between July 2025 and June 2026. Beyond the headline rate, 8.3% 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
Envoy against every carrier on CHS to ORD
Envoy flew 562 of the 2,091 flights on CHS to ORD, about 27% of it. Its 80.1% on time is 4 points better than the route as a whole, which runs 76.6%. Ranked by on-time rate it is number three of six carriers on the route, where the range runs from PSA at 100.0% to SkyWest at 69.1%. Three of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. United Airlines arrives on time 77.1% of the time; Republic Airways manages 70.5%. Sample sizes sit next to every figure, because a two-point gap across 456 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| PSA Airlinesthin sample | 1 | 100.0% | — | 0.00% | A+ |
| American Airlinesthin sample | 238 | 81.0% | 118 min | 1.68% | B |
| Envoy Air (this page) | 562 | 80.1% | 75 min | 2.67% | B |
| United Airlines | 749 | 77.1% | 73 min | 2.00% | B |
| Republic Airways | 456 | 70.5% | 52 min | 3.07% | C− |
| SkyWest Airlinesthin sample | 85 | 69.1% | 124 min | 4.71% | C− |
Republic Airways cancels 3.1% 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 31 points, against 7 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am128 flights91.3%
- 8am–11am37 flights94.3%
- 11am–2pm167 flights84.0%
- 2pm–5pm23 flights—
- 5pm–8pm147 flights63.6%
- 8pm–5am60 flights76.4%
Scale runs 55% to 100%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 63.6% on time, against 94.3% 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 11am–2pm window is the busiest, with 167 flights scheduled in it.
Across the year
Envoy on CHS to ORD through the year
July is the worst month at 69.3% on time, 21 points below February, the best at 90.2%. 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. July was the busiest month here, with 78 flights.
Across the week, Thursday is the strongest day at 87.0% on time and Sunday the weakest at 72.2%. 15 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 8,090 reported delay minutes.
- 42%Late-arriving aircraft
- 35%National Airspace System
- 19%Carrier
- 4%Extreme weather
42% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 8,090 reported delay minutes here, that single category outweighs weather by 11 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 8,090 reported delay minutes.
35% 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 2,838 minutes out of 8,090, against a national NAS share of 21%.
Cancellations run at 2.67%, against 1.81% nationally. That is about one flight in 40 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
8.3% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The 760 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 74.2% on time across 562 flights, 6 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 6 points of difference.
One caution: this is a thin sample. 562 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 CHS to ORD
Put together: treat all of this as provisional. 562 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 80.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 542 completed flights over 12 months sit behind that.
Related
Where to go next
- CHS to ORD, every carrier
- Envoy on ORD to CHS, the return leg
- American Airlines on CHS to ORD81.0%
- United Airlines on CHS to ORD77.1%
- Republic Airways on CHS to ORD70.5%
- Envoy Air network-wide record
- Chicago O'Hare International (ORD) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.