Carrier route record

MQORD→PIT

Envoy Air · Chicago to Pittsburgh

Flights: 189
Period: July 2025 to June 2026
Share of route: 5%
Carriers: 5

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Envoy Air.

Envoy on ORD to PIT lands a B, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 189 flights. The strongest carrier on the route with a full sample, Republic Airways, flew 1,628 at 81.4% on time.

Set against the rest of the country, Envoy's ORD to PIT record is 6 points better than the US average of 77.6%. That gap is worth roughly 56 fewer late arrivals for every thousand flights.

On time

83.2%

Arrivals under 15 minutes late, of 185 completed flights

Avg delay

64 min

Across delayed arrivals only, not all flights

Cancelled

2.12%

National rate is 1.81%

Whole route

74.9%

Every carrier on ORD to PIT, 3,948 flights

These figures cover 189 flights between July 2025 and June 2026. The median arrival is 6 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Carrier by carrier

Envoy against every carrier on ORD to PIT

Envoy flew 189 of the 3,948 flights on ORD to PIT, about 5% of it. Its 83.2% on time is 8 points better than the route as a whole, which runs 74.9%. Ranked by on-time rate it is first of five carriers on the route, where the range runs from Envoy at 83.2% to American at 55.0%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The choice of carrier is not cosmetic here. Republic Airways arrives on time 81.4% of the time; American Airlines manages 55.0%. Sample sizes sit next to every figure, because a two-point gap across 603 flights means less than a ten-point one.

On-time performance by carrier on ORD to PIT
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Air (this page)thin sample	189	83.2%	64 min	2.12%	B
Republic Airways	1,628	81.4%	80 min	2.27%	B
United Airlines	1,291	75.8%	66 min	1.01%	B
SkyWest Airlinesthin sample	237	68.5%	66 min	2.11%	C
American Airlines	603	55.0%	105 min	2.99%	D

The spread between Republic and American is 26 points, wide enough that it should decide the booking. On a hundred trips that is 26 more arrivals inside the on-time window.

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 11 points, against 26 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am1 flights—
8am–11am43 flights76.2%
11am–2pm98 flights85.4%
2pm–5pm33 flights87.5%
5pm–8pm12 flights—
8pm–5am2 flights—

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

The best window here is not the first bank but the 2pm–5pm slot at 87.5% on time, ahead of 8am–11am at 76.2%. 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 11am–2pm window is the busiest, with 98 flights scheduled in it.

Across the year

Envoy on ORD to PIT through the year

Jul–Sep 202576 flights88.0%
Oct–Dec 202536 flights86.1%
Jan–Mar 202676 flights78.1%
Apr–Jun 20261 flights—

Scale runs 70% to 95%. 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 83.2% on time across 189 flights.

Quarter by quarter Envoy on ORD to PIT held fairly steady: 88.0% in Jul–Sep 2025, 86.1% in Oct–Dec 2025 and 78.1% in Jan–Mar 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Across the week, Thursday is the strongest day at 100.0% on time and Sunday the weakest at 74.2%. 26 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 1,990 reported delay minutes.

Late-arriving aircraft
36%
National Airspace System
29%
Carrier
21%
Extreme weather
14%

Extreme weather accounts for 14% 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 2.2 times the usual weather exposure. The split is drawn from 1,990 reported delay minutes.

36% 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 1,990 reported delay minutes here, that single category outweighs weather by 3 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.

Cancellations sit at 2.12% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

5.4% 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 about an hour, which a normal layover absorbs.

At 413 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 2pm–5pm window matters as much as it does.

The return leg is a different operation and performs like one: it runs 78.3% on time across 190 flights, 5 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 5 points of difference.

One caution: this is a thin sample. 189 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 ORD to PIT

Put together: treat all of this as provisional. 189 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 83.2% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 185 completed flights over 12 months sit behind that.

Where to go next

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.

Key figures