Carrier route record

MQORD→GSP

Envoy Air · Chicago to Greer

Flights: 865
Period: September 2025 to August 2026
Share of route: 46%
Carriers: 6

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

Envoy on ORD to GSP carries a cancellation problem, not just a delay problem: 3.6% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about four flights in five arrive on time, worth a B− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 865 flights, with a median arrival 9 minutes early.

The US average over the same twelve months is 77.3%, so there is little to separate Envoy on ORD to GSP from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

78.3%

Arrivals under 15 minutes late, of 833 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

3.58%

National rate is 1.89%

Whole route

74.2%

Every carrier on ORD to GSP, 1,872 flights

These figures cover 865 flights between September 2025 and August 2026. Beyond the headline rate, 8.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Carrier by carrier

Envoy against every carrier on ORD to GSP

Envoy flew 865 of the 1,872 flights on ORD to GSP, about 46% of it. Its 78.3% on time is 4 points better than the route as a whole, which runs 74.2%. Ranked by on-time rate it is number three of six carriers on the route, where the range runs from United at 100.0% to PSA at 54.0%. Four of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on ORD to GSP
Airline	Flights	On time	Avg delay	Cancelled	Grade
United Airlinesthin sample	4	100.0%	—	0.00%	A+
Republic Airwaysthin sample	255	81.1%	75 min	4.31%	B−
Envoy Air (this page)	865	78.3%	72 min	3.58%	B−
SkyWest Airlines	630	69.0%	66 min	3.33%	C−
American Airlinesthin sample	54	59.2%	53 min	9.26%	D−
PSA Airlinesthin sample	64	54.0%	123 min	0.00%	F+

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 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 21 points, against half a point between the best and worst carrier.

5am–8am—
8am–11am310 flights88.9%
11am–2pm35 flights67.6%
2pm–5pm195 flights73.3%
5pm–8pm148 flights75.4%
8pm–5am177 flights68.9%

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

The weak window here is the middle of the day, not the evening: 11am–2pm runs 67.6% on time against 88.9% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8am–11am window is the busiest, with 310 flights scheduled in it.

Across the year

Envoy on ORD to GSP through the year

Darker means more delays. Figures are on-time percentages.September best, January worst

January is the weak month at 59.6% on time, against 92.5% in September. 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. May was the busiest month here, with 93 flights.

Across the week, Saturday is the strongest day at 83.1% on time and Wednesday the weakest at 74.6%, a spread of 9 points.

Arrival by arrival

How late Envoy on ORD to GSP runs when it is late

Envoy on ORD to GSP often beats the schedule: 319 of 833 completed flights, 38%, arrived 15 minutes or more early. The 181 late arrivals split 57 under half an hour, 51 between 30 and 60 minutes, and 73 an hour or more.

15+ min early319 flights38.3%
Within 15 min333 flights40.0%
15–29 min late57 flights6.8%
30–59 min late51 flights6.1%
1–2 hours late44 flights5.3%
2+ hours late29 flights3.5%

Scale runs 0% to 100%.

Share of 833 completed flights by arrival against schedule.

31 of 159 late departures made up the time and arrived on time, 19% of them. In the other direction, 53 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 GSP.

The worst days

Worst days for Envoy on ORD to GSP

The latest arrival of the period was on 30 July 2026, 10 hours 2 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across July, May and January, with no single month standing out.

The latest arrivals of Envoy on ORD to GSP in the period
Date	Arrived late by	Largest filed cause
30 July 2026	10 hours 2 minutes	National Airspace System
29 July 2026	10 hours 1 minute	National Airspace System
4 May 2026	4 hours 33 minutes	Extreme weather
1 May 2026	4 hours 31 minutes	Late-arriving aircraft
3 January 2026	4 hours 22 minutes	Carrier

Delay causes

Why Envoy runs late on this route

Late-arriving aircraft accounts for 48% of the 13,000 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
48%
National Airspace System
32%
Carrier
14%
Extreme weather
7%

48% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 13,000 reported delay minutes here, that single category outweighs weather by 7 to one. The split is drawn from 12,989 reported delay minutes.

The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 88.9% on time here.

Cancellations run at 3.58%, against 1.89% nationally. That is about one flight in 30 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

8.8% of arrivals land an hour or more late, close to the national 8.3%, so 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 577 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.

The return leg runs 75.4% on time across 862 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. 865 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 GSP

Put together: the delay figures matter less here than the 3.58% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 833 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures