Carrier route record
MQBOS→CVG
Envoy Air · Boston to Cincinnati
- Flights
- 369
- Period
- September 2025 to August 2026
- Share of route
- 18%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Envoy Air.
Envoy on BOS to CVG sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 369 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.3%, so Envoy on BOS to CVG runs 8 points behind the country as a whole. Across a thousand flights that is about 75 extra late arrivals.
Key figures
On time
69.8%
Arrivals under 15 minutes late, of 361 completed flights
Avg delay
90 min
Across delayed arrivals only, not all flights
Cancelled
1.90%
National rate is 1.89%
Whole route
78.9%
Every carrier on BOS to CVG, 2,060 flights
These figures cover 369 flights between September 2025 and August 2026. Beyond the headline rate, 15.8% 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 BOS to CVG
Envoy flew 369 of the 2,060 flights on BOS to CVG, about 18% of it. Its 69.8% on time is 9 points worse than the route as a whole, which runs 78.9%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Delta at 94.4% to Envoy at 69.8%. One 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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Linesthin sample | 18 | 94.4% | 61 min | 0.00% | A+ |
| Republic Airways | 1,673 | 80.7% | 56 min | 3.17% | B− |
| Envoy Air (this page) | 369 | 69.8% | 90 min | 1.90% | C |
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 is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 369 flights.
- 5am–8am—
- 8am–11am—
- 11am–2pm10 flights—
- 2pm–5pm67 flights65.2%
- 5pm–8pm287 flights70.1%
- 8pm–5am5 flights—
Scale runs 55% to 75%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 70.1% on time. The full set of windows spans 5 points.
Across the year
Envoy on BOS to CVG through the year
July is the worst month at 63.3% on time, 10 points below April, the best at 73.3%. 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. August was the busiest month here, with 35 flights.
Across the week, Friday is the strongest day at 75.0% on time and Saturday the weakest at 66.7%, a spread of 8 points.
Arrival by arrival
How late Envoy on BOS to CVG runs when it is late
Envoy on BOS to CVG often beats the schedule: 116 of 361 completed flights, 32%, arrived 15 minutes or more early. When Envoy on BOS to CVG is late it tends to be very late: 57 of its 109 late arrivals were an hour or more behind, and 26 were two hours or more.
- 15+ min early116 flights32.1%
- Within 15 min136 flights37.7%
- 15–29 min late30 flights8.3%
- 30–59 min late22 flights6.1%
- 1–2 hours late31 flights8.6%
- 2+ hours late26 flights7.2%
Scale runs 0% to 100%.
Share of 361 completed flights by arrival against schedule.
23 of 120 late departures made up the time and arrived on time, 19% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for Envoy on BOS to CVG
The latest arrival of the period was on 8 August 2026, 13 hours 44 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across August, July, September, October and June, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 8 August 2026 | 13 hours 44 minutes | National Airspace System |
| 31 July 2026 | 13 hours 19 minutes | Late-arriving aircraft |
| 6 September 2025 | 4 hours 37 minutes | Extreme weather |
| 15 October 2025 | 3 hours 30 minutes | Carrier |
| 18 June 2026 | 3 hours 20 minutes | Late-arriving aircraft |
Delay causes
Why Envoy runs late on this route
Late-arriving aircraft accounts for 69% of the 9,757 delay minutes carriers reported here, and the remaining four split what is left.
- 69%Late-arriving aircraft
- 17%National Airspace System
- 11%Carrier
- 3%Extreme weather
69% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 9,757 reported delay minutes here, that single category outweighs weather by 23 to one. The split is drawn from 9,757 reported delay minutes.
Cancellations sit at 1.90% against a national 1.89%, which is ordinary. Diversions add another 0.27%.
Connections and stage length
What a delay here costs
15.8% 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.
The 752 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 is a different operation and performs like one: it runs 92.1% on time across 369 flights, 22 points above 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 22 points of difference.
One caution: this is a thin sample. 369 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 BOS to CVG
Put together: treat all of this as provisional. 369 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 69.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 361 completed flights over 12 months sit behind that.
Related
Where to go next
- BOS to CVG, every carrier
- Envoy on CVG to BOS, the return leg
- Republic Airways on BOS to CVG80.7%
- Envoy Air network-wide record
- Boston Logan International (BOS) delay statistics
- Cincinnati/Northern Kentucky International (CVG) delay statistics
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
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.