Carrier route record

YXCVG→BOS

Republic Airways · Cincinnati to Boston

Flights: 1,557
Period: July 2025 to June 2026
Share of route: 80%
Carriers: 3

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

Republic on CVG to BOS carries a cancellation problem, not just a delay problem: 3.5% of scheduled flights never operate, against 1.8% nationally. Of the ones that do fly, close to three flights in four 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 1,557 flights, with a median arrival 10 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate Republic on CVG to BOS from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

77.4%

Arrivals under 15 minutes late, of 1,502 completed flights

Avg delay

63 min

Across delayed arrivals only, not all flights

Cancelled

3.47%

National rate is 1.81%

Whole route

80.1%

Every carrier on CVG to BOS, 1,942 flights

These figures cover 1,557 flights between July 2025 and June 2026. Beyond the headline rate, 10.2% 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

Republic against every carrier on CVG to BOS

Republic flew 1,557 of the 1,942 flights on CVG to BOS, most of the route. Its 77.4% on time is 3 points worse than the route as a whole, which runs 80.1%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Envoy at 92.5% to Delta at 61.9%. Two 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 CVG to BOS
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Airthin sample	364	92.5%	83 min	0.82%	A+
Republic Airways (this page)	1,557	77.4%	63 min	3.47%	B−
Delta Air Linesthin sample	21	61.9%	55 min	0.00%	D+

Flight by flight

Republic flight numbers on CVG to BOS

Departure window

When Republic runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 27 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am337 flights90.9%
8am–11am25 flights—
11am–2pm347 flights82.2%
2pm–5pm354 flights68.1%
5pm–8pm300 flights63.5%
8pm–5am194 flights81.1%

Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 63.5% on time, against 90.9% for the 5am–8am 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 2pm–5pm window is the busiest, with 354 flights scheduled in it.

Across the year

Republic on CVG to BOS through the year

Darker means more delays. Figures are on-time percentages.August best, October worst

Delays peak in October, when the on-time rate falls to 55.1%. August is the strongest month at 88.9%. Moving a flexible trip across that boundary buys 34 points. October was the busiest month here, with 160 flights.

Across the week, Saturday is the strongest day at 87.9% on time and Thursday the weakest at 72.3%. 16 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Republic runs late on this route

One category carries most of the weight here. National Airspace System accounts for 60% of the 21,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

National Airspace System
60%
Late-arriving aircraft
19%
Carrier
18%
Extreme weather
3%
Security
0%

60% 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 13,000 minutes out of 21,000, against a national NAS share of 21%. The split is drawn from 21,482 reported delay minutes.

Cancellations run at 3.47%, against 1.81% 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.2% 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.

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. 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 82.3% on time across 1,557 flights, 5 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 5 points of difference.

The sample behind these figures is 1,557 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.

What to do with this

Booking Republic on CVG to BOS

Put together: the delay figures matter less here than the 3.47% cancellation rate. A late arrival costs you about an hour; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 1,502 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