Carrier route record
YXBOS→CLT
Republic Airways · Boston to Charlotte
- Flights
- 1,199
- Period
- July 2025 to June 2026
- Share of route
- 30%
- Carriers
- 4
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Republic Airways.
Republic on BOS to CLT carries a cancellation problem, not just a delay problem: 3.4% of scheduled flights never operate, against 1.8% 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 1,199 flights, with a median arrival 12 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate Republic on BOS to CLT from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
80.5%
Arrivals under 15 minutes late, of 1,155 completed flights
Avg delay
67 min
Across delayed arrivals only, not all flights
Cancelled
3.42%
National rate is 1.81%
Whole route
82.6%
Every carrier on BOS to CLT, 4,017 flights
These figures cover 1,199 flights between July 2025 and June 2026. The median arrival is 12 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
Republic against every carrier on BOS to CLT
Republic flew 1,199 of the 4,017 flights on BOS to CLT, about 30% of it. Its 80.5% on time is 2 points worse than the route as a whole, which runs 82.6%. Ranked by on-time rate it is number three of four carriers on the route, where the range runs from Envoy at 100.0% to Spirit at 71.1%. 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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Envoy Airthin sample | 5 | 100.0% | — | 20.00% | A− |
| American Airlines | 2,735 | 83.8% | 90 min | 2.34% | B |
| Republic Airways (this page) | 1,199 | 80.5% | 67 min | 3.42% | B− |
| Spirit Airlinesthin sample | 78 | 71.1% | 85 min | 2.56% | C |
Flight by flight
Republic flight numbers on BOS to CLT
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 34 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–8am208 flights93.1%
- 8am–11am179 flights88.5%
- 11am–2pm166 flights89.0%
- 2pm–5pm316 flights79.4%
- 5pm–8pm283 flights65.7%
- 8pm–5am47 flights58.7%
Scale runs 50% to 100%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 58.7% on time, against 93.1% 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 316 flights scheduled in it.
Across the year
Republic on BOS to CLT through the year
April is the best month on the calendar at 87.6% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. May was the busiest month here, with 112 flights.
Across the week, Saturday is the strongest day at 90.5% on time and Sunday the weakest at 70.3%. 20 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Republic 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 15,000 reported delay minutes.
- 40%Late-arriving aircraft
- 39%Carrier
- 20%National Airspace System
- 2%Extreme weather
40% 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 15,000 reported delay minutes here, that single category outweighs weather by 23 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 15,005 reported delay minutes.
The largest share of delay minutes, 39%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 5,777 of the 15,000 delay minutes reported here.
Cancellations run at 3.42%, 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
6.9% 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.
The 728 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 runs 81.9% on time across 1,199 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 1,199 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 BOS to CLT
Put together: the delay figures matter less here than the 3.42% 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. 1,155 completed flights over 12 months sit behind that.
Related
Where to go next
- BOS to CLT, every carrier
- Republic on CLT to BOS, the return leg
- American Airlines on BOS to CLT83.8%
- Republic Airways network-wide record
- Boston Logan International (BOS) delay statistics
- Charlotte Douglas International (CLT) 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.