Carrier route record
YXJFK→CHS
Republic Airways · New York to Charleston
- Flights
- 151
- Period
- July 2025 to June 2026
- Share of route
- 19%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Republic Airways.
Republic on JFK to CHS lands a B−, 3 points better than the national rate of 77.6%. About one flight in five 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 151 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 JFK to CHS from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
80.3%
Arrivals under 15 minutes late, of 137 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
9.27%
National rate is 1.81%
Whole route
75.3%
Every carrier on JFK to CHS, 787 flights
These figures cover 151 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 JFK to CHS
Republic flew 151 of the 787 flights on JFK to CHS, about 19% of it. Its 80.3% on time is 5 points better than the route as a whole, which runs 75.3%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Delta at 100.0% to JetBlue at 74.1%. 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 | 2 | 100.0% | — | 0.00% | A+ |
| Republic Airways (this page)thin sample | 151 | 80.3% | 64 min | 9.27% | B− |
| JetBlue Airways | 634 | 74.1% | 73 min | 3.79% | C− |
Departure window
When Republic 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 151 flights.
- 5am–8am—
- 8am–11am76 flights76.8%
- 11am–2pm12 flights—
- 2pm–5pm1 flights—
- 5pm–8pm24 flights—
- 8pm–5am38 flights84.8%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is the strongest at 84.8% on time. The full set of windows spans 8 points.
Across the year
Republic on JFK to CHS through the year
- Oct–Dec 202522 flights—
- Jan–Mar 2026129 flights79.1%
Scale runs 70% to 85%. 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 80.3% on time across 151 flights.
Split by quarter, Republic on JFK to CHS logged 22 flights in Oct–Dec 2025 and 129 flights in Jan–Mar 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 80.3% annual figure is the one to use.
Delay causes
Why Republic runs late on this route
One category carries most of the weight here. Carrier accounts for 47% of the 1,733 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.
- 47%Carrier
- 35%Late-arriving aircraft
- 12%National Airspace System
- 7%Extreme weather
35% 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 1,733 reported delay minutes here, that single category outweighs weather by 5 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 1,733 reported delay minutes.
The largest share of delay minutes, 47%, 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 807 of the 1,733 delay minutes reported here.
Cancellations run at 9.27%, against 1.81% nationally. That is about one flight in ten 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
5.8% 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 636 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 77.9% on time across 150 flights, within 2 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. 151 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 Republic on JFK to CHS
Put together: the delay figures matter less here than the 9.27% cancellation rate. A late arrival costs you about an hour; a cancelled flight costs you the day. Book the 8pm–5am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 137 completed flights over 12 months sit behind that.
Related
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.