Route profile
JFK→CHS
Flight reliability, delays and best times to fly from New York to Charleston, 636 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 18% of comparable major US routes (4,598 compared)
Calculated from 3,801 flights. How this is calculated · What counts as on time
JFK → CHS arrives on time 79.4% of the time; the return trip, CHS → JFK, arrives on time 78.8% of the time.
JFK → CHS spends 36.0 minutes on the ground on a 636-mile trip: 27.7 minutes from pushback to wheels-up at JFK and 8.3 minutes from touchdown to gate at CHS.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What sets this route apart
Where JFK to CHS differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
JFK to CHS is at its best against routes of similar length for flights scheduled at 7 PM: 81.0% arrive on time, 13.1 points ahead of the 67.9% those routes manage at that hour. Against all other routes the gap is 13.2 points.
JFK to CHS struggles most at 9 AM: 76.0% of its flights scheduled then arrive on time, 8.9 points behind the 84.9% on routes of similar length at the same hour. Against all other routes the gap is 8.3 points.
May is kinder to JFK to CHS than to routes of similar length: 82.0% on time against 74.3%, 7.7 points better. Against all other routes the gap is 6.8 points.
In February, JFK to CHS runs 5.1 points below routes of similar length, 76.6% on time to 81.7%. Against all other routes the gap is 4.9 points.
JFK to CHS against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 7 PM departures | 81.0% | routes of similar length | 67.9% | +13.1 pts | 195 here, 122,357 there |
| Hour: 9 AM departures | 76.0% | routes of similar length | 84.9% | −8.9 pts | 288 here, 119,788 there |
| Month: May | 82.0% | routes of similar length | 74.3% | +7.7 pts | 278 here, 179,837 there |
| Month: February | 76.6% | routes of similar length | 81.7% | −5.1 pts | 269 here, 148,923 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 636 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
Why JFK → CHS flights are cancelled
July 2023 – July 2026
JFK → CHS cancelled 147 of 3,801 scheduled flights — about 1 in every 26. The reason filed most often was the air traffic system, 47.6% of the cancellations coded on this route — about 1 in every 54 scheduled flights.
Share of cancellations
Of 147 cancelled departures carrying a reason code.
What each reason means
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
70 cancellations, 47.6% of the total.
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
47 cancellations, 32.0% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
30 cancellations, 20.4% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
147 coded cancellations were recorded on JFK → CHS; the section appears from 50.
When it goes wrong
July 2023 – July 2026
51 min late
against a median of 8 min early
Percentiles over 3,801 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at CHS after arriving from JFK.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 35% | Likely to miss |
| 45 min | 20% | High risk |
| 60 min | 14% | Some risk |
| 90 min | 8.1% | Some risk |
| 120 min | 4.5% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 3.87% of the time and diverts 0.13% of the time, which a late arrival never shows up in.
Chance of missing is the share of 3,649 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 51 minutes late (90th-percentile gate arrival delay), over 3,801 operations.
Any other layover length: connection checker.
Best time to fly
JFK → CHS flights departing 5–9 AM arrived on time 83.7% of the time, against 67.1% for 3–6 PM departures, a gap of 16.6 percentage points.
By departure window
By departure hour
- 12 AM to 6 AM: too few flights to score
- 7 AM: 80.7% on time from 199 flights
- 8 AM: 84.0% on time from 960 flights
- 9 AM: 76.0% on time from 297 flights
- 10 AM to 11 AM: too few flights to score
- 12 PM: 79.2% on time from 179 flights
- 1 PM: 87.4% on time from 378 flights
- 2 PM: 78.5% on time from 359 flights
- 3 PM: 65.9% on time from 372 flights
- 4 PM: too few flights to score
- 5 PM: 72.1% on time from 166 flights
- 6 PM: 80.4% on time from 300 flights
- 7 PM: 81.0% on time from 204 flights
- 8 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why JFK → CHS runs late
July 2023 – July 2026
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for JFK → CHS. Only delays of 15 minutes or more are attributed. What the five causes mean
Late-arriving aircraft is the largest cause on JFK → CHS, at 37.7%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 83.7% of the time and 3–6 PM departures 67.1%.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| JetBlue | 1,954 | 74.9% | 3.48% | -5 min | 10.6% |
| Endeavor Air | 1,482 | 85.1% | 4.18% | -11 min | 5.6% |
| Republic Airways | 362 | 81.2% | 4.70% | -10 min | 7.0% |
JetBlue flew 51.4% of the 3,798 flights listed. Republic Airways cancelled 4.70% of its flights here against 3.48% for JetBlue.
Endeavor Air arrived on time 10.2 percentage points more often than JetBlue on this route.
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Thursday the least, a gap of 8.3 percentage points.
By month
- Jan: 76.4%
- Feb: 76.6%
- Mar: 80.8%
- Apr: 83.6%
- May: 82.0%
- Jun: 72.2%
- Jul: 69.5%
- Aug: 78.6%
- Sep: 87.1%
- Oct: 83.8%
- Nov: 88.0%
- Dec: 74.8%
July is historically the weakest month and November the strongest, a spread of 18.5 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 74.4% from 155 flights
- August 2023: 86.7% from 155 flights
- September 2023: 79.3% from 125 flights
- October 2023: 83.9% from 124 flights
- November 2023: 92.9% from 127 flights
- December 2023: too few flights to score (116)
- January 2024: too few flights to score (117)
- February 2024: 85.3% from 131 flights
- March 2024: 85.7% from 154 flights
- April 2024: 83.6% from 149 flights
- May 2024: 81.6% from 155 flights
- June 2024: 78.8% from 150 flights
- July 2024: 72.6% from 155 flights
- August 2024: 71.5% from 155 flights
- September 2024: 89.9% from 139 flights
- October 2024: 88.2% from 144 flights
- November 2024: 92.5% from 147 flights
- December 2024: 68.9% from 136 flights
- January 2025: too few flights to score (73)
- February 2025: too few flights to score (69)
- March 2025: too few flights to score (67)
- April 2025: too few flights to score (86)
- May 2025: too few flights to score (63)
- June 2025: too few flights to score (60)
- July 2025: too few flights to score (62)
- August 2025: too few flights to score (54)
- September 2025: too few flights to score (48)
- October 2025: too few flights to score (62)
- November 2025: too few flights to score (68)
- December 2025: too few flights to score (79)
- January 2026: too few flights to score (84)
- February 2026: too few flights to score (79)
- March 2026: too few flights to score (63)
- April 2026: too few flights to score (66)
- May 2026: too few flights to score (63)
- June 2026: too few flights to score (59)
- July 2026: too few flights to score (62)
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 75.0% against 77.8% in the 12 months before — declining by 2.8 percentage points.
Data and methodology
Calculated by FlyerIntel from 3,801 JFK → CHS flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed