Route profile
CHS→JFK
Flight reliability, delays and best times to fly from Charleston to New York, 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 11% of comparable major US routes (4,598 compared)
Calculated from 3,798 flights. How this is calculated · What counts as on time
CHS → JFK arrives on time 78.8% of the time; the return trip, JFK → CHS, arrives on time 79.4% of the time.
CHS → JFK spends 26.7 minutes on the ground on a 636-mile trip: 16.4 minutes from pushback to wheels-up at CHS and 10.3 minutes from touchdown to gate at JFK.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What sets this route apart
Where CHS to JFK differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
CHS to JFK is at its best against routes of similar length for flights scheduled at 4 PM: 82.3% arrive on time, 12.1 points ahead of the 70.2% those routes manage at that hour. Against all other routes the gap is 11.6 points.
CHS to JFK struggles most at 10 AM: 73.7% of its flights scheduled then arrive on time, 10.5 points behind the 84.2% on routes of similar length at the same hour. Against all other routes the gap is 9 points.
In December, CHS to JFK runs 7.9 points below routes of similar length, 71.1% on time to 79.0%. Against all other routes the gap is 7.7 points.
November is kinder to CHS to JFK than to routes of similar length: 88.2% on time against 83.7%, 4.5 points better. Against all other routes the gap is 4.8 points.
Endeavor Air does better on CHS to JFK than on its routes of similar length: 87.7% on time here, 84.5% there, 3.2 points apart. Against all other routes the gap is 3.5 points.
CHS to JFK against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 4 PM departures | 82.3% | routes of similar length | 70.2% | +12.1 pts | 248 here, 124,621 there |
| Hour: 10 AM departures | 73.7% | routes of similar length | 84.2% | −10.5 pts | 228 here, 124,963 there |
| Month: December | 71.1% | routes of similar length | 79.0% | −7.9 pts | 325 here, 169,719 there |
| Month: November | 88.2% | routes of similar length | 83.7% | +4.5 pts | 339 here, 169,475 there |
| Airline: Endeavor Air | 87.7% | routes of similar length | 84.5% | +3.2 pts | 1,417 here, 25,448 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 CHS → JFK flights are cancelled
July 2023 – July 2026
CHS → JFK cancelled 156 of 3,798 scheduled flights — about 1 in every 24. The reason filed most often was the air traffic system, 46.2% of the cancellations coded on this route — about 1 in every 53 scheduled flights.
Share of cancellations
Of 156 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.
72 cancellations, 46.2% of the total.
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
47 cancellations, 30.1% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
37 cancellations, 23.7% 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.
156 coded cancellations were recorded on CHS → JFK; the section appears from 50.
When it goes wrong
July 2023 – July 2026
56 min late
against a median of 8 min early
CHS → JFK has an average that understates its risk: a typical arrival is 8 min early, but the worst tenth are 64 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 3,798 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at JFK after arriving from CHS.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 34% | Likely to miss |
| 45 min | 21% | High risk |
| 60 min | 15% | Some risk |
| 90 min | 9.1% | Some risk |
| 120 min | 6.0% | Some 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 4.11% of the time and diverts 0.21% of the time, which a late arrival never shows up in.
Chance of missing is the share of 3,634 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 56 minutes late (90th-percentile gate arrival delay), over 3,798 operations.
Any other layover length: connection checker.
Best time to fly
CHS → JFK flights departing 5–9 AM arrived on time 91.7% of the time, against 61.9% for 6–9 PM departures, a gap of 29.8 percentage points.
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 88.1% on time from 180 flights
- 7 AM: 93.2% on time from 567 flights
- 8 AM to 9 AM: too few flights to score
- 10 AM: 73.7% on time from 239 flights
- 11 AM: 81.6% on time from 878 flights
- 12 PM: 73.1% on time from 330 flights
- 1 PM to 3 PM: too few flights to score
- 4 PM: 82.3% on time from 272 flights
- 5 PM: 77.8% on time from 406 flights
- 6 PM: 65.3% on time from 435 flights
- 7 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why CHS → JFK 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
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for CHS → JFK. Only delays of 15 minutes or more are attributed. What the five causes mean
Late-arriving aircraft is the largest cause on CHS → JFK, at 46.2%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 91.7% of the time and 6–9 PM departures 61.9%.
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 | 1,952 | 71.6% | 3.74% | -4 min | 12.9% |
| Endeavor Air | 1,483 | 87.7% | 4.32% | -12 min | 5.1% |
| Republic Airways | 360 | 81.5% | 5.28% | -10 min | 6.7% |
JetBlue flew 51.4% of the 3,795 flights listed. Republic Airways cancelled 5.28% of its flights here against 3.74% for JetBlue.
Endeavor Air arrived on time 16.1 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 Sunday the least, a gap of 7.7 percentage points.
By month
- Jan: 78.5%
- Feb: 78.7%
- Mar: 82.8%
- Apr: 81.0%
- May: 74.0%
- Jun: 70.3%
- Jul: 68.8%
- Aug: 79.7%
- Sep: 86.7%
- Oct: 86.0%
- Nov: 88.2%
- Dec: 71.1%
July is historically the weakest month and November the strongest, a spread of 19.4 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 75.0% from 155 flights
- August 2023: 86.7% from 155 flights
- September 2023: 80.9% from 125 flights
- October 2023: 84.7% from 124 flights
- November 2023: 90.6% from 127 flights
- December 2023: too few flights to score (116)
- January 2024: too few flights to score (117)
- February 2024: 87.6% from 130 flights
- March 2024: 88.9% from 155 flights
- April 2024: 84.1% from 150 flights
- May 2024: 75.0% from 155 flights
- June 2024: 75.4% from 150 flights
- July 2024: 75.0% from 155 flights
- August 2024: 75.0% from 155 flights
- September 2024: 89.9% from 139 flights
- October 2024: 90.9% from 143 flights
- November 2024: 91.2% from 147 flights
- December 2024: 69.6% from 136 flights
- January 2025: too few flights to score (74)
- February 2025: too few flights to score (69)
- March 2025: too few flights to score (65)
- 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 (67)
- December 2025: too few flights to score (79)
- January 2026: too few flights to score (83)
- February 2026: too few flights to score (79)
- March 2026: too few flights to score (64)
- April 2026: too few flights to score (65)
- 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 74.1% against 77.1% in the 12 months before — declining by 3.0 percentage points.
Data and methodology
Calculated by FlyerIntel from 3,798 CHS → JFK 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