OnTimeStats

Historical on-time performance

New York to Charleston

636 miData through May 2026Source: US DOT · BTS

Flights on JFK–CHS arrive on time 72% of the time over the last 12 months.

On-time rate72%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled4.0%of scheduled flights

based on 704 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.

  • JetBlue Airways
    On-time73%
    Medianon time
    p9070 min
    Cancel2.4%
    Flights588
  • Republic Airways
    On-time67%
    Medianon time
    p9045 min
    Cancel12.1%
    Flights116

Why flights run late

Delay causes

  • Airline35%
  • Weather1%
  • Air traffic (NAS)25%
  • Late aircraft39%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline29%
  • Weather39%
  • Air traffic (NAS)32%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 28 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly JFK → CHS

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 69% to 82% on time.

  • Middays82% on time · p90 40 min · 741 flights
  • Mornings81% on time · p90 30 min · 1,495 flights
  • Overnights73% on time · p90 85 min · 129 flights · limited
  • Evenings71% on time · p90 50 min · 687 flights
  • Afternoons69% on time · p90 75 min · 782 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 82% on time.

  • Wednesdays82% on time · p90 30 min · 516 flights
  • Tuesdays81% on time · p90 35 min · 521 flights
  • Mondays76% on time · p90 55 min · 561 flights
  • Saturdays76% on time · p90 55 min · 550 flights
  • Thursdays75% on time · p90 45 min · 557 flights
  • Fridays75% on time · p90 55 min · 564 flights
  • Sundays73% on time · p90 55 min · 565 flights

Keep exploring

Related pages

Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.