OnTimeStats

Historical on-time performance

Miami to New York

1,090 miData through May 2026Source: US DOT · BTS

Flights on MIA–JFK arrive on time 68% of the time over the last 12 months.

On-time rate68%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled3.1%of scheduled flights

based on 4,459 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • Frontier Airlines
    On-time71%
    Medianon time
    p9060 min
    Cancel2.2%
    Flights184
  • Delta Air Lines
    On-time68%
    Medianon time
    p9070 min
    Cancel3.3%
    Flights1,620
  • American Airlines
    On-time68%
    Medianon time
    p9065 min
    Cancel3.0%
    Flights2,655

Why flights run late

Delay causes

  • Airline32%
  • Weather6%
  • Air traffic (NAS)25%
  • Late aircraft37%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline24%
  • Weather73%
  • Air traffic (NAS)4%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 136 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 MIA → JFK

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

Best time of day

Mornings are the most reliable time of day to fly this route — 88% on time.

  • Mornings88% on time · p90 15 min · 4,378 flights
  • Middays74% on time · p90 55 min · 3,134 flights
  • Afternoons64% on time · p90 95 min · 2,603 flights
  • Overnights58% on time · p90 85 min · 1,694 flights
  • Evenings54% on time · p90 110 min · 3,760 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 62% to 75% on time.

  • Wednesdays75% on time · p90 65 min · 2,183 flights
  • Tuesdays73% on time · p90 65 min · 2,193 flights
  • Fridays71% on time · p90 65 min · 2,262 flights
  • Mondays70% on time · p90 70 min · 2,252 flights
  • Saturdays70% on time · p90 70 min · 2,161 flights
  • Thursdays69% on time · p90 80 min · 2,245 flights
  • Sundays62% on time · p90 95 min · 2,273 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.