OnTimeStats

Historical on-time performance

New York to Miami

1,096 miData through May 2026Source: US DOT · BTS

Flights on LGA–MIA arrive on time 67% of the time over the last 12 months.

On-time rate67%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled4.1%of scheduled flights

based on 5,851 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.

  • American Airlines
    On-time68%
    Medianon time
    p9075 min
    Cancel3.9%
    Flights3,545
  • Delta Air Lines
    On-time66%
    Medianon time
    p9075 min
    Cancel3.9%
    Flights1,915
  • Spirit Airlines
    On-time64%
    Medianon time
    p9075 min
    Cancel6.6%
    Flights391

Why flights run late

Delay causes

  • Airline22%
  • Weather5%
  • Air traffic (NAS)27%
  • Late aircraft46%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline22%
  • Weather67%
  • Air traffic (NAS)11%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 237 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 LGA → MIA

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 — 83% on time.

  • Mornings83% on time · p90 25 min · 6,290 flights
  • Middays73% on time · p90 60 min · 3,931 flights
  • Overnights67% on time · p90 80 min · 827 flights
  • Evenings61% on time · p90 95 min · 3,891 flights
  • Afternoons60% on time · p90 85 min · 2,511 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 65% to 77% on time.

  • Saturdays77% on time · p90 50 min · 2,206 flights
  • Tuesdays76% on time · p90 50 min · 2,546 flights
  • Wednesdays74% on time · p90 50 min · 2,531 flights
  • Fridays73% on time · p90 55 min · 2,556 flights
  • Thursdays70% on time · p90 75 min · 2,533 flights
  • Mondays68% on time · p90 75 min · 2,537 flights
  • Sundays65% on time · p90 75 min · 2,541 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.