OnTimeStats

Historical on-time performance

San Juan to Tampa

1,237 miData through May 2026Source: US DOT · BTS

Flights on SJU–TPA arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights

based on 1,307 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlinesbest
    On-time83%
    Medianon time
    p9020 min
    Cancel0.6%
    Flights471
  • JetBlue Airways
    On-time76%
    Medianon time
    p9050 min
    Cancel0.5%
    Flights594
  • Frontier Airlines
    On-time74%
    Medianon time
    p9050 min
    Cancel2.8%
    Flights211
  • Spirit Airlines
    On-time45%
    Median10 min
    p9065 min
    Cancel16.1%
    Flights31

Why flights run late

Delay causes

  • Airline29%
  • Weather0%
  • Air traffic (NAS)7%
  • Late aircraft63%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline29%
  • Weather35%
  • Air traffic (NAS)35%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 17 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 SJU → TPA

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 — 90% on time.

  • Mornings90% on time · p90 10 min · 1,332 flights
  • Middays77% on time · p90 35 min · 578 flights
  • Early mornings72% on time · p90 55 min · 297 flights
  • Afternoons69% on time · p90 55 min · 848 flights
  • Evenings66% on time · p90 80 min · 699 flights
  • Overnights63% on time · p90 100 min · 873 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 77% on time.

  • Tuesdays77% on time · p90 55 min · 566 flights
  • Wednesdays76% on time · p90 45 min · 591 flights
  • Thursdays75% on time · p90 55 min · 642 flights
  • Mondays75% on time · p90 50 min · 676 flights
  • Fridays74% on time · p90 50 min · 678 flights
  • Sundays73% on time · p90 60 min · 721 flights
  • Saturdays73% on time · p90 60 min · 753 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.