OnTimeStats

Historical on-time performance

San Francisco to Tampa

2,393 miData through Dec 2025Source: US DOT · BTS

Flights on SFO–TPA arrive on time 88% of the time over the last 12 months.

On-time rate88%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights

based on 657 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlines
    On-time88%
    Medianon time
    p9015 min
    Cancel0.2%
    Flights657

Why flights run late

Delay causes

  • Airline37%
  • Weather0%
  • Air traffic (NAS)34%
  • Late aircraft29%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly SFO → TPA

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 75% to 84% on time.

  • Mornings84% on time · p90 20 min · 939 flights
  • Overnights81% on time · p90 25 min · 752 flights
  • Middays75% on time · p90 55 min · 151 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 77% to 88% on time.

  • Mondays88% on time · p90 15 min · 264 flights
  • Tuesdays87% on time · p90 20 min · 245 flights
  • Fridays82% on time · p90 25 min · 275 flights
  • Wednesdays81% on time · p90 30 min · 258 flights
  • Saturdays80% on time · p90 35 min · 277 flights
  • Thursdays79% on time · p90 35 min · 272 flights
  • Sundays77% on time · p90 30 min · 271 flights
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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.