OnTimeStats

Historical on-time performance

St. Petersburg to Des Moines

1,126 miData through Dec 2025Source: US DOT · BTS

Flights on PIE–DSM arrive on time 63% of the time over the last 12 months.

On-time rate63%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled6.3%of scheduled flights

based on 32 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Allegiant Air
    On-time63%
    Medianon time
    p9055 min
    Cancel6.3%
    Flights32

Why flights run late

Delay causes

  • Airline11%
  • Weather0%
  • Air traffic (NAS)45%
  • Late aircraft43%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

The monthly trend appears once more than one month of data is loaded. Currently showing a single month.

By season

On-time rate by month

The seasonal pattern appears once multiple months of the year are loaded.

When to fly

Best time to fly PIE → DSM

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

Best time of day

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

  • Mornings88% on time · p90 10 min · 69 flights · limited
  • Middays76% on time · p90 55 min · 244 flights
  • Afternoons71% on time · p90 50 min · 75 flights · limited
  • Overnights61% on time · p90 90 min · 106 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 71% to 76% on time.

  • Saturdays76% on time · p90 45 min · 59 flights · limited
  • Fridays73% on time · p90 55 min · 155 flights · limited
  • Wednesdays71% on time · p90 45 min · 58 flights · limited
  • Mondays71% on time · p90 60 min · 153 flights · limited
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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.