OnTimeStats

Historical on-time performance

Des Moines to St. Petersburg

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

Flights on DSM–PIE arrive on time 66% of the time over the last 12 months.

On-time rate66%arrived within 15 min
p90 delay65 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-time66%
    Medianon time
    p9065 min
    Cancel6.3%
    Flights32

Why flights run late

Delay causes

  • Airline37%
  • Weather0%
  • Air traffic (NAS)41%
  • Late aircraft22%
  • 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 DSM → PIE

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 58% to 85% on time.

  • Middays85% on time · p90 20 min · 71 flights · limited
  • Mornings77% on time · p90 45 min · 284 flights
  • Afternoons58% on time · p90 85 min · 139 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 68% to 81% on time.

  • Wednesdays81% on time · p90 35 min · 58 flights · limited
  • Fridays72% on time · p90 50 min · 155 flights · limited
  • Mondays71% on time · p90 65 min · 153 flights · limited
  • Saturdays68% on time · p90 135 min · 59 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.