OnTimeStats

Historical on-time performance

Grand Rapids to St. Petersburg

1,044 miData through Dec 2025Source: US DOT · BTS

Flights on GRR–PIE arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights

based on 296 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Allegiant Air
    On-time77%
    Medianon time
    p9035 min
    Cancel0.0%
    Flights296

Why flights run late

Delay causes

  • Airline15%
  • Weather13%
  • Air traffic (NAS)42%
  • Late aircraft30%
  • Security0%

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

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly GRR → 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 70% to 82% on time.

  • Mornings82% on time · p90 30 min · 455 flights
  • Middays82% on time · p90 25 min · 165 flights · limited
  • Afternoons70% on time · p90 65 min · 363 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 68% to 84% on time.

  • Tuesdays84% on time · p90 25 min · 70 flights · limited
  • Fridays81% on time · p90 30 min · 186 flights · limited
  • Mondays81% on time · p90 35 min · 185 flights · limited
  • Saturdays80% on time · p90 30 min · 161 flights · limited
  • Wednesdays78% on time · p90 35 min · 116 flights · limited
  • Thursdays75% on time · p90 40 min · 168 flights · limited
  • Sundays68% on time · p90 85 min · 170 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.