OnTimeStats

Historical on-time performance

Charlotte to St. Thomas

1,520 miData through Dec 2025Source: US DOT · BTS

Flights on CLT–STT arrive on time 82% of the time over the last 12 months.

On-time rate82%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights

based on 557 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • American Airlines
    On-time82%
    Medianon time
    p9025 min
    Cancel0.7%
    Flights557

Why flights run late

Delay causes

  • Airline45%
  • Weather1%
  • Air traffic (NAS)21%
  • Late aircraft33%
  • Security1%

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 CLT → STT

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 — 84% on time.

  • Mornings84% on time · p90 25 min · 896 flights
  • Middays79% on time · p90 30 min · 783 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 77% to 86% on time.

  • Tuesdays86% on time · p90 20 min · 221 flights
  • Thursdays84% on time · p90 20 min · 232 flights
  • Fridays82% on time · p90 20 min · 238 flights
  • Mondays82% on time · p90 25 min · 247 flights
  • Sundays82% on time · p90 25 min · 245 flights
  • Wednesdays81% on time · p90 35 min · 223 flights
  • Saturdays77% on time · p90 35 min · 273 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.