OnTimeStats

Historical on-time performance

Boston to Myrtle Beach

738 miData through Dec 2025Source: US DOT · BTS

Flights on BOS–MYR arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled3.1%of scheduled flights

based on 541 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Spirit Airlines
    On-time74%
    Medianon time
    p9050 min
    Cancel3.1%
    Flights541

Why flights run late

Delay causes

  • Airline22%
  • Weather1%
  • Air traffic (NAS)45%
  • Late aircraft32%
  • 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 BOS → MYR

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 15 min · 791 flights
  • Evenings76% on time · p90 40 min · 95 flights · limited
  • Middays75% on time · p90 55 min · 503 flights
  • Overnights66% on time · p90 95 min · 173 flights · limited
  • Afternoons63% on time · p90 75 min · 244 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 84% on time.

  • Wednesdays84% on time · p90 25 min · 215 flights
  • Tuesdays82% on time · p90 40 min · 203 flights
  • Saturdays82% on time · p90 30 min · 317 flights
  • Thursdays77% on time · p90 40 min · 256 flights
  • Fridays76% on time · p90 55 min · 253 flights
  • Sundays76% on time · p90 50 min · 306 flights
  • Mondays72% on time · p90 55 min · 256 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.