OnTimeStats

Historical on-time performance

Washington to Burlington

442 miData through Dec 2025Source: US DOT · BTS

Flights on IAD–BTV arrive on time 80% of the time over the last 12 months.

On-time rate80%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled3.1%of scheduled flights

based on 621 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Republic Airways
    On-time80%
    Medianon time
    p9030 min
    Cancel3.1%
    Flights621

Why flights run late

Delay causes

  • Airline28%
  • Weather22%
  • Air traffic (NAS)19%
  • Late aircraft31%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly IAD → BTV

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 68% to 89% on time.

  • Mornings89% on time · p90 10 min · 548 flights
  • Middays87% on time · p90 15 min · 460 flights
  • Overnights79% on time · p90 45 min · 323 flights
  • Evenings72% on time · p90 50 min · 239 flights
  • Afternoons68% on time · p90 55 min · 73 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 80% to 87% on time.

  • Mondays87% on time · p90 15 min · 254 flights
  • Tuesdays86% on time · p90 20 min · 237 flights
  • Sundays84% on time · p90 25 min · 215 flights
  • Thursdays84% on time · p90 25 min · 262 flights
  • Wednesdays81% on time · p90 35 min · 228 flights
  • Fridays81% on time · p90 45 min · 247 flights
  • Saturdays80% on time · p90 35 min · 200 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.