OnTimeStats

Historical on-time performance

Denver to Syracuse

1,492 miData through Dec 2025Source: US DOT · BTS

Flights on DEN–SYR arrive on time 68% of the time over the last 12 months.

On-time rate68%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights

based on 413 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlines
    On-time68%
    Medianon time
    p9070 min
    Cancel0.0%
    Flights413

Why flights run late

Delay causes

  • Airline27%
  • Weather1%
  • Air traffic (NAS)15%
  • Late aircraft57%
  • 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 DEN → SYR

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 — 78% on time.

  • Mornings78% on time · p90 35 min · 227 flights
  • Evenings66% on time · p90 70 min · 969 flights
  • Afternoons64% on time · p90 50 min · 64 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 65% to 70% on time.

  • Saturdays70% on time · p90 65 min · 173 flights · limited
  • Tuesdays70% on time · p90 55 min · 163 flights · limited
  • Sundays70% on time · p90 50 min · 176 flights · limited
  • Fridays70% on time · p90 65 min · 207 flights
  • Wednesdays68% on time · p90 60 min · 208 flights
  • Mondays65% on time · p90 65 min · 210 flights
  • Thursdays65% on time · p90 55 min · 172 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.