OnTimeStats

Historical on-time performance

Hailey to San Francisco

587 miData through May 2026Source: US DOT · BTS

Flights on SUN–SFO arrive on time 72% of the time over the last 12 months.

On-time rate72%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights

based on 220 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time72%
    Medianon time
    p9075 min
    Cancel0.0%
    Flights220

Why flights run late

Delay causes

  • Airline35%
  • Weather2%
  • Air traffic (NAS)54%
  • Late aircraft9%
  • Security0%

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

When flights don't go

Why flights were cancelled

  • Airline9%
  • Weather91%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 11 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly SUN → SFO

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 57% to 79% on time.

  • Middays79% on time · p90 50 min · 122 flights · limited
  • Afternoons76% on time · p90 65 min · 329 flights
  • Mornings57% on time · p90 70 min · 307 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 61% to 76% on time.

  • Saturdays76% on time · p90 50 min · 164 flights · limited
  • Fridays67% on time · p90 70 min · 108 flights · limited
  • Sundays61% on time · p90 85 min · 145 flights · limited

Keep exploring

Related pages

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.