OnTimeStats

Historical on-time performance

Boise to Atlanta

1,838 miData through Dec 2025Source: US DOT · BTS

Flights on BOI–ATL arrive on time 76% of the time over the last 12 months.

On-time rate76%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights

based on 485 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Delta Air Lines
    On-time76%
    Medianon time
    p9045 min
    Cancel1.6%
    Flights485

Why flights run late

Delay causes

  • Airline41%
  • Weather0%
  • Air traffic (NAS)25%
  • Late aircraft33%
  • Security0%

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 BOI → ATL

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 73% to 82% on time.

  • Middays82% on time · p90 30 min · 869 flights
  • Afternoons78% on time · p90 30 min · 227 flights
  • Overnights73% on time · p90 55 min · 338 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 82% on time.

  • Tuesdays82% on time · p90 25 min · 170 flights · limited
  • Thursdays82% on time · p90 35 min · 236 flights
  • Saturdays81% on time · p90 35 min · 169 flights · limited
  • Wednesdays80% on time · p90 40 min · 178 flights · limited
  • Fridays78% on time · p90 30 min · 237 flights
  • Mondays78% on time · p90 25 min · 204 flights
  • Sundays72% on time · p90 45 min · 240 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.