Historical on-time performance
Atlanta to Boise
1,838 miData through May 2026Source: US DOT · BTS
Flights on ATL–BOI arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights
based on 521 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time77%Medianon timep9035 minCancel1.5%Flights521
Why flights run late
Delay causes
- Airline49%
- Weather3%
- Air traffic (NAS)22%
- Late aircraft26%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline63%
- Weather38%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 8 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 ATL → BOI
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 67% to 87% on time.
- Mornings87% on time · p90 15 min · 265 flights
- Middays86% on time · p90 15 min · 831 flights
- Overnights67% on time · p90 55 min · 275 flights
- Evenings67% on time · p90 60 min · 138 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 85% on time.
- Saturdays85% on time · p90 20 min · 171 flights · limited
- Tuesdays84% on time · p90 20 min · 181 flights · limited
- Thursdays83% on time · p90 20 min · 249 flights
- Wednesdays82% on time · p90 25 min · 189 flights · limited
- Mondays81% on time · p90 35 min · 215 flights
- Fridays80% on time · p90 25 min · 251 flights
- Sundays75% on time · p90 40 min · 253 flights
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