Historical on-time performance
Boise to Spokane
287 miData through May 2026Source: US DOT · BTS
Flights on BOI–GEG arrive on time 86% of the time over the last 12 months.
On-time rate86%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 184 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time86%Medianon timep9020 minCancel0.5%Flights184
Why flights run late
Delay causes
- Airline19%
- Weather2%
- Air traffic (NAS)15%
- Late aircraft64%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 1 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 BOI → GEG
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 75% to 90% on time.
- Mornings90% on time · p90 10 min · 333 flights
- Middays87% on time · p90 20 min · 460 flights
- Afternoons86% on time · p90 20 min · 371 flights
- Overnights82% on time · p90 35 min · 163 flights · limited
- Evenings75% on time · p90 35 min · 165 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 82% to 88% on time.
- Tuesdays88% on time · p90 15 min · 204 flights
- Thursdays88% on time · p90 15 min · 236 flights
- Wednesdays86% on time · p90 20 min · 208 flights
- Saturdays86% on time · p90 25 min · 150 flights · limited
- Mondays85% on time · p90 20 min · 239 flights
- Fridays84% on time · p90 25 min · 238 flights
- Sundays82% on time · p90 30 min · 217 flights
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