Historical on-time performance
Spokane to Sacramento
649 miData through Dec 2025Source: US DOT · BTS
Flights on GEG–SMF 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)
Cancelled0.1%of scheduled flights
based on 678 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time86%Medianon timep9020 minCancel0.1%Flights678
Why flights run late
Delay causes
- Airline36%
- Weather0%
- Air traffic (NAS)6%
- Late aircraft51%
- Security7%
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 GEG → SMF
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 — 97% on time.
- Mornings97% on time · p90 on time · 433 flights
- Middays86% on time · p90 20 min · 673 flights
- Afternoons82% on time · p90 25 min · 284 flights
- Evenings79% on time · p90 35 min · 517 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 83% to 90% on time.
- Saturdays90% on time · p90 10 min · 185 flights · limited
- Tuesdays88% on time · p90 15 min · 282 flights
- Wednesdays88% on time · p90 15 min · 277 flights
- Sundays85% on time · p90 25 min · 289 flights
- Thursdays84% on time · p90 20 min · 297 flights
- Mondays84% on time · p90 20 min · 301 flights
- Fridays83% on time · p90 20 min · 302 flights
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