Historical on-time performance
San Francisco to Spokane
733 miData through Dec 2025Source: US DOT · BTS
Flights on SFO–GEG arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights
based on 890 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time80%Medianon timep9035 minCancel0.2%Flights890
Why flights run late
Delay causes
- Airline30%
- Weather2%
- Air traffic (NAS)35%
- Late aircraft34%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SFO → GEG
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 75% to 88% on time.
- Mornings88% on time · p90 20 min · 138 flights · limited
- Evenings85% on time · p90 25 min · 334 flights
- Afternoons81% on time · p90 25 min · 386 flights
- Middays81% on time · p90 35 min · 769 flights
- Overnights75% on time · p90 50 min · 446 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 85% on time.
- Tuesdays85% on time · p90 30 min · 298 flights
- Saturdays83% on time · p90 30 min · 278 flights
- Wednesdays83% on time · p90 20 min · 306 flights
- Mondays82% on time · p90 45 min · 303 flights
- Sundays80% on time · p90 30 min · 304 flights
- Thursdays80% on time · p90 35 min · 293 flights
- Fridays74% on time · p90 45 min · 291 flights
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