Historical on-time performance
Spokane to Seattle
224 miData through May 2026Source: US DOT · BTS
Flights on GEG–SEA arrive on time 84% of the time over the last 12 months.
On-time rate84%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 5,151 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time93%Medianon timep905 minCancel0.5%Flights214
- SkyWest AirlinesOn-time87%Medianon timep9020 minCancel1.0%Flights3,089
- Alaska AirlinesOn-time79%Medianon timep9030 minCancel1.1%Flights1,848
Why flights run late
Delay causes
- Airline36%
- Weather18%
- Air traffic (NAS)18%
- Late aircraft27%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline27%
- Weather45%
- Air traffic (NAS)27%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 51 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 GEG → SEA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 88% on time.
- Mornings88% on time · p90 15 min · 6,820 flights
- Afternoons83% on time · p90 20 min · 2,011 flights
- Evenings81% on time · p90 30 min · 2,894 flights
- Middays81% on time · p90 30 min · 3,872 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 82% to 87% on time.
- Tuesdays87% on time · p90 15 min · 2,238 flights
- Saturdays86% on time · p90 20 min · 2,028 flights
- Wednesdays86% on time · p90 20 min · 2,233 flights
- Mondays85% on time · p90 20 min · 2,304 flights
- Sundays83% on time · p90 25 min · 2,259 flights
- Thursdays82% on time · p90 25 min · 2,300 flights
- Fridays82% on time · p90 25 min · 2,291 flights
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