Historical on-time performance
Seattle to Lewiston
262 miData through Dec 2025Source: US DOT · BTS
Flights on SEA–LWS arrive on time 92% of the time over the last 12 months.
On-time rate92%arrived within 15 min
p90 delay5 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 336 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time92%Medianon timep905 minCancel0.0%Flights336
Why flights run late
Delay causes
- Airline65%
- Weather32%
- Air traffic (NAS)3%
- Late aircraft0%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SEA → LWS
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 85% to 90% on time.
- Evenings90% on time · p90 15 min · 606 flights
- Overnights85% on time · p90 25 min · 208 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 84% to 92% on time.
- Mondays92% on time · p90 10 min · 117 flights · limited
- Tuesdays91% on time · p90 5 min · 116 flights · limited
- Saturdays91% on time · p90 10 min · 116 flights · limited
- Wednesdays90% on time · p90 10 min · 117 flights · limited
- Sundays87% on time · p90 20 min · 117 flights · limited
- Fridays84% on time · p90 20 min · 116 flights · limited
- Thursdays84% on time · p90 25 min · 116 flights · limited
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