Historical on-time performance
Lewiston to Seattle
262 miData through May 2026Source: US DOT · BTS
Flights on LWS–SEA arrive on time 91% of the time over the last 12 months.
On-time rate91%arrived within 15 min
p90 delay5 min1 in 10 flights is worse (tail risk)
Cancelled0.3%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-time91%Medianon timep905 minCancel0.3%Flights336
Why flights run late
Delay causes
- Airline65%
- Weather31%
- Air traffic (NAS)4%
- Late aircraft0%
- Security0%
Most delay minutes here are attributed to Airline.
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 LWS → SEA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best day of week
On-time rates are fairly even by day on this route — ranging from 85% to 91% on time.
- Sundays91% on time · p90 10 min · 138 flights · limited
- Mondays89% on time · p90 10 min · 138 flights · limited
- Saturdays88% on time · p90 15 min · 138 flights · limited
- Fridays86% on time · p90 15 min · 138 flights · limited
- Tuesdays86% on time · p90 20 min · 138 flights · limited
- Thursdays86% on time · p90 25 min · 138 flights · limited
- Wednesdays85% on time · p90 15 min · 137 flights · limited
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