Historical on-time performance
Cleveland to Seattle
2,021 miData through May 2026Source: US DOT · BTS
Flights on CLE–SEA arrive on time 71% of the time over the last 12 months.
On-time rate71%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.8%of scheduled flights
based on 334 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Alaska AirlinesOn-time71%Medianon timep9040 minCancel1.8%Flights334
Why flights run late
Delay causes
- Airline34%
- Weather3%
- Air traffic (NAS)16%
- Late aircraft46%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline67%
- Weather33%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 6 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 CLE → 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 — 81% on time.
- Mornings81% on time · p90 25 min · 444 flights
- Evenings73% on time · p90 35 min · 824 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 80% on time.
- Tuesdays80% on time · p90 30 min · 178 flights · limited
- Thursdays76% on time · p90 35 min · 197 flights · limited
- Saturdays76% on time · p90 35 min · 164 flights · limited
- Wednesdays75% on time · p90 30 min · 184 flights · limited
- Sundays73% on time · p90 35 min · 206 flights
- Fridays71% on time · p90 45 min · 206 flights
- Mondays69% on time · p90 50 min · 201 flights
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