Historical on-time performance
Fort Lauderdale to Seattle
2,717 miData through Dec 2025Source: US DOT · BTS
Flights on FLL–SEA arrive on time 66% of the time over the last 12 months.
On-time rate66%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 811 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Alaska AirlinesOn-time64%Median5 minp9045 minCancel1.0%Flights504
- Delta Air LinesOn-time70%Medianon timep9050 minCancel1.3%Flights307
Why flights run late
Delay causes
- Airline29%
- Weather4%
- Air traffic (NAS)29%
- Late aircraft37%
- Security1%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly FLL → SEA
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Middays are the most reliable time of day to fly this route — 83% on time.
- Middays83% on time · p90 30 min · 206 flights
- Mornings72% on time · p90 30 min · 643 flights
- Evenings68% on time · p90 60 min · 1,858 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 60% to 73% on time.
- Tuesdays73% on time · p90 35 min · 382 flights
- Thursdays73% on time · p90 45 min · 386 flights
- Fridays73% on time · p90 45 min · 393 flights
- Saturdays72% on time · p90 50 min · 389 flights
- Wednesdays70% on time · p90 55 min · 384 flights
- Mondays68% on time · p90 50 min · 398 flights
- Sundays60% on time · p90 80 min · 397 flights
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