Historical on-time performance
Fort Lauderdale to Seattle
2,717 miData through May 2026Source: US DOT · BTS
Flights on FLL–SEA arrive on time 65% of the time over the last 12 months.
On-time rate65%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights
based on 769 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time70%Medianon timep9050 minCancel2.0%Flights307
- Alaska AirlinesOn-time62%Medianon timep9050 minCancel1.5%Flights462
Why flights run late
Delay causes
- Airline28%
- Weather4%
- Air traffic (NAS)26%
- Late aircraft41%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline69%
- Weather31%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 13 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 FLL → SEA
All airlines · rolling 36 months (2023-06 .. 2026-05).
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
- Mornings71% on time · p90 35 min · 726 flights
- Evenings68% on time · p90 55 min · 1,720 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 62% to 72% on time.
- Thursdays72% on time · p90 40 min · 379 flights
- Fridays72% on time · p90 45 min · 387 flights
- Tuesdays71% on time · p90 40 min · 366 flights
- Saturdays71% on time · p90 45 min · 383 flights
- Wednesdays71% on time · p90 50 min · 367 flights
- Mondays69% on time · p90 45 min · 387 flights
- Sundays62% on time · p90 65 min · 383 flights
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