OnTimeRoutes
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Alaska Airlines FLL to SEA on-time performance

Alaska Airlines nonstop flights from Fort Lauderdale to Seattle · Aug 2025 – Jul 2026

On-time arrivals
67%
arrived < 15 min late
Cancelled
1.1%
5 flights
Avg arrival delay
19 min
51 min when late
Rank on route
#2 of 2
route average 71% on time

Key facts

  • Alaska Airlines flights on FLL to SEA arrived on time 67% of the time in Aug 2025 – Jul 2026.
  • 1.1% were cancelled, and 7% arrived an hour or more late.
  • That ranks #2 of 2 airlines on this route, which averaged 71% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (40%).

On-time trend by month

30%65%100%July 2025: 66.7% on time, 3.2% cancelledJul ’25August 2025: 45.2% on time, 0.0% cancelledAug ’25September 2025: 70.0% on time, 0.0% cancelledSep ’25October 2025: 74.2% on time, 0.0% cancelledOct ’25November 2025: 62.9% on time, 2.8% cancelledNov ’25December 2025: 48.3% on time, 0.0% cancelledDec ’25January 2026: 69.4% on time, 2.7% cancelledJan ’26February 2026: 57.9% on time, 2.5% cancelledFeb ’26March 2026: 65.4% on time, 1.8% cancelledMar ’26April 2026: 78.7% on time, 2.1% cancelledApr ’26May 2026: 90.0% on time, 0.0% cancelledMay ’26June 2026: 83.3% on time, 0.0% cancelledJun ’26July 2026: 71.0% on time, 0.0% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft40%
  • Air traffic control & airport congestion35%
  • Airline (crew, maintenance, cleaning, fueling)19%
  • Extreme weather6%
  • Security1%

Other airlines on FLL to SEA

462 Alaska Airlines flights tracked on this route; 5 cancelled, 8 diverted.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.