BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
FLL→SEA

Fort Lauderdale, FL (FLL) to Seattle, WA (SEA) flight delay odds

67.8% of 826 official scheduled FLL-to-SEA flights arrived on time; 17.6% arrived at least 30 minutes late and 1.5% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
67.8%arrived on time
17.6%30+ min late
1.5%cancelled
826scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.6%all scheduled flights
120+ minutes late3.0%all scheduled flights
Diverted1.3%did not reach as scheduled
Average arrival+12.6 mincompleted flights

Which departure time was most reliable for FLL to SEA?

Among qualifying FLL-to-SEA departure window results, Early morning had the highest on-time rate: 71.5% of 376 flights. Evening was lowest at 64.7% across 450 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning37671.5%13.8%1.1%
Evening45064.7%20.7%1.8%

Which weekday was most reliable for FLL to SEA?

Among qualifying FLL-to-SEA weekday results, Thursday had the highest on-time rate: 75.2% of 117 flights. Sunday was lowest at 56.9% across 116 flights.

DayFlightsOn time30+ minCancelled
Monday12168.6%17.4%1.7%
Tuesday11766.7%19.7%1.7%
Wednesday11468.4%19.3%0.9%
Thursday11775.2%12.0%0.0%
Friday12070.0%15.8%0.0%
Saturday12168.6%14.0%3.3%
Sunday11656.9%25.0%2.6%

Which airline was most reliable for FLL to SEA?

Among qualifying FLL-to-SEA airline results, Delta Air Lines had the highest on-time rate: 72.0% of 364 flights. Alaska Airlines was lowest at 64.5% across 462 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines46264.5%18.8%1.3%
Delta Air Lines36472.0%15.9%1.6%

Which month was most reliable for FLL to SEA?

Among qualifying FLL-to-SEA month results, June 2026 had the highest on-time rate: 91.7% of 60 flights. December 2025 was lowest at 46.2% across 93 flights.

MonthFlightsOn time30+ minCancelled
July 20256258.1%27.4%4.8%
August 20256254.8%27.4%0.0%
September 20256073.3%18.3%1.7%
October 20256279.0%17.7%0.0%
November 20256569.2%12.3%1.5%
December 20259346.2%26.9%1.1%
January 20266866.2%19.1%2.9%
February 20266854.4%22.1%1.5%
March 20268665.1%16.3%2.3%
April 20267878.2%11.5%1.3%
May 20266288.7%1.6%0.0%
June 20266091.7%6.7%0.0%

What drove FLL to SEA delay minutes?

Late aircraft was the largest recorded FLL-to-SEA delay category, accounting for 43.3% of 15,703 BTS-attributed delay minutes during July 2025–June 2026.

Airline26.8%
Late aircraft43.3%
National airspace25.9%
Weather3.7%
Security0.2%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.