SEA to FLL flight delays & on-time performance
Nonstop flights from Seattle–Tacoma International Airport to Fort Lauderdale Hollywood International Airport · 2,717 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SEA or FLL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Seattle (SEA) to Fort Lauderdale (FLL) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 0.7% were cancelled, and 5% arrived an hour or more late.
- Alaska Airlines was the most punctual airline here (80% on time); Delta Air Lines was the least (75%).
- Departures scheduled around 12pm did best (86% on time); around 9pm did worst (60%).
- Wednesday was the most reliable day to fly (90% on time) and Sunday the least (69%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (41%).
Which airline is most on time from SEA to FLL?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Alaska Airlines | 80% | 0.2% | 10 min | 3.7% | 462 |
| Delta Air Lines | 75% | 1.4% | 13 min | 5.6% | 364 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am86%99 flights
- 8am83%330 flights
- 11am65%188 flights
- 12pm86%85 flights
- 1pm67%25 flights
- 9pm60%43 flights
- 10pm81%53 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday81%0.8% cancelled
- Tuesday84%0.0% cancelled
- Wednesday90%0.0% cancelled
- Thursday76%0.8% cancelled
- Friday70%0.8% cancelled
- Saturday77%0.9% cancelled
- Sunday69%1.7% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)41%
- Air traffic control & airport congestion37%
- Late-arriving aircraft22%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)83%
- Extreme weather17%
- Air traffic control & airport congestion0%
- Security0%
SEA to FLL: common questions
- How often are SEA to FLL flights on time?
- 78% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Seattle to Fort Lauderdale cancelled?
- 0.7% of scheduled flights were cancelled (6 of 826).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 46 min behind schedule on average, and 4.5% of flights were an hour or more late.
- How long is taxi time at SEA?
- Flights on this route spent 24 min taxiing from the gate to takeoff on average.
Related routes
Return trip: FLL to SEA — 71% on time
More flights from Seattle
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SEA → FLL, nonstop flights by US airlines that report to the DOT. How we calculate this.