Flights Fort Lauderdale → Seattle
FLL → SEA
How long is the flight from Fort Lauderdale to Seattle?
The flight from Fort Lauderdale (FLL) to Seattle (SEA) takes 6h 1m on average. That is the median time recorded across 2 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
The flight route from Fort Lauderdale to Seattle has a 74% on-time performance rate, with an average delay of 16.9 minutes when flights are not on time. Over the course of a year, this route sees 232 total flights, serving one of the world's busiest airports in terms of annual passenger traffic, Seattle-Tacoma International Airport, which handles approximately 52.7 million passengers annually.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Fort Lauderdale (FLL) → Seattle (SEA) route is operated by Alaska Airlines. Across 537 flights monitored in recent months, 79% arrived on time (within 15 min of schedule), with an average delay of 11 minutes. The cancellation rate is 5.40%. FlightGuard's average computed risk is 28.5/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Seattle the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from Fort Lauderdale the average ATFM delay is 5.5 minutes.
Heading to Seattle: what to expect in this direction
Flying from Fort Lauderdale (FLL) to Seattle (SEA) heads north-west for about 4,368 km, a flight time of roughly 6h 1m.
Departures from Fort Lauderdale on this leg cluster in the overnight window: about 51% of FLL-SEA flights take off then.
Air-traffic congestion: departing Fort Lauderdale the average ATFM delay is 5.5 min (atfm); arriving into Seattle it is 5.5 min (atfm).
Across 537 tracked FLL-SEA flights, 79% left on time with an average delay of 11 min and a 5.4% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Alaska Airlines (AS) | 85% | -1 min | 0.5% |
Airlines operating FLL-SEA
Airports
Frequently asked questions about FLL-SEA
The flight from Fort Lauderdale (FLL) to Seattle (SEA) takes 6h 1m on average. That is the median time recorded across 2 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Fort Lauderdale (FLL) -> Seattle (SEA) route, on-time performance is 79% with an average delay of 11 minutes, based on 537 tracked flights.
The cancellation rate on Fort Lauderdale-Seattle is 5.40% across 537 monitored flights.
The route is operated by 1 airline: Alaska Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Seattle, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
