Distance From Lyon Heliport to Seattle–Tacoma International Airport

The distance from Lyon Heliport () to Seattle–Tacoma International Airport (SEA) is 988 miles or 1589 kilometers or 858 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Rancho Santa Margarita ( United States ) to Seattle ( United States )?

A one-way nonstop (direct) flight between Rancho Santa Margarita and Seattle takes around 2 hours 16 minutes.

Estimated flight time from Lyon Heliport, Rancho Santa Margarita, United States to Seattle–Tacoma International Airport, Seattle, United States is 2 hours 16 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • - SEA

Kilometers		1589 km
Statute Miles		988 miles
Nautical Miles		858 nm
Avg. Time of Flight		2 hours 16 minutes

Lyon Heliport to Seattle–Tacoma International Airport Flight Route Map - to SEA Flight Path

Location of Lyon Heliport & Seattle–Tacoma International Airport is given below.
Click the map to view Rancho Santa Margarita to Seattle nonstop flight path and travel direction.

Click to see flight route on Google Map between Rancho Santa Margarita, United States and Seattle, United States. .

Nonstop flight route between Rancho Santa Margarita, United States and Seattle, United States.

Time Difference Between the Airports • - SEA

Time difference between Rancho Santa Margarita (United States) and Seattle (United States) is 1 Hours.
Seattle time is 1 Hours ahead of Rancho Santa Margarita.

Location	Local Time
Rancho Santa Margarita (United States)	2026-08-08, 06:20:18 PDT
Seattle (United States)	2026-08-08, 07:20:18 MDT

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Lyon Heliport ( / 4CL1) Rancho Santa Margarita, United States

Destination

Seattle–Tacoma International Airport (SEA / KSEA) Seattle, United States