Distance From St Charles Airport to Seattle–Tacoma International Airport

The distance from St Charles Airport () to Seattle–Tacoma International Airport (SEA) is 1696 miles or 2729 kilometers or 1473 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 St Charles ( United States ) to Seattle ( United States )?

A one-way nonstop (direct) flight between St Charles and Seattle takes around 3 hours 53 minutes.

Estimated flight time from St Charles Airport, St Charles, United States to Seattle–Tacoma International Airport, Seattle, United States is 3 hours 53 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		2729 km
Statute Miles		1696 miles
Nautical Miles		1473 nm
Avg. Time of Flight		3 hours 53 minutes

St Charles Airport to Seattle–Tacoma International Airport Flight Route Map - to SEA Flight Path

Location of St Charles Airport & Seattle–Tacoma International Airport is given below.
Click the map to view St Charles to Seattle nonstop flight path and travel direction.

Click to see flight route on Google Map between St Charles, United States and Seattle, United States. .

Nonstop flight route between St Charles, United States and Seattle, United States.

Time Difference Between the Airports • - SEA

Time difference between St Charles (United States) and Seattle (United States) is 2 Hours.
Seattle time is 2 Hours behind St Charles.

Location	Local Time
St Charles (United States)	2025-01-15, 12:36:11 EST
Seattle (United States)	2025-01-15, 10:36:11 MST

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

St Charles Airport ( / ) St Charles, United States

Destination

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