Distance From New Castle Airport to Seattle–Tacoma International Airport, ILG - SEA Distance

The distance from New Castle Airport (ILG) to Seattle–Tacoma International Airport (SEA) is 2362 miles or 3801 kilometers or 2051 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 Wilmington ( United States ) to Seattle ( United States )?

A one-way nonstop (direct) flight between Wilmington and Seattle takes around 5 hours 25 minutes.

Estimated flight time from New Castle Airport, Wilmington, United States to Seattle–Tacoma International Airport, Seattle, United States is 5 hours 25 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 • ILG - SEA

Kilometers		3801 km
Statute Miles		2362 miles
Nautical Miles		2051 nm
Avg. Time of Flight		5 hours 25 minutes

New Castle Airport to Seattle–Tacoma International Airport Flight Route Map - ILG to SEA Flight Path

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

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

Nonstop flight route between Wilmington, United States and Seattle, United States.

Time Difference Between the Airports • ILG - SEA

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

Location	Local Time
Wilmington (United States)	2025-12-15, 21:36:53 EST
Seattle (United States)	2025-12-15, 19:36:53 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

New Castle Airport (ILG / KILG) Wilmington, United States

Destination

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