How far is Seattle, WA, from Unalaska, AK?

The distance between Unalaska (Unalaska Airport) and Seattle (Seattle–Tacoma International Airport) is 1959 miles / 3153 kilometers / 1703 nautical miles.

Distance from Unalaska to Seattle

There are several ways to calculate the distance from Unalaska to Seattle. Here are two standard methods:

Vincenty's formula (applied above)

• 1959.279 miles
• 3153.154 kilometers
• 1702.567 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula

• 1953.451 miles
• 3143.774 kilometers
• 1697.502 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

How long does it take to fly from Unalaska to Seattle?

The estimated flight time from Unalaska Airport to Seattle–Tacoma International Airport is 4 hours and 12 minutes.

What is the time difference between Unalaska and Seattle?

The time difference between Unalaska and Seattle is 2 hours. Seattle is 2 hours ahead of Unalaska.

Flight carbon footprint between Unalaska Airport (DUT) and Seattle–Tacoma International Airport (SEA)

On average, flying from Unalaska to Seattle generates about 214 kg of CO2 per passenger, and 214 kilograms equals 471 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Unalaska to Seattle

See the map of the shortest flight path between Unalaska Airport (DUT) and Seattle–Tacoma International Airport (SEA).

Airport information

Origin	Unalaska Airport
City:	Unalaska, AK
Country:	United States
IATA Code:	DUT
ICAO Code:	PADU
Coordinates:	53°54′0″N, 166°32′38″W

Destination	Seattle–Tacoma International Airport
City:	Seattle, WA
Country:	United States
IATA Code:	SEA
ICAO Code:	KSEA
Coordinates:	47°26′56″N, 122°18′32″W