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

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

Distance from Seattle to Unalaska

There are several ways to calculate the distance from Seattle to Unalaska. 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 Seattle to Unalaska?

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

What is the time difference between Seattle and Unalaska?

The time difference between Seattle and Unalaska is 2 hours. Unalaska is 2 hours behind Seattle.

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

On average, flying from Seattle to Unalaska 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 Seattle to Unalaska

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

Airport information

Origin	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

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