Air Miles Calculator

Distance between Seattle, WA (BFI) and Unalaska, AK (DUT)

Distance from Seattle to Unalaska (Boeing Field – Unalaska Airport) is 1957 miles / 3149 kilometers / 1700 nautical miles.

How far is Unalaska from Seattle?

There are several ways to calculate distances between Seattle and Unalaska. Here are two common methods:

Vincenty's formula (applied above)
  • 1956.790 miles
  • 3149.149 kilometers
  • 1700.404 nautical miles

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

Haversine formula
  • 1950.958 miles
  • 3139.763 kilometers
  • 1695.337 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).

Flight duration

Estimated flight time from Boeing Field (BFI) to Unalaska Airport (DUT) is 4 hours 12 minutes.

Time difference and current local times

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

Time Difference

Seattle
Unalaska

Seattle, WA

 PDT

Unalaska, AK

 HDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 216 kg (476 pounds).

Airport information


A Boeing Field
City: Seattle, WA
Country: United States Flag of United States
IATA Code: BFI
ICAO Code: KBFI
Coordinates: 47°31′47″N, 122°18′7″W

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

Seattle to Unalaska flight path

Shortest flight path between Boeing Field (BFI) and Unalaska Airport (DUT).

Frequent Flyer Miles Calculator

Seattle (BFI) → Unalaska (DUT).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
1957
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1957

Round trip?