Air Miles Calculator

Distance between Seattle, WA (SEA) and Kōchi (KCZ)

Flight distance from Seattle to Kōchi (Seattle–Tacoma International Airport – Kōchi Airport) is 5146 miles / 8282 kilometers / 4472 nautical miles. Estimated flight time is 10 hours 14 minutes.

Map of flight path from Seattle to Kōchi.

Shortest flight path between Seattle–Tacoma International Airport (SEA) and Kōchi Airport (KCZ).

How far is Kōchi from Seattle?

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

Vincenty's formula (applied above)
  • 5145.936 miles
  • 8281.581 kilometers
  • 4471.696 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
  • 5133.919 miles
  • 8262.242 kilometers
  • 4461.254 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).

Airport information


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

B Kōchi Airport
City: Kōchi
Country: Japan Flag of Japan
IATA Code: KCZ
ICAO Code: RJOK
Coordinates: 33°32′45″N, 133°40′8″E

Time difference and current local times

The time difference between Seattle and Kōchi is 17 hours. Kōchi is 17 hours ahead of Seattle.

Time Difference

Seattle, WA

 PST

Kōchi

 JST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 603 kg (1 329 pounds).

Frequent Flyer Miles Calculator

Seattle (SEA) → Kōchi (KCZ).

Distance:
5146
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
5146

Round trip?