Map of flight path from Seattle to Osaka.
Shortest flight path between Seattle–Tacoma International Airport (SEA) and Itami Airport (ITM).
How far is Osaka from Seattle?
There are several ways to calculate distances between Seattle and Osaka. Here are two common methods:Vincenty's formula (applied above)
- 5014.224 miles
- 8069.611 kilometers
- 4357.242 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
- 5002.211 miles
- 8050.279 kilometers
- 4346.803 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).
Time difference and current local times
The time difference between Seattle and Osaka is 17 hours. Osaka is 17 hours ahead of Seattle.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 586 kg (1 291 pounds).
Frequent Flyer Miles Calculator
Seattle (SEA) → Osaka (ITM).