✈ SEA → KIX
10H 23M, 5,028 MI. THE AIRLINE OWES YOU SOMETHING. THEY WON'T GIVE IT.
Flight from Seattle to Osaka
From Sea-Tac (SEA), USA North America → Kansai (KIX), Japan Asia
How long is the flight from Seattle to Osaka?
A nonstop flight from Seattle (SEA) to Osaka (KIX) takes about 10 hours 23 minutes, covering a great-circle distance of 5,028 miles (8,091 km). Actual scheduled time varies by airline, routing, and wind — expect ±15 to 30 minutes from this estimate.
Avg flight time
10h 23m
Nonstop, scheduled
Distance
5,028 mi
8,091 km · great-circle
Avg speed
779 km/h
Door-to-door including taxi
Time zones & jet lag
Seattle timezone
UTC-7
America/Los_Angeles
Osaka timezone
UTC+9
Asia/Tokyo
Time difference
+16h
16 hours ahead
Jet lag (rough)
~16d
Eastward — worse
CO₂ footprint per passenger
Economy class, single passenger. Source: DEFRA 2024 averages.
This flight emits roughly 3.6× the CO₂ of an equivalent train trip and 0.9× a car driven alone over the same distance.