✈ SEA → JNB
20H 25M IN ECONOMY = A FELONY AGAINST YOURSELF. UPGRADE.
Flight from Seattle to Johannesburg
From Sea-Tac (SEA), USA North America → O.R. Tambo (JNB), South Africa Africa
How long is the flight from Seattle to Johannesburg?
A nonstop flight from Seattle (SEA) to Johannesburg (JNB) takes about 20 hours 25 minutes, covering a great-circle distance of 10,264 miles (16,519 km). Actual scheduled time varies by airline, routing, and wind — expect ±15 to 30 minutes from this estimate.
Avg flight time
20h 25m
Nonstop, scheduled
Distance
10,264 mi
16,519 km · great-circle
Avg speed
809 km/h
Door-to-door including taxi
Time zones & jet lag
Seattle timezone
UTC-7
America/Los_Angeles
Johannesburg timezone
UTC+2
Africa/Johannesburg
Time difference
+9h
9 hours ahead
Jet lag (rough)
~9d
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.