✈ CPT → SEA
20H 20M FLIGHT. YOU WILL FORGET WHAT GRASS LOOKS LIKE.
Flight from Cape Town to Seattle
From Cape Town International (CPT), South Africa Africa → Sea-Tac (SEA), USA North America
How long is the flight from Cape Town to Seattle?
A nonstop flight from Cape Town (CPT) to Seattle (SEA) takes about 20 hours 20 minutes, covering a great-circle distance of 10,217 miles (16,443 km). Actual scheduled time varies by airline, routing, and wind — expect ±15 to 30 minutes from this estimate.
Avg flight time
20h 20m
Nonstop, scheduled
Distance
10,217 mi
16,443 km · great-circle
Avg speed
809 km/h
Door-to-door including taxi
Time zones & jet lag
Cape Town timezone
UTC+2
Africa/Johannesburg
Seattle timezone
UTC-7
America/Los_Angeles
Time difference
-9h
9 hours behind
Jet lag (rough)
~6.3d
Westward — easier
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.