✈ SYD → ORD
18H 27M, 9,235 MILES. YOUR ANCESTORS WALKED LESS THAN THIS.
Flight from Sydney to Chicago
From Kingsford Smith (SYD), Australia Oceania → O'Hare (ORD), USA North America
How long is the flight from Sydney to Chicago?
A nonstop flight from Sydney (SYD) to Chicago (ORD) takes about 18 hours 27 minutes, covering a great-circle distance of 9,235 miles (14,862 km). Actual scheduled time varies by airline, routing, and wind — expect ±15 to 30 minutes from this estimate.
Avg flight time
18h 27m
Nonstop, scheduled
Distance
9,235 mi
14,862 km · great-circle
Avg speed
806 km/h
Door-to-door including taxi
Time zones & jet lag
Sydney timezone
UTC+10
Australia/Sydney
Chicago timezone
UTC-5
America/Chicago
Time difference
-15h
15 hours behind
Jet lag (rough)
~10.5d
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.