✈ BOS → SYD
20H 6M FROM BOSTON TO SYDNEY. THIS IS NOT TRAVEL. THIS IS ENDURANCE.
Flight from Boston to Sydney
From Logan (BOS), USA North America → Kingsford Smith (SYD), Australia Oceania
How long is the flight from Boston to Sydney?
A nonstop flight from Boston (BOS) to Sydney (SYD) takes about 20 hours 6 minutes, covering a great-circle distance of 10,097 miles (16,250 km). Actual scheduled time varies by airline, routing, and wind — expect ±15 to 30 minutes from this estimate.
Avg flight time
20h 6m
Nonstop, scheduled
Distance
10,097 mi
16,250 km · great-circle
Avg speed
809 km/h
Door-to-door including taxi
Time zones & jet lag
Boston timezone
UTC-4
America/New_York
Sydney timezone
UTC+10
Australia/Sydney
Time difference
+14h
14 hours ahead
Jet lag (rough)
~14d
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.