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Route guide

Los Angeles Sydney

Los Angeles International (LAX) — Kingsford Smith (SYD)

Westbound 19h shift Best side: right
Distance
12,060 km
Duration
15h
Time-zone shift
19h west
Best window side
right

Overview

LAX to Sydney — one of the longest scheduled commercial routes. Crossing the international dateline confuses the math: the calendar moves forward but the body experiences a westward delay.

Jet lag

Crosses the dateline — calendar shifts a day forward but circadian effect is roughly 5 hours westward. Easier than the raw timezone difference suggests.

Build a LAX→SYD adaptation schedule

Best window side

Outbound westbound across Pacific — right side faces north and gets sunset light through cruise.

Cabin humidity

A380 lower deck has the most stable cabin humidity. 787 is best on smaller aircraft for hydration on a 15-hour flight.

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