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Route guide

Hong Kong New York

Hong Kong International (HKG) — John F. Kennedy (JFK)

Westbound
Distance
12,990 km
Duration
16h
TZ shift
12h west
Best side
right

Overview

Hong Kong to JFK — Cathay Pacific's flagship Atlantic-meets-Pacific polar route. One of the longest US-Asia flights still scheduled; the westbound direction is the only thing making it manageable.

Jet lag

Crosses the dateline — calendar shows 12 hours, body reads it as ~12 hours westward. Stay up into the New York evening; anchor afternoon light; expect 4-5 days for full adjustment.

Estimated recovery

Without intervention ~8 days
With timed light + melatonin ~5 days

Estimates only — based on ~1 day per time zone west, compressed roughly 40% with a timed protocol. See how long jet lag actually lasts .

Build a HKG→JFK adaptation schedule

Best window side

Westbound polar routing — the right (north) side is the shadier pick through the long daylit cruise.

Typical economy row (3-3-3)

Left

Middle

Best · Right

The right window is the calmer pick on this route. For sleep, the window itself matters more than the side — see how to sleep on a long-haul. For the exact rows and seat letters on this aircraft, use the seat picker.

Cabin atmosphere

Cathay's A350-1000 is the comfort pick on this 16-hour westbound. 777-300ER is workable but drier — the difference compounds over a flight this long.

Expected cabin humidity at cruise

This route's typical aircraft ~15-20%
Indoor air at home ~40-60%

Composite-fuselage aircraft (787, A350) run higher humidity than older aluminum-fuselage types. See what the A350 actually fixes.

What to pack for this route

Read before you fly

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