JetSetAuthority

Route · Trans-Pacific

LAX Los Angeles ⇄ SYD Sydney

Los Angeles International Airport (United States) and Sydney Kingsford Smith International Airport (Australia): great-circle distance, estimated scheduled flight time each way, time difference and jet lag.

Distance12,061 km7,494 mi6,512 nautical miles
LAX → SYD15 h 15 minestimated block time
SYD → LAX14 h 15 minestimated block time
Clock change+18 hSydney vs Los Angeles, today
Great-circle route from Los Angeles (LAX) to Sydney (SYD)LAXLos AngelesSYDSydney
The shortest path over the Earth’s surface (great circle), drawn on a Natural Earth projection. Real flight paths bend around weather, winds and closed airspace.

Flight time each way

LAX → SYD

15 h 15 min

Estimated gate-to-gate scheduled time. Initial heading 241° (WSW).

Leave Los Angeles Sat 7 Nov, 10:00 local → arrive Sydney Sun 8 Nov, 20:15 local +1 day.

SYD → LAX

14 h 15 min

Estimated gate-to-gate scheduled time. Initial heading 61° (ENE).

Leave Sydney Sat 7 Nov, 10:00 local → arrive Los Angeles Sat 7 Nov, 05:15 local.

SYD-bound flights are the slower direction by about 60 minutes in our estimate: the route runs mostly east–west through latitudes where the prevailing westerly winds at cruise height are strong, so heading east rides a tailwind and heading west fights a headwind. How we estimate it.

Distance

Great-circle distance12,061 km · 7,494 mi · 6,512 nmi
Initial heading241° (WSW) from LAX; 61° (ENE) from SYD
Farthest from the equator33.9°S
Crossesthe equator and the 180th meridian (International Date Line area)
Share of the longest possible trip60% of the 20,015 km to the far side of the Earth

Time zones and jet lag

LAXAmerica/Los_Angeles — UTC−7 now; UTC−8 standard time, UTC−7 during daylight saving time
SYDAustralia/Sydney — UTC+11 now; UTC+10 standard time, UTC+11 during daylight saving time
DifferenceSydney is 18 hours ahead of Los Angeles today; +19 h in January and +17 h in July because daylight saving time starts and ends on different dates (or not at all).

Jet lag, flying LAX → SYD. The clock change is 18 hours, but to your body that is a shift of 6 hours the other way. Your body clock has to move 6 hours later, like a westward trip. A common rule of thumb is that the body clock adjusts by roughly one time zone a day, so expect up to about 6 days to fully adjust. Shifting later (as here) is usually the easier direction; evening daylight at the destination helps. Flying the other way, the shift is reversed.

General information, not medical advice.

The two airports

More routes from LAX and SYD

Routes of a similar length

Need a different pair? The flight-time calculator works for any two of 3,245 airports. Not covered: which airlines fly this route, schedules, fares and live status — that data is proprietary and we don’t guess it.

Photos on airport pages are credited there. Estimates are rounded to 5 minutes; typical error about 13 minutes (validation).