JetSetAuthority

Route · Trans-Pacific

DFW Dallas–Fort Worth ⇄ SYD Sydney

Dallas Fort Worth 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.

Distance13,808 km8,580 mi7,456 nautical miles
DFW → SYD17 h 25 minestimated block time
SYD → DFW16 h 10 minestimated block time
Clock change+16 hSydney vs Dallas–Fort Worth, today
Great-circle route from Dallas–Fort Worth (DFW) to Sydney (SYD)DFWDallas–Fort WorthSYDSydney
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

DFW → SYD

17 h 25 min

Estimated gate-to-gate scheduled time. Initial heading 249° (WSW).

Leave Dallas–Fort Worth Sat 7 Nov, 10:00 local → arrive Sydney Sun 8 Nov, 20:25 local +1 day.

SYD → DFW

16 h 10 min

Estimated gate-to-gate scheduled time. Initial heading 70° (ENE).

Leave Sydney Sat 7 Nov, 10:00 local → arrive Dallas–Fort Worth Sat 7 Nov, 09:10 local.

SYD-bound flights are the slower direction by about 75 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 distance13,808 km · 8,580 mi · 7,456 nmi
Initial heading249° (WSW) from DFW; 70° (ENE) from SYD
Farthest from the equator33.9°S
Crossesthe equator and the 180th meridian (International Date Line area)
Share of the longest possible trip69% of the 20,015 km to the far side of the Earth

Time zones and jet lag

DFWAmerica/Chicago — UTC−5 now; UTC−6 standard time, UTC−5 during daylight saving time
SYDAustralia/Sydney — UTC+11 now; UTC+10 standard time, UTC+11 during daylight saving time
DifferenceSydney is 16 hours ahead of Dallas–Fort Worth today; +17 h in January and +15 h in July because daylight saving time starts and ends on different dates (or not at all).

Jet lag, flying DFW → SYD. The clock change is 16 hours, but to your body that is a shift of 8 hours the other way. Your body clock has to move 8 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 8 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 DFW 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).