Bangkok to Sydney (Mascot)
9h 47m The flight from Don Mueang International Airport (DMK) to Sydney Kingsford Smith International Airport (SYD) covers 7,544 km (4,687 miles) and takes approximately 9h 47m gate to gate for a typical jet.
The route heads south-east on an initial great-circle bearing of 136°, passing near 11.0° S, 123.8° E at its midpoint.
The route
The great-circle path — the shortest line between the two airports across the curve of the earth. On a flat map it looks bent; on a globe it is straight.
Flight time at different cruise speeds
Aircraft type, winds and routing all move the real number. This is the same distance flown at different speeds, plus the 25-minute ground and climb allowance.
| Typical of | Cruise speed | Airborne | Gate to gate |
|---|---|---|---|
| Turboprop / regional | 550 km/h | 13h 43m | 14h 08m |
| Narrowbody jet (A320, 737) | 780 km/h | 9h 40m | 10h 05m |
| Widebody jet (777, 787, A350) | 900 km/h | 8h 23m | 8h 48m |
| Private jet (Gulfstream) | 850 km/h | 8h 52m | 9h 18m |
Headwinds on an eastbound long-haul routinely add 30–60 minutes; the same route westbound can be quicker. Airlines publish schedules with padding built in.
Both airports
| DMK | SYD | |
|---|---|---|
| Airport | Don Mueang International Airport | Sydney Kingsford Smith International Airport |
| City | Bangkok | Sydney (Mascot) |
| Country | Thailand | Australia |
| ICAO | VTBD | YSSY |
| Coordinates | 13.9126, 100.607 | -33.9461, 151.177 |
| Elevation | 9 ft | 21 ft |
Questions
How long is the flight from Bangkok to Sydney (Mascot)?
A non-stop flight from Bangkok (DMK) to Sydney (Mascot) (SYD) takes about 9h 47m. The great-circle distance is 7,544 km (4,687 miles, 4,073 nautical miles), flying south-east on an initial bearing of 136°.
How far is Bangkok from Sydney (Mascot)?
7,544 kilometres in a straight line over the earth's surface — 4,687 miles or 4,073 nautical miles. Actual flown distance is usually 2–5% longer because aircraft follow airways, avoid weather and route around restricted airspace.
Is there a non-stop flight between DMK and SYD?
This page calculates the direct-line time and distance; it does not track airline schedules. At 7,544 km the route is comfortably within range of a non-stop service if an airline chooses to fly it. Check an airline or booking site for what is actually scheduled.
What should I expect on a 9h 47m flight?
Anything past six hours is a long-haul flight: expect at least one meal service, a significant time-zone shift, and enough sitting that circulation and hydration start to matter. Cabin altitude, dry air and disrupted sleep do more damage to a training routine than the flight itself.
Airport coordinates from OurAirports (public domain). Distance is a great-circle calculation; flight time uses the model described on the method page. Flight times are great-circle estimates for planning only — always check the airline's published schedule.