Sydney (SYD) to Ho Chi Minh City (SGN): 4,254 miles (6,846 km) great-circle, about 9h 00m nonstop by our estimate. Cheapest fare observed: $642 round-trip on Cebu Pacific, with 1 stop, departing June 25, 2026.
$642 round-trip, Cebu Pacific 5J40, departing 2026-06-25 at 11:15, returning 2026-07-04. The recorded itinerary left on a Thursday, returning on a Saturday 9 nights later; the fare was observed 61 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $642, it ranked 12th of the 30 round-trip fares we recorded from SYD (median $777). That is 15.1 cents per great-circle mile (round-trip price over one-way distance), close to the SYD median of 15.3 cents across 30 round-trip routes.
Routes from SYD of similar length: Phuket (4,515 mi) at $457 and Bangkok (4,669 mi) at $533.
SYD to SGN is the only one of 30 SYD routes where Cebu Pacific priced cheapest. It is the 23rd longest of the 30 routes we track from SYD.
Of 20 departure airports with a fare to Ho Chi Minh City, Sydney (SYD) ranked 13th at $642. Lowest: $183 from Bangkok (BKK); highest: $1566 from Salt Lake City (SLC); 8 nonstop. Cheapest-fare airlines (routes): VietJet Air (3), Air India (2), American Airlines (2), Qatar (2), AirAsia (1) and Cathay Pacific (1), plus 9 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Australia/Sydney, Asia/Ho_Chi_Minh; flight time is our estimate.