Vietnam Airlines have great deals on PE from France, so I booked a one-way ticket today from Toulouse to Sydney via Paris for $2,153.71, Premium Economy Classic.
This does involve a long stopover in Vietnam.
Two options, flying via Hanoi or Ho Chi Minh City, same price. 13 hour layover if going via Ho Chi Minh City, 17 hours if going via Hanoi.
But they offer extremely good Vietnam Transit Tours which was part of the attraction, a day in either of those cities with personal tour, hotel...