Route notes
Why this routing works
This round-the-world routing keeps the trip to three flight segments after departure: Brisbane to Vancouver, Vancouver to London, then London back to Brisbane. With only two stopover cities, the sequence is straightforward and works well for a compact three-week plan.
In economy, this is a clean RTW structure for travelers who want transpacific and Europe sectors on one ticket rather than piecing together separate one-way fares. The stop order minimizes backtracking by moving in one direction before returning to Australia.
With three weeks total, timing is tight enough that each stop needs a defined share of the schedule. September departure timing suits an itinerary that balances two major long-haul stays without adding extra surface sectors or additional flight connections.