Route notes
Why this routing works
This itinerary is built as a westbound Pacific crossing that starts in Washington DC, uses San Francisco as the first stop, and then continues to Nadi before resuming in Brisbane. The route includes two intentional overland sectors: Nadi to Brisbane is followed by a separate Brisbane to Melbourne segment, and later Christchurch to Auckland is ticketed after an overland arrival into Auckland. That structure is useful when flights are only needed for the long-haul and key regional links, while ground or separately arranged transport covers the gaps.
The sequence then moves from Auckland into Hong Kong, Bangkok, Johannesburg, and finishes in London. Across Hong Kong, Bangkok, and Johannesburg, this is a long-stay style itinerary using a multi-stop ticket to lock in the backbone of the trip while leaving substantial time between departures. That kind of spacing matters because it reduces backtracking and keeps the route moving in one general direction.
At 3 weeks in economy, the ticketing logic here is centered on linking distant regions efficiently rather than adding extra flight sectors. The route covers North America, the South Pacific, Australasia, Asia, Africa, and Europe in a single booking flow, with the open segments giving flexibility where a continuous flight chain was not required.