Route notes
Why this routing works
This 3-week economy itinerary is structured around a focused Australia routing, starting in Las Vegas and crossing to Sydney before continuing to Melbourne, returning to Sydney, then moving north to Cairns and Brisbane. It finishes with the transpacific return to Los Angeles, keeping the long-haul sectors at the beginning and end of the trip.
The sequence works well for travelers who want multiple Australian stops on one ticket rather than separate point-to-point bookings. With Sydney appearing twice, the routing allows for a backtrack built into the fare structure, which can simplify connections between the southern and northern parts of the trip while keeping the overall direction easy to follow.
For timing, February departures place this itinerary in the January-March travel window. At 3 weeks, the schedule is long enough to spread out several domestic segments without turning the trip into a full round-the-world journey, and the economy price range of USD 2,855 to USD 4,355 gives a clear planning baseline for a multi-stop ticket covering both transpacific and intra-Australia flights.