Route notes
Why this routing works
This itinerary is structured as a Pacific island chain from Dallas, starting with the longest positioning flight into Nadi and then continuing through Wallis Island and Futuna Island before finishing in Apia. Keeping the stops in a single forward sequence reduces backtracking and makes the route easier to ticket as one multi-stop journey rather than a set of unrelated one-ways.
At three weeks in economy, the pacing fits travelers who want several short island stops without turning the trip into a longer round-the-world plan. January departure timing places the whole routing inside one travel window, which helps keep connections and stop order straightforward when building the ticket.
From a ticketing standpoint, the key logic here is using Dallas as both the origin and final return point, with the Pacific segments arranged between the long-haul outbound and inbound flights. That gives a clear start-end structure while still covering multiple islands on one booking.
Because this is a multi-stop itinerary rather than a simple roundtrip, sequencing matters more than mileage alone. Starting in Fiji, moving onward through the intermediate island airports, and ending in Apia before returning to Dallas creates a practical flow for a 3-week economy trip.