Route notes
Why this routing works
This itinerary is structured as an open-jaw multi-stop: Singapore to Hong Kong, then a separate long-haul continuation into the northeastern United States after an overland gap. From there, the ticket folds in a mix of short domestic sectors and surface transfers, which is a practical way to connect cities that are close together without forcing unnecessary flight segments.
The sequence keeps the longest international flying at the beginning and end of the trip, with the U.S. section handled as a domestic loop in between. Overland moves from Hong Kong to Harrisburg and from Philadelphia to Richmond create flexibility in the middle of the route, while the flown sectors pick up again from Philadelphia to Norfolk and continue westward through Seattle, Reno, Dallas, and Colorado Springs before the final return to Singapore.
With 5 weeks total in economy, the timing is weighted toward the U.S. portion rather than the brief stop in Hong Kong. The longest stays are placed later in the trip, with 5 nights in Dallas and 8 nights in Colorado Springs, which reduces the number of airport days toward the end. For ticketing, this kind of build works well when you want one priced framework for the major flights while leaving selected gaps open for independent overland travel.