Route notes
Why this routing works
This routing is structured as an open-jaw in Southeast Asia: fly from Washington DC into Hanoi, continue overland to Siem Reap, then fly back to Washington DC. That setup keeps the long-haul flights focused on the transpacific segments while leaving the Hanoi-Siem Reap portion flexible on the ground.
At two weeks, the sequence works best with limited stop count and straightforward pacing. Using Hanoi as the arrival point and Siem Reap as the departure point avoids backtracking within the region and lets the itinerary move in one direction before the return.
In economy, the price range of $1,165 to $1,526 places this as a concise multi-stop ticket built around two international flight endpoints in Southeast Asia. For a March departure in the Jan-Mar season window, the key planning point is aligning the overland segment cleanly between the arrival into Vietnam and the return flight from Cambodia.