One-way travel needs a second piece of the route
A one-way ticket shows how you reach a country, but it says nothing about the next stage. That is why an airline desk may ask to see an onward flight before issuing the boarding pass.
You do not need to force the trip into a conventional return. An onward flight to a third country or an open-jaw departure from another city can follow the journey more accurately.
Plan from the final city, not the arrival city
Start with the last destination on the trip. If you land in Hanoi and travel south, an onward flight from Ho Chi Minh City avoids an unnecessary return. If you enter Japan through Tokyo and finish in Osaka, a Kansai departure follows the natural route.
This approach produces an itinerary that is easier to use and easier to explain. It also keeps the onward date connected to the actual length of the stay.
- Hanoi arrival and Ho Chi Minh City departure
- Tokyo arrival and Osaka departure
- Manila arrival and Cebu departure
- Bangkok arrival and Phuket departure
Keep passenger and route details consistent
Enter the passenger name exactly as shown in the passport. Check airport codes carefully, especially in cities with multiple airports such as Bangkok, Tokyo, Seoul and Beijing.
Choose an onward destination that fits the next stage of the journey. The finished PDF should show a route you could reasonably take, even when the reservation is being used to document the plan rather than board that flight.