If an itinerary includes segment(s) that do not meet the conditions of a round-trip itinerary, the round-trip discount will not be applied.
Example:
Segment 1: Tokyo (Haneda) > Osaka (Itami) / Segment 2: Osaka (Itami) > Tokyo (Haneda) / Segment 3: Tokyo (Haneda) > Fukuoka: In this case, Segments 1 and 2 meet the round-trip requirements. However, Segment 3, which does not meet the round-trip requirements and is not eligible for the round-trip discount, is included in the same itinerary. If you wish to apply the round-trip discount in the above case, please purchase a reservation for Segments 1 and 2, and then a separate reservation for Segment 3.