?i?m th??ng ???c tích t?i m?i th?i ?i?m khác nhau s? có th?i h?n s? d?ng khác nhau.2. What's The most cost effective month to fly to Vietnam? The most affordable month to fly to Vietnam is usually September or Oct. These months are at the end of the dry year, so less visitors are viewing Vietnam. Due to this fact, airlines generally present dis