Cheapest return flights from Hong Kong to Hanoi in September from $142

Best time to book flights for Hong Kong (HKG) to Hanoi (HAN) flights at AirHint

AirHint found the following cheapest return flights from Hong Kong (HKG) to Hanoi (HAN) in September 2025 (see full year).

Return flights

04 Sep - 25 Sep HK Express direct
18 Sep - 22 Sep HK Express direct
13 Sep - 20 Sep Vietnam Airlines direct
08 Sep - 11 Sep Thai AirAsia
05 Sep - 11 Sep Thai AirAsia
14 Sep - 20 Sep Thai AirAsia
08 Sep - 20 Sep Thai AirAsia
08 Sep - 13 Sep Thai AirAsia
05 Sep - 20 Sep Thai AirAsia
05 Sep - 13 Sep Thai AirAsia
20 Sep - 09 Oct Thai AirAsia
20 Sep - 07 Oct Thai AirAsia
29 Sep - 15 Oct Thai AirAsia
29 Sep - 18 Oct Thai AirAsia
29 Sep - 09 Oct Thai AirAsia
29 Sep - 07 Oct Thai AirAsia
29 Sep - 14 Oct Thai AirAsia
20 Sep - 06 Oct Thai AirAsia
29 Sep - 06 Oct Thai AirAsia

Also check the deals for one-way flights from Hong Kong to Hanoi in September.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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