Cheapest return flights from Hong Kong to Hanoi in September from $191

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

Return flights

29 Sep - 18 Oct HK Express direct
29 Sep - 26 Oct HK Express direct
29 Sep - 02 Oct HK Express direct
29 Sep - 03 Oct HK Express direct
28 Sep - 29 Sep HK Express direct
28 Sep - 30 Sep HK Express direct
29 Sep - 04 Oct HK Express direct
30 Sep - 02 Oct HK Express direct
28 Sep - 04 Oct Philippine Airlines
30 Sep - 06 Oct Philippine Airlines
28 Sep - 04 Oct Vietnam Airlines direct
30 Sep - 04 Oct Philippine Airlines
30 Sep - 30 Sep HK Express
30 Sep - 30 Sep Cathay Pacific direct

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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