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

Return flights

15 Sep - 15 Oct	easyJet
16 Sep - 15 Oct	Air China
30 Sep - 14 Oct	China Eastern
04 Sep - 20 Sep	China Eastern
17 Sep - 24 Sep	China Southern
13 Sep - 14 Oct	Air China
24 Sep - 15 Oct	Air China
12 Sep - 21 Oct	Air China
07 Sep - 19 Oct	Air China
30 Sep - 16 Oct	China Eastern
30 Sep - 19 Oct	Norwegian Air Sweden AOC
06 Sep - 28 Oct	Hainan Airlines
01 Sep - 17 Sep	Air China
14 Sep - 21 Sep	China Eastern
05 Sep - 19 Sep	China Eastern
07 Sep - 20 Sep	China Eastern
13 Sep - 21 Sep	China Eastern
02 Sep - 17 Sep	China Eastern
15 Sep - 22 Sep	Air China
03 Sep - 21 Sep	Air China

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

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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Cheapest return flights from Paris to Hanoi in September from 558€

Return flights