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

Return flights

17 Sep - 28 Sep	Emirates
22 Sep - 29 Sep	Emirates
05 Sep - 12 Sep	Emirates
21 Sep - 10 Oct	Emirates
08 Sep - 10 Sep	Qatar Airways
24 Sep - 13 Oct	Emirates
13 Sep - 13 Oct	Emirates
13 Sep - 14 Oct	Qatar Airways
14 Sep - 15 Oct	Emirates
15 Sep - 15 Oct	Emirates
16 Sep - 16 Oct	Qatar Airways
01 Sep - 10 Sep	Emirates
08 Sep - 10 Sep	Vietnam Airlines	direct
17 Sep - 28 Sep	Vietnam Airlines	direct
14 Sep - 15 Oct	Vietnam Airlines	direct
15 Sep - 15 Oct	Vietnam Airlines	direct
03 Sep - 10 Sep	British Airways
24 Sep - 13 Oct	Vietnam Airlines	direct
22 Sep - 29 Sep	Vietnam Airlines	direct

Also check the deals for one-way flights from Hanoi to London 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 Hanoi to London in September from $853

Return flights