AirHint found the following cheapest return flights from Bangkok (DMK) to London (LHR) in October 2025 (see full year).

Return flights

02 Oct - 09 Oct	Thai AirAsia
01 Oct - 08 Oct	Thai AirAsia X
25 Oct - 01 Nov	Thai AirAsia
12 Oct - 19 Oct	Nok Air
06 Oct - 13 Oct	AirAsia
13 Oct - 20 Oct	Nok Air
14 Oct - 21 Oct	Nok Air
11 Oct - 18 Oct	AirAsia
08 Oct - 15 Oct	Thai AirAsia X
15 Oct - 22 Oct	Thai AirAsia
16 Oct - 23 Oct	Thai AirAsia
28 Oct - 04 Nov	Thai AirAsia X
27 Oct - 03 Nov	AirAsia

Also check the deals for one-way flights from Bangkok to London in October.

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 Bangkok to London in October from $728

Return flights