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

Return flights

17 Oct - 24 Oct	ITA Airways
23 Oct - 31 Oct	ITA Airways
02 Oct - 15 Oct	ITA Airways
01 Oct - 10 Oct	ITA Airways
21 Oct - 28 Oct	SWISS
01 Oct - 22 Oct	ITA Airways
28 Oct - 17 Nov	ITA Airways
28 Oct - 18 Nov	ITA Airways
18 Oct - 25 Oct	ITA Airways
01 Oct - 31 Oct	ITA Airways
02 Oct - 08 Oct	ITA Airways
21 Oct - 13 Nov	SWISS
27 Oct - 17 Nov	ITA Airways
27 Oct - 12 Nov	KLM
02 Oct - 06 Oct	ITA Airways
27 Oct - 09 Nov	KLM
27 Oct - 11 Nov	KLM
27 Oct - 10 Nov	KLM
27 Oct - 06 Nov	KLM
29 Oct - 10 Nov	KLM

Also check the deals for one-way flights from London to Bangkok 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 London to Bangkok in October from $816

Return flights