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

Return flights

22 Oct - 17 Nov	ITA Airways
25 Oct - 20 Nov	ITA Airways
25 Oct - 14 Nov	ITA Airways
25 Oct - 07 Nov	ITA Airways
22 Oct - 07 Nov	ITA Airways
15 Oct - 10 Nov	ITA Airways
28 Oct - 07 Nov	SWISS
28 Oct - 09 Nov	SWISS
28 Oct - 04 Nov	SWISS
28 Oct - 10 Nov	SWISS
15 Oct - 23 Oct	SWISS
25 Oct - 28 Oct	ITA Airways
03 Oct - 17 Oct	ITA Airways
15 Oct - 27 Oct	SWISS
15 Oct - 28 Oct	SWISS
15 Oct - 30 Oct	SWISS
15 Oct - 21 Oct	SWISS
26 Oct - 28 Oct	SWISS
08 Oct - 15 Oct	SWISS
02 Oct - 05 Oct	SWISS

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 625€

Return flights