AirHint found the following cheapest return flights from London (LCY) to Bangkok (BKK) in October 2026 (see full year).

Return flights

18 Oct - 21 Oct	SWISS
11 Oct - 18 Oct	SWISS
04 Oct - 18 Oct	SWISS
07 Oct - 21 Oct	SWISS
14 Oct - 21 Oct	SWISS
07 Oct - 14 Oct	SWISS
19 Oct - 26 Oct	SWISS
05 Oct - 18 Oct	SWISS
09 Oct - 18 Oct	SWISS
03 Oct - 15 Oct	KLM
12 Oct - 02 Nov	KLM
13 Oct - 03 Nov	KLM
26 Oct - 02 Nov	KLM
19 Oct - 02 Nov	KLM
20 Oct - 03 Nov	KLM
22 Oct - 03 Nov	KLM
17 Oct - 01 Nov	KLM
29 Oct - 02 Nov	KLM
21 Oct - 04 Nov	SWISS
23 Oct - 02 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 $824

Return flights