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

Return flights

03 Jun - 16 Jun	SWISS
05 Jun - 21 Jun	Lufthansa
03 Jun - 17 Jun	SWISS
03 Jun - 19 Jun	SWISS
04 Jun - 16 Jun	SWISS
02 Jun - 16 Jun	SWISS
10 Jun - 24 Jun	KLM
05 Jun - 17 Jun	KLM
01 Jun - 24 Jun	KLM
10 Jun - 17 Jun	KLM
17 Jun - 03 Jul	KLM
09 Jun - 07 Jul	KLM
17 Jun - 04 Jul	KLM
17 Jun - 11 Jul	KLM
08 Jun - 01 Jul	KLM
01 Jun - 10 Jul	KLM
12 Jun - 03 Jul	KLM
08 Jun - 08 Jul	KLM
10 Jun - 10 Jul	KLM
16 Jun - 08 Jul	KLM

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

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 June from 590€

Return flights