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

Return flights

04 Jun - 16 Jun	KLM
04 Jun - 25 Jun	KLM
10 Jun - 25 Jun	KLM
04 Jun - 27 Jun	KLM
10 Jun - 26 Jun	KLM
12 Jun - 23 Jun	KLM
07 Jun - 18 Jun	KLM
10 Jun - 23 Jun	KLM
04 Jun - 18 Jun	KLM
03 Jun - 15 Jun	KLM
11 Jun - 09 Jul	KLM
12 Jun - 08 Jul	KLM
11 Jun - 02 Jul	KLM
12 Jun - 05 Jul	KLM
11 Jun - 10 Jul	KLM
08 Jun - 08 Jul	KLM
11 Jun - 08 Jul	KLM
14 Jun - 10 Jul	KLM
14 Jun - 05 Jul	KLM
12 Jun - 03 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 $775

Return flights