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

Return flights

10 Jun - 24 Jun	Air China
02 Jun - 24 Jun	Air China
09 Jun - 19 Jun	Air China
09 Jun - 24 Jun	Air China
04 Jun - 15 Jun	Air China
06 Jun - 15 Jun	Air China
11 Jun - 19 Jun	Air China
04 Jun - 12 Jun	Air China
06 Jun - 19 Jun	Air China
18 Jun - 29 Jun	Air China
02 Jun - 03 Jul	Air China
16 Jun - 10 Jul	Air China
06 Jun - 06 Jul	Air China
10 Jun - 12 Jul	Air China
02 Jun - 02 Jul	Air China
13 Jun - 04 Jul	Austrian Airlines
22 Jun - 10 Jul	Austrian Airlines
01 Jun - 01 Jul	Air China
22 Jun - 09 Jul	Austrian Airlines
22 Jun - 12 Jul	Austrian Airlines

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 $640

Return flights