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

Return flights

05 May - 21 May	Air China
01 May - 20 May	Air China
18 May - 25 May	Air China
17 May - 29 May	Air China
05 May - 17 May	Air China
03 May - 11 May	Air China
06 May - 21 May	Air China
04 May - 09 May	Air China
14 May - 26 May	Air China
01 May - 09 May	Air China
05 May - 09 Jun	Air China
21 May - 06 Jun	Air China
18 May - 01 Jun	Air China
01 May - 01 Jun	Air China
22 May - 06 Jun	Air China
16 May - 06 Jun	Air China
23 May - 06 Jun	Air China
19 May - 04 Jun	Singapore Airlines
16 May - 04 Jun	Singapore Airlines
30 May - 04 Jun	Singapore Airlines

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

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 May from 874CAD

Return flights