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

Return flights

05 May - 18 May	AirAsia
29 May - 15 Jun	Thai Lion Air
09 May - 16 May	Thai Lion Air
08 May - 16 May	Thai Lion Air
01 May - 09 May	Thai Lion Air
12 May - 19 May	Thai Lion Air
16 May - 23 May	Thai AirAsia
07 May - 14 May	Thai Lion Air
11 May - 02 Jun	Thai AirAsia
04 May - 11 May	Thai Lion Air
21 May - 01 Jun	Thai AirAsia
31 May - 10 Jun	Thai Lion Air
29 May - 06 Jun	Thai Lion Air
16 May - 20 May	Thai AirAsia
04 May - 14 May	Thai Lion Air
21 May - 02 Jun	Thai Lion Air

Also check the deals for one-way flights from Bangkok to London 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 Bangkok to London in May from 758€

Return flights