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

Return flights

24 May - 25 May	Thai AirAsia
22 May - 30 Jun	Thai Lion Air
11 May - 25 May	AirAsia
25 May - 08 Jun	AirAsia
01 May - 09 May	Thai Lion Air
29 May - 10 Jun	Thai Lion Air
14 May - 21 May	Thai AirAsia X
14 May - 28 May	Thai AirAsia X
22 May - 15 Jun	Thai Lion Air
08 May - 17 May	Thai Lion Air
09 May - 22 May	Thai AirAsia
17 May - 21 May	Thai AirAsia
08 May - 22 May	Thai AirAsia

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 652€

Return flights