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

Return flights

06 Apr - 09 Apr	Thai AirAsia
02 Apr - 18 Apr	Thai AirAsia
07 Apr - 20 Apr	AirAsia
17 Apr - 28 Apr	AirAsia
07 Apr - 29 Apr	Thai Lion Air
05 Apr - 22 Apr	AirAsia
20 Apr - 27 Apr	Thai Lion Air
01 Apr - 13 Apr	Thai AirAsia
19 Apr - 03 May	AirAsia
12 Apr - 22 Apr	Thai Lion Air
28 Apr - 11 May	AirAsia
01 Apr - 30 Apr	Thai Lion Air
30 Apr - 08 May	Thai AirAsia X
21 Apr - 14 May	AirAsia
21 Apr - 21 May	Batik Air Malaysia
24 Apr - 01 May	Thai Lion Air
07 Apr - 04 May	Thai Lion Air
04 Apr - 09 May	Thai Lion Air

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

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 April from 573€

Return flights