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

Return flights

27 Apr - 11 May	Thai AirAsia
04 Apr - 15 Apr	Thai Lion Air
03 Apr - 15 Apr	Thai Lion Air
29 Apr - 11 May	AirAsia
23 Apr - 01 May	AirAsia
25 Apr - 09 May	Thai AirAsia
17 Apr - 03 May	Thai Lion Air
28 Apr - 05 May	Thai Lion Air
01 Apr - 07 Apr	Thai Lion Air
04 Apr - 14 Apr	AirAsia
08 Apr - 20 Apr	Thai Lion Air
01 Apr - 08 Apr	AirAsia
06 Apr - 20 Apr	AirAsia
03 Apr - 14 Apr	Thai AirAsia
03 Apr - 18 Apr	AirAsia
27 Apr - 05 May	Thai AirAsia
10 Apr - 24 Apr	AirAsia
25 Apr - 02 May	Thai AirAsia
07 Apr - 04 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 617€

Return flights