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

Return flights

29 Jan - 12 Feb	Thai AirAsia X
25 Jan - 31 Jan	Thai Lion Air
20 Jan - 31 Jan	AirAsia
17 Jan - 31 Jan	AirAsia
17 Jan - 25 Jan	Thai AirAsia
21 Jan - 27 Jan	AirAsia
28 Jan - 04 Feb	Thai AirAsia
21 Jan - 05 Feb	Thai AirAsia
20 Jan - 22 Jan	Thai AirAsia
19 Jan - 03 Feb	AirAsia
26 Jan - 30 Jan	Batik Air Malaysia
22 Jan - 23 Jan	Thai AirAsia
27 Jan - 26 Feb	Thai Lion Air
22 Jan - 29 Jan	Thai Lion Air
13 Jan - 27 Jan	AirAsia
18 Jan - 01 Feb	AirAsia
31 Jan - 07 Feb	AirAsia
22 Jan - 07 Feb	AirAsia
19 Jan - 19 Feb	Thai Lion Air
17 Jan - 03 Feb	Indonesia AirAsia

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

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 January from 603€

Return flights