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

Return flights

26 Jan - 05 Feb	Hainan Airlines
28 Jan - 04 Feb	China Eastern
29 Jan - 05 Feb	China Eastern
26 Jan - 02 Feb	Air China
25 Jan - 06 Feb	Air China
26 Jan - 06 Feb	Air China
26 Jan - 09 Feb	Air China
27 Jan - 11 Feb	Air China
21 Jan - 04 Feb	Air China
21 Jan - 05 Feb	Air China
21 Jan - 26 Jan	Air China
23 Jan - 26 Jan	Air China
22 Jan - 26 Jan	Air China
21 Jan - 29 Jan	Air China
23 Jan - 29 Jan	Air China
25 Jan - 29 Jan	Air China
24 Jan - 28 Jan	Air China
23 Jan - 28 Jan	Air China
26 Jan - 29 Jan	Air China
22 Jan - 29 Jan	China Eastern

Also check the deals for one-way flights from London to Bangkok 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 London to Bangkok in January from $504

Return flights