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

Return flights

08 Jan - 23 Jan	Air China
01 Jan - 23 Jan	Air China
17 Jan - 23 Jan	Air China
01 Jan - 30 Jan	Air China
09 Jan - 22 Jan	Air China
10 Jan - 23 Jan	Air China
03 Jan - 16 Jan	Air China
03 Jan - 23 Jan	Air China
15 Jan - 23 Jan	Air China
10 Jan - 16 Jan	Air China
28 Jan - 04 Feb	Lufthansa
27 Jan - 05 Feb	Lufthansa
24 Jan - 02 Feb	Austrian Airlines
25 Jan - 02 Feb	Austrian Airlines
25 Jan - 04 Feb	Austrian Airlines
18 Jan - 08 Feb	Aegean Airlines
18 Jan - 05 Feb	Aegean Airlines
25 Jan - 05 Feb	Austrian Airlines
24 Jan - 11 Feb	Air China
22 Jan - 03 Feb	Aegean Airlines

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 452€

Return flights