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

Return flights

27 Jan - 03 Feb	SWISS
22 Jan - 03 Feb	SWISS
28 Jan - 03 Feb	KLM
27 Jan - 04 Feb	SWISS
22 Jan - 25 Jan	SWISS
22 Jan - 05 Feb	SWISS
21 Jan - 04 Feb	Lufthansa
29 Jan - 03 Feb	SWISS
20 Jan - 03 Feb	SWISS
28 Jan - 02 Feb	KLM
18 Jan - 28 Jan	KLM
22 Jan - 02 Feb	SWISS
20 Jan - 26 Jan	ITA Airways
20 Jan - 28 Jan	ITA Airways
21 Jan - 27 Jan	ITA Airways
22 Jan - 27 Jan	ITA Airways
18 Jan - 27 Jan	ITA Airways
20 Jan - 27 Jan	ITA Airways
21 Jan - 26 Jan	ITA Airways
22 Jan - 26 Jan	ITA Airways

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from London to Bangkok in January from 622€

Return flights