AirHint found the following cheapest return flights from London (LCY) to Phuket (HKT) in September 2026 (see full year).

Return flights

11 Sep - 23 Sep	KLM
09 Sep - 16 Sep	KLM
15 Sep - 23 Sep	KLM
09 Sep - 15 Sep	KLM
01 Sep - 15 Sep	British Airways
07 Sep - 16 Sep	British Airways
07 Sep - 15 Sep	British Airways
09 Sep - 21 Sep	KLM
20 Sep - 30 Sep	KLM
14 Sep - 23 Sep	KLM
18 Sep - 07 Oct	KLM
18 Sep - 04 Oct	KLM
22 Sep - 01 Oct	SWISS
08 Sep - 06 Oct	SWISS
24 Sep - 24 Oct	SWISS
18 Sep - 01 Oct	SWISS
25 Sep - 09 Oct	KLM
21 Sep - 04 Oct	Aer Lingus
19 Sep - 10 Oct	KLM
30 Sep - 09 Oct	KLM

Also check the deals for one-way flights from London to Phuket in September.

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 Phuket in September from 750€

Return flights