AirHint found the following cheapest return flights from Phuket (HKT) to London (STN) in September 2025 (see full year).

Return flights

21 Sep - 27 Sep	Thai VietJet Air
16 Sep - 25 Sep	Thai VietJet Air
16 Sep - 26 Sep	Thai VietJet Air
29 Sep - 06 Oct	IndiGo
09 Sep - 12 Sep	IndiGo
29 Sep - 05 Oct	IndiGo
11 Sep - 18 Sep	Air Arabia
10 Sep - 25 Sep	Air Arabia
18 Sep - 04 Oct	Air Arabia
08 Sep - 11 Oct	Thai VietJet Air
15 Sep - 25 Oct	Air Arabia
15 Sep - 26 Oct	Air Arabia
11 Sep - 12 Oct	Air Arabia
15 Sep - 23 Oct	Air Arabia
15 Sep - 22 Oct	Air Arabia
15 Sep - 24 Oct	Air Arabia

Also check the deals for one-way flights from Phuket to London 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 Phuket to London in September from $664

Return flights