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

Return flights

13 Sep - 27 Sep	Thai VietJet Air
16 Sep - 23 Sep	Thai VietJet Air
03 Sep - 17 Sep	Thai VietJet Air
05 Sep - 15 Sep	Thai VietJet Air
28 Sep - 05 Oct	Air Arabia
24 Sep - 01 Oct	Air Arabia
03 Sep - 14 Sep	Thai VietJet Air
22 Sep - 29 Sep	AirAsia
25 Sep - 03 Oct	IndiGo
17 Sep - 24 Sep	Scoot Tigerair
23 Sep - 14 Oct	Thai VietJet Air
01 Sep - 09 Sep	Thai VietJet Air
17 Sep - 27 Sep	Air Arabia
01 Sep - 08 Sep	Thai AirAsia
22 Sep - 06 Oct	Qatar Airways
25 Sep - 09 Oct	Qatar Airways
08 Sep - 08 Oct	Etihad Airways
29 Sep - 06 Oct	Singapore Airlines
26 Sep - 03 Oct	IndiGo

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 532€

Return flights