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

Return flights

17 Sep - 22 Sep	IndiGo
19 Sep - 22 Sep	Thai VietJet Air
18 Sep - 22 Sep	Thai VietJet Air
17 Sep - 21 Sep	IndiGo
12 Sep - 13 Sep	Thai AirAsia
19 Sep - 21 Sep	Thai VietJet Air
12 Sep - 14 Sep	Thai AirAsia
18 Sep - 21 Sep	Thai VietJet Air
08 Sep - 08 Oct	IndiGo
10 Sep - 13 Sep	IndiGo
11 Sep - 14 Sep	IndiGo
28 Sep - 05 Oct	Qatar Airways
27 Sep - 04 Oct	Malaysia Airlines
30 Sep - 10 Oct	Qatar Airways
25 Sep - 02 Oct	Emirates

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 $674

Return flights