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

Return flights

23 Sep - 07 Oct	IndiGo
28 Sep - 03 Oct	Thai VietJet Air
27 Sep - 04 Oct	Thai VietJet Air
22 Sep - 29 Sep	Etihad Airways
30 Sep - 14 Oct	Etihad Airways
30 Sep - 13 Oct	Etihad Airways
17 Sep - 24 Sep	Air India
21 Sep - 28 Sep	Thai VietJet Air
16 Sep - 23 Sep	Thai AirAsia
18 Sep - 20 Oct	Thai VietJet Air
19 Sep - 26 Sep	Air Arabia
18 Sep - 25 Sep	Air India
15 Sep - 22 Sep	British Airways
21 Sep - 30 Sep	Thai VietJet Air
19 Sep - 27 Sep	British Airways
27 Sep - 23 Oct	Etihad Airways
14 Sep - 20 Sep	British Airways
18 Sep - 04 Oct	IndiGo
28 Sep - 15 Oct	British Airways

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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Phuket to London in September from $835

Return flights