AirHint found the following cheapest return flights from London (STN) to Bangkok (BKK) in September 2026 (see full year).

Return flights

17 Sep - 24 Sep	Ryanair
01 Sep - 17 Sep	Ryanair
07 Sep - 24 Sep	Ryanair
03 Sep - 17 Sep	Ryanair
15 Sep - 28 Sep	Ryanair
15 Sep - 24 Sep	Ryanair
15 Sep - 23 Sep	Ryanair
16 Sep - 26 Sep	Ryanair
15 Sep - 25 Sep	Ryanair
12 Sep - 26 Sep	Ryanair
19 Sep - 06 Oct	Ryanair
21 Sep - 02 Oct	Ryanair
17 Sep - 01 Oct	Ryanair
20 Sep - 01 Oct	Ryanair
22 Sep - 04 Oct	Ryanair
27 Sep - 03 Oct	Ryanair
25 Sep - 04 Oct	Ryanair
16 Sep - 07 Oct	Emirates
28 Sep - 07 Oct	Emirates
23 Sep - 07 Oct	Emirates

Also check the deals for one-way flights from London to Bangkok 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 Bangkok

Cheap car rent in Bangkok

Cheapest return flights from London to Bangkok in September from 453€

Return flights