AirHint found the following cheapest return flights from Islamabad (ISB) to Bangkok (BKK) in September 2025 (see full year).

Return flights

22 Sep - 30 Sep	PIA
15 Sep - 30 Sep	PIA
15 Sep - 22 Sep	PIA
18 Sep - 25 Sep	Gulf Air
08 Sep - 22 Sep	PIA
01 Sep - 12 Sep	PIA
08 Sep - 15 Sep	Etihad Airways
09 Sep - 16 Sep	China Southern
19 Sep - 27 Sep	Etihad Airways
01 Sep - 26 Sep	Etihad Airways
29 Sep - 06 Oct	Emirates
26 Sep - 03 Oct	Etihad Airways
01 Sep - 29 Oct	Etihad Airways
03 Sep - 31 Oct	Etihad Airways
23 Sep - 01 Oct	Etihad Airways
26 Sep - 04 Oct	Etihad Airways
26 Sep - 03 Oct	Thai Airways	direct
03 Sep - 31 Oct	Thai Airways	direct
26 Sep - 04 Oct	Thai Airways	direct
29 Sep - 06 Oct	Thai Airways	direct

Also check the deals for one-way flights from Islamabad 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.

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Cheapest return flights from Islamabad to Bangkok in September from 484€

Return flights