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

Return flights

05 Sep - 11 Sep	Fly Jinnah
19 Sep - 22 Sep	Fly Jinnah
07 Sep - 12 Sep	Fly Jinnah
01 Sep - 30 Sep	PIA
04 Sep - 18 Sep	SalamAir
07 Sep - 17 Sep	China Southern
11 Sep - 15 Sep	China Southern
01 Sep - 07 Sep	PIA
19 Sep - 26 Sep	PIA
02 Sep - 08 Sep	PIA
05 Sep - 12 Oct	Etihad Airways
15 Sep - 05 Oct	Etihad Airways
13 Sep - 03 Oct	Emirates
06 Sep - 13 Oct	Etihad Airways
01 Sep - 29 Oct	PIA
13 Sep - 03 Oct	Thai Airways	direct
06 Sep - 13 Oct	Thai Airways	direct
01 Sep - 29 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 $578

Return flights