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

Return flights

01 Dec - 10 Dec	Fly Jinnah
01 Dec - 01 Jan	Fly Jinnah
13 Dec - 17 Dec	Thai Airways
01 Dec - 17 Dec	Fly Jinnah
09 Dec - 17 Dec	Hahn Air Technologies
17 Dec - 07 Jan	Thai Airways	direct
17 Dec - 17 Jan	Thai Airways	direct
08 Dec - 26 Jan	Thai Airways	direct
05 Dec - 08 Dec	PIA
27 Dec - 21 Jan	Fly Jinnah
23 Dec - 07 Jan	SalamAir
17 Dec - 02 Jan	Thai Airways	direct
22 Dec - 29 Dec	SalamAir
06 Dec - 12 Dec	Emirates
08 Dec - 19 Dec	Fly Jinnah
27 Dec - 21 Jan	Thai Airways	direct
04 Dec - 08 Dec	Fly Jinnah
04 Dec - 11 Dec	China Southern
22 Dec - 03 Jan	SalamAir
28 Dec - 07 Jan	PIA

Also check the deals for one-way flights from Islamabad to Bangkok in December.

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 December from $628

Return flights