AirHint found the following cheapest return flights from Istanbul (IST) to Kathmandu (KTM) in October 2025 (see full year).

Return flights

07 Oct - 14 Oct	Air Arabia
06 Oct - 13 Oct	Air Arabia
05 Oct - 13 Oct	Pegasus Airlines
04 Oct - 13 Oct	Air Arabia
04 Oct - 12 Oct	Air Arabia
11 Oct - 13 Oct	Pegasus Airlines
31 Oct - 07 Nov	Pegasus Airlines
12 Oct - 19 Oct	Pegasus Airlines
27 Oct - 08 Nov	Pegasus Airlines
10 Oct - 12 Oct	Pegasus Airlines
02 Oct - 09 Oct	Air Arabia
23 Oct - 09 Nov	Flynas
08 Oct - 25 Nov	AZAL
30 Oct - 30 Nov	AJet
10 Oct - 22 Oct	Air Arabia
19 Oct - 05 Nov	Pegasus Airlines
28 Oct - 01 Nov	Pegasus Airlines
10 Oct - 10 Nov	IndiGo
11 Oct - 11 Nov	AZAL
08 Oct - 25 Nov	Turkish Airlines	direct

Also check the deals for one-way flights from Istanbul to Kathmandu in October.

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 Istanbul to Kathmandu in October from $507

Return flights