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

Return flights

06 Oct - 13 Oct	AJet
04 Oct - 20 Oct	Pegasus Airlines
31 Oct - 06 Nov	AJet
23 Oct - 02 Nov	Pegasus Airlines
07 Oct - 08 Nov	Jazeera Airways
18 Oct - 18 Nov	Jazeera Airways
01 Oct - 17 Oct	AJet
01 Oct - 14 Oct	Air Arabia
01 Oct - 05 Oct	Air Arabia
02 Oct - 18 Oct	Air Arabia
09 Oct - 23 Oct	Turkish Airlines
02 Oct - 21 Oct	Air Arabia
25 Oct - 08 Nov	Jazeera Airways
31 Oct - 22 Nov	Air Arabia
04 Oct - 29 Oct	Air Arabia
15 Oct - 15 Oct	Turkish Airlines
23 Oct - 02 Nov	Turkish Airlines	direct
25 Oct - 08 Nov	Turkish Airlines	direct
18 Oct - 18 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 $491

Return flights