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

Return flights

14 Oct - 21 Oct	IndiGo
12 Oct - 19 Oct	Pegasus Airlines
14 Oct - 19 Oct	IndiGo
05 Oct - 12 Oct	IndiGo
04 Oct - 12 Oct	IndiGo
28 Oct - 24 Nov	flyadeal
08 Oct - 24 Oct	IndiGo
12 Oct - 12 Oct	Air Arabia
05 Oct - 14 Oct	Air Arabia
13 Oct - 19 Oct	Air Arabia
03 Oct - 05 Oct	Air Arabia
28 Oct - 23 Nov	flyadeal
28 Oct - 20 Nov	flyadeal
29 Oct - 22 Nov	flyadeal
30 Oct - 22 Nov	flyadeal
27 Oct - 10 Nov	Pegasus Airlines
30 Oct - 15 Nov	flyadeal
23 Oct - 09 Nov	flyadeal
27 Oct - 08 Nov	Pegasus Airlines
31 Oct - 22 Nov	Pegasus Airlines

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 320€

Return flights