Cheapest return flights from Kathmandu to Istanbul in September from $592

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

Return flights

25 Sep - 02 Oct Air Arabia
26 Sep - 05 Oct Air Arabia
26 Sep - 02 Oct Air Arabia
27 Sep - 04 Oct Air Arabia
28 Sep - 05 Oct Air Arabia
25 Sep - 04 Oct Air Arabia
26 Sep - 04 Oct Air Arabia
23 Sep - 04 Oct Air Arabia
26 Sep - 02 Oct Turkish Airlines direct
26 Sep - 04 Oct Turkish Airlines direct

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

Skyscanner

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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