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

Return flights

29 Jul - 11 Aug	Air Arabia
30 Jul - 12 Aug	Air Arabia
31 Jul - 07 Aug	Air Arabia
25 Jul - 01 Aug	Air Arabia
31 Jul - 11 Aug	Air Arabia
27 Jul - 03 Aug	Air Arabia
23 Jul - 28 Jul	IndiGo
22 Jul - 12 Aug	Pegasus Airlines
21 Jul - 11 Aug	Pegasus Airlines
27 Jul - 03 Aug	Turkish Airlines	direct
21 Jul - 11 Aug	Turkish Airlines	direct
24 Jul - 31 Jul	Turkish Airlines	direct
23 Jul - 28 Jul	Turkish Airlines	direct

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

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 July from 432€

Return flights