AirHint found the following cheapest return flights from Kathmandu (KTM) to Istanbul (IST) in April 2026 (see full year).

Return flights

16 Apr - 22 Apr	IndiGo
17 Apr - 22 Apr	IndiGo
16 Apr - 20 Apr	IndiGo
15 Apr - 20 Apr	IndiGo
20 Apr - 27 Apr	IndiGo
16 Apr - 21 Apr	IndiGo
17 Apr - 21 Apr	IndiGo
14 Apr - 19 Apr	Air India
14 Apr - 19 Apr	Turkish Airlines	direct
16 Apr - 20 Apr	Turkish Airlines	direct

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

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 Kathmandu to Istanbul in April from 566€

Return flights