Cheapest return flights from Delhi to Kathmandu in September from $165

Best time to book flights for Delhi (DEL) to Kathmandu (KTM) flights at AirHint

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

Return flights

30 Sep - 17 Oct SriLankan Airlines
01 Sep - 06 Sep IndiGo direct
17 Sep - 27 Sep IndiGo direct
10 Sep - 23 Oct IndiGo direct
29 Sep - 17 Oct SriLankan Airlines
29 Sep - 06 Oct SriLankan Airlines
29 Sep - 17 Oct Nepal Airlines direct
30 Sep - 17 Oct Nepal Airlines direct
29 Sep - 06 Oct Nepal Airlines direct
29 Sep - 07 Oct IndiGo
29 Sep - 07 Oct IndiGo direct

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

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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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