Cheapest return flights from Delhi to Kathmandu in September from $157

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

06 Sep - 06 Sep Air India direct
05 Sep - 22 Sep Air India direct
16 Sep - 21 Sep Air India direct
10 Sep - 21 Sep Air India direct
01 Sep - 22 Sep Air India direct
18 Sep - 23 Sep Air India direct
10 Sep - 24 Sep Air India direct
08 Sep - 15 Sep Air India direct
07 Sep - 10 Sep Air India direct
08 Sep - 13 Sep Air India direct
04 Sep - 30 Oct IndiGo direct
24 Sep - 08 Oct Nepal Airlines direct
25 Sep - 08 Oct Nepal Airlines direct
22 Sep - 05 Oct Nepal Airlines direct
29 Sep - 11 Oct Nepal Airlines direct
21 Sep - 22 Oct Nepal Airlines direct
28 Sep - 28 Oct IndiGo
30 Sep - 14 Oct Nepal Airlines direct
26 Sep - 12 Oct IndiGo direct
26 Sep - 02 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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