Cheapest return flights from Delhi to Kathmandu in September from $152

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

Return flights

13 Sep - 14 Sep Air India direct
18 Sep - 23 Sep Air India direct
01 Sep - 20 Sep Air India direct
13 Sep - 22 Sep Air India direct
18 Sep - 21 Sep Air India direct
10 Sep - 17 Sep Air India direct
04 Sep - 08 Sep Air India direct
11 Sep - 14 Sep Air India direct
13 Sep - 16 Sep Air India direct
11 Sep - 15 Sep Air India direct
30 Sep - 29 Oct SpiceJet direct
03 Sep - 21 Oct IndiGo direct
30 Sep - 09 Oct SpiceJet direct
30 Sep - 26 Oct SpiceJet direct
18 Sep - 30 Oct SpiceJet direct
16 Sep - 27 Oct Air India direct
30 Sep - 15 Oct IndiGo
30 Sep - 25 Oct IndiGo
26 Sep - 19 Oct SpiceJet direct
26 Sep - 18 Oct SpiceJet 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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