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

Return flights

07 Sep - 07 Oct	Ryanair
16 Sep - 07 Oct	Ryanair
02 Sep - 02 Oct	Pegasus Airlines
03 Sep - 12 Sep	IndiGo
11 Sep - 25 Sep	Ryanair
06 Sep - 05 Oct	Ryanair
04 Sep - 15 Sep	Ryanair
18 Sep - 09 Oct	Ryanair
04 Sep - 13 Sep	IndiGo
14 Sep - 29 Sep	Ryanair
26 Sep - 14 Oct	Ryanair
27 Sep - 20 Oct	Ryanair
24 Sep - 01 Oct	Ryanair
24 Sep - 26 Sep	Ryanair
08 Sep - 23 Oct	Ryanair
02 Sep - 13 Sep	Pegasus Airlines
01 Sep - 08 Sep	Ryanair
15 Sep - 22 Sep	Ryanair
22 Sep - 28 Oct	Ryanair

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

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 Dublin to Kathmandu in September from 592€

Return flights