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

Return flights

08 Sep - 29 Sep	Pegasus Airlines
10 Sep - 24 Sep	Pegasus Airlines
10 Sep - 15 Oct	Pegasus Airlines
22 Sep - 29 Sep	Ryanair
01 Sep - 30 Sep	Pegasus Airlines
01 Sep - 04 Oct	Pegasus Airlines
08 Sep - 06 Oct	Pegasus Airlines
03 Sep - 06 Oct	Pegasus Airlines
06 Sep - 16 Oct	Pegasus Airlines
14 Sep - 08 Oct	Pegasus Airlines
05 Sep - 07 Oct	Ryanair
02 Sep - 09 Sep	Pegasus Airlines
02 Sep - 03 Oct	Pegasus Airlines
11 Sep - 30 Sep	Ryanair
01 Sep - 15 Sep	Pegasus Airlines
21 Sep - 01 Oct	Ryanair
06 Sep - 16 Sep	Ryanair
04 Sep - 15 Sep	Ryanair
06 Sep - 05 Oct	Pegasus Airlines
04 Sep - 12 Sep	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.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu

Cheapest return flights from Dublin to Kathmandu in September from $660

Return flights