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

Return flights

28 Sep - 03 Oct	AirAsia X
22 Sep - 03 Oct	AirAsia X
28 Sep - 02 Oct	Singapore Airlines
07 Sep - 17 Sep	AirAsia X
08 Sep - 17 Sep	AirAsia X
28 Sep - 29 Sep	AirAsia X
08 Sep - 29 Sep	AirAsia X
22 Sep - 29 Sep	AirAsia X
01 Sep - 17 Sep	AirAsia X
28 Sep - 05 Oct	AirAsia X
22 Sep - 05 Oct	AirAsia X
28 Sep - 15 Oct	AirAsia X
07 Sep - 10 Sep	AirAsia X
08 Sep - 10 Sep	AirAsia X
07 Sep - 08 Sep	AirAsia X
01 Sep - 10 Sep	AirAsia X
12 Sep - 03 Oct	AirAsia X
14 Sep - 03 Oct	AirAsia X
30 Sep - 05 Oct	Singapore Airlines
26 Sep - 03 Oct	AirAsia X

Also check the deals for one-way flights from Delhi to Penang 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 Delhi to Penang in September from $245

Return flights