Super Cheap Flights
Etc
Penang to Kuala Lumpur $8
Kuala Lumpur to Penang (One Way) $8
Luggage: Including a small bag/backpack.
Hand luggage for an additional charge.
Baggage
Cabin Baggage
All guests (except infants) are allowed to carry on board two (2) pieces of cabin baggage comprising of either:
One (1) cabin baggage or one (1) laptop bag or one (1) handbag or one (1) small bag.One (1) Cabin Baggage:
MUST NOT exceed the dimensions of 56cm (H) X 36cm (W) X 23cm (D).
MUST FIT in the overhead storage compartment in the aircraft cabin.
One (1) Laptop bag or one (1) handbag or one (1) small bag:MUST NOT exceed the dimensions of 40cm (H) X 30cm (W) X 10cm (L).
MUST FIT under the seat in front of you.
The total weight of both pieces must not exceed 7kg.
More about luggage here
You can check URLAUBS TRACKER website for more flights and dates.
Credit to MyDealz & URLAUBS TRACKER
FYI; If you are going to book these - book direct with AirAsia as addons will be far cheaper in comparison to booking with a third party and then adding baggage either through the third party when booking or with AirAsia afterwards.