AirAsia's ASEAN pass gets you a month of flights in south-east Asia for $206

After a six-week postponement, AirAsia have finally launched their ASEAN pass, opening up southeast Asian travel across 140 of their routes for a mere $US160 ($A206).

The ASEAN (Association of South-East Asian Nations) pass is now available for purchase and will allow you to fly to destinations in Thailand, Vietnam, Cambodia, Myanmar, Philippines, Laos, Brunei, Singapore, and Indonesia.

The pass is valid for 30 days, and entitles travellers to ten credits' worth of flights.

Credits value the length of each flight; so a short hop from Bandung to Singapore would be one credit, however, a longer flight from Bangkok to Singapore, for example, would equal three. The base 'promo' or sale fare of a flight such as this, booking two weeks in advance, normally costs around $A60.

Longer, 60-day passes will also be available for $US290 ($A373) and offer 20 credits' worth of flights.

However, booking a last-minute weekend trip to a full-moon party at the beach will not be possible as the pass requires that the purchaser books at least 14 days in advance.

Credits can only be redeemed on the base fare of the flight, so extras such as check-in baggage and meals will be added on to the cost of the flight, as will airport tax (on AirAsia flights, the costs of each of these things tends to be minimal anyway).

The pass was originally intended for sale from January 15, but was postponed in light of the AirAsia Indonesia Flight 8501 crash.

Chief Executive Tony Fernandes said the AirAsia ASEAN Pass will be the "catalyst" for increased air travel within south-east Asia and will also lure foreign tourists.

AirAsia, which has dominated cheap travel in the region for years, faces rising competition from the proliferation of discounts airlines in Asia, the world's biggest and fastest growing air travel market.