20060702-The difference between AU124 and AU159

Today, I surveyed the flight ticket from Cairns to Brisbane.
I had three choices for Australia domestic flight, Qantas, Virgin Blue and Jetstar.
Actually, the Qantas airline is the most expensive, so I didn't need to consider it.
Virgin Blue and Jetstar can provide us with cheap flight ticket.
When I surveyed their website, I found the price was AU124 in Jetstar and AU159 in Virgin Blue.
I was certain to choose Jetstar, but it was awful when I read the Important Information of flight.

Here is the first item of the Important Information:
Flights or Schedules May Change or be Cancelled
Jetstar does not guarantee it will be able to carry you and your Baggage in accordance with the date and time of the flights specified. Schedules may change and flights may be delayed or cancelled for a range of reasons including but not limited to bad weather, air traffic control delays, strikes, technical disruptions, network changes and late inbound aircraft (refer to section 9.1 of the Conditions of Carriage for more information). Please ensure accurate passenger details are provided in step 4 of the booking process so any changes can be notified. To the extent permitted by law, Jetstar excludes liability for any costs, expenses, losses or damages incurred by the Passenger as a result of failure to meet a schedule.

Yes, if i buy the Jetstar's flight ticket, maybe I can't take the flight on time or the flight will be cancelled.= =
I need the flight to go back Brisbane and then take a airplane to go back taiwan.
I want the cheapest flight ticket...
I want to come back to Brisbane on time....
Taking Jetstar is a bet...ORZ...