Had a good browse on the Qantas site re air fares at different times of year. There's a vast difference.
For 2011 in £s approx
First 2 weeks jan is 1350
mid jan to mid feb is 1170
mid feb to end march is 800
first 2 weeks april is 800
mid april to 20 june is 750
21 june to end june is 1100
1 july to mid aug is 1360
mid aug to end nov is 1100
i dec to 13 dec is 1200
14 dec to 23 dec is 1600
24 dec to 31 dec is 1360
We initialy planned to go mid july to end aug i.e. in one of the dearer slots.
However we could go April to mid May.
We don't want to "spoil the ship for a ha'poth of tar" and are not tight fisted, but if we were to save a lot on the flights we could spend it on more treats once there.
Reason for july /aug was best weather in Cairns, coolest in Sydney (we're not to great in heat,) We realise aug in melbourne can be cold wet and windy.
But how would Cairns be in april and sydney melb be in mid May?
If you have read my other questions, you will realise I can get a bit obsessive planning holidays. Drives OH nuts. However I think it is worth taking the trouble to research deeply. and value the experience of those on this site who have helped so far.
Friends of ours who are much more impulsive, once saw an advert in a travel agents window for the Caribean and booked there and then. They thought they were going to the Dominican republic, which is an upmarket resort island. When they got there they found they were actualy in the island of Dominica which allthough nice in it's own way wasn't what they were expecting. Also a party of 8 we met who had popped over for the day to the island of Korcula, Croatia from the adjacent mainland, were staying in the wrong hotel. They thought they had booked for a posh place 75 miles away, in Dubrovnik, by the same same. The 4 women had taken stylish clothes for the evenng, but the hotel turned out cater for the adjacent camp site.