The best month to fly between Sydney and Adelaide is February and the most expensive month to fly is March. (Average prices, based on 1000 datapoints.)
The best day to arrive at Sydney is Friday and it would be best to avoid Monday, as prices are on average 430.2% higher than on Friday. (Average prices, based on 4196806 datapoints.)
The cheapest airline flying from Sydney to Adelaide is JetStar Airways. They are 49% cheaper than Qantas. (Average prices, based on 1012 datapoints.)
The best time to fly is at around 6. (Average prices, based on 1111 datapoints.)