Cheap flights from Adelaide to Sydney from $125

The month of January is, on average, the cheapest month to fly to Sydney from Adelaide, with most prices found around $248. If you aren’t able to travel to Sydney during the month of January, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $273.

Our data shows that Saturday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $344. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $422.

According to our data, the cheapest time of day to fly to Sydney is in the evening. momondo users have found flights departing from Adelaide to Sydney in the evening for as low as $302. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are $600 on average. Flights to Sydney from Adelaide at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from Adelaide to Sydney Kingsford Smith for the best Adelaide - Sydney Kingsford Smith flight prices

You are more likely to see cheaper flights to Sydney from Adelaide when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $294 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Adelaide for as low as $262 on momondo.

There are 4 cabin classes available to choose from on Adelaide to Sydney flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Jetstar is the most popular carrier operating from Adelaide to Sydney Kingsford Smith

Jetstar, Virgin Australia and Qantas Airways are the top three most popular airlines that fly to Sydney from Adelaide according to our data. Jetstar is the first choice among our users, with 71% of people opting to fly with this airline when travelling to Sydney. Keep in mind that there are 3 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Historically, on average around 16% of flights between Adelaide and Sydney have experienced a delay on any given week. The average delay length over the past 12 months has been 91 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Qantas Airways have had the fewest delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

As of September 2026, there are 86 flights per day flying from Adelaide to Sydney. The most common time of day flights depart is 06:00, with 45% of flights taking off at midday.

603 flights are operational weekly from Adelaide to Sydney as of September 2026. The most popular departure day for this route is Mon, with 20% of flights per week taking off on this day.