Cheap flights from Adelaide to Sydney from £63

In general, August is the cheapest month to fly from Adelaide to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £122. If you don’t want to visit Sydney in August, then you should wait until January to fly from Adelaide, when ticket prices are also cheap, with an average price of £128.

The cheapest day to depart on your flight to Sydney is on a Monday when prices can be found for as low as £134. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday is the most expensive day to depart from Adelaide because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £231.

According to our data, the cheapest time of day to fly to Sydney is in the morning. momondo users have found flights departing from Adelaide to Sydney in the morning for as low as £141. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At midday is when there is more demand to fly to Sydney, so prices are often more expensive at around £179 per ticket.

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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 £144 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 £127 on momondo.

There are 3 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.

Historically, on average around 17% 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 88 minutes.

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

Saturday 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 13% of their flights experiencing any sort of delay.

As of June 2026, 91 flights take off from Adelaide and land in Sydney each day. The most common flight departure time for this route is 06:00, with 49% of daily flights taking off at midday.

As of June 2026, 642 flights take off from Adelaide and land in Sydney each week. The most common flight departure day for this route is Fri, with 18% of weekly flights taking off on this day.