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Perth to Sydney flight delays and cancellations
1.5% of Perth to Sydney flights were cancelled in the twelve months to September 2026, and 75.5% left on time. That is below the national rate of 1.9%.
5,243 flights were scheduled from Perth to Sydney over the twelve months to September 2026, about 14 a day. 1.5% of them were cancelled, which is below the national rate of 1.9% and puts it around the middle of the 92 routes BITRE publishes. 75.5% of the flights that did operate left within 15 minutes of schedule. In practical terms that is about one cancellation in every 67 flights on this route.
Perth to Sydney at a glance
Cancelled1.5%
Departed on time75.5%
Flights a year5,243
Cancellations79
Cancellation rate is cancellations divided by flights scheduled. On-time rate is on-time departures divided by flights flown, because a flight that was cancelled cannot also have left late. Each direction is counted separately: Sydney to Melbourne and Melbourne to Sydney are different flights with different records.
Which airline is most reliable on Perth to Sydney
Qantas cancelled 1.1% of its flights on this route and Jetstar 3.8%. Same airports, same weather, same twelve months, so the difference is the airline: schedule, aircraft type and how much slack it leaves in the day.
| Airline | Cancelled | On time | Flights |
|---|---|---|---|
| Qantas | 1.1% | 73.5% | 2,481 |
| Virgin Australia | 1.2% | 82.1% | 2,071 |
| Jetstar | 3.8% | 62.6% | 691 |
An airline needs 200 scheduled flights a year on the route to appear here. Codeshare flights are reported by the airline that operates them, so a Qantas-numbered flight flown by QantasLink counts as QantasLink.
The worst months to fly Perth to Sydney
March is the month to avoid on this route, at 2.5% cancelled against 0.9% in April. If the trip can move, moving it is worth more than any airline choice you could make.
Month by month, over the last two years
It has been steady, running near 1.4% over the last six months.
See the monthly figures as a table
| Month | Cancelled | On time | Flights |
|---|---|---|---|
| January | 1.2% | 75.6% | 1,372 |
| February | 2.4% | 72.8% | 1,172 |
| March | 2.5% | 76.6% | 1,271 |
| April | 0.9% | 79.9% | 1,285 |
| May | 1% | 80.1% | 1,215 |
| June | 2% | 73.1% | 1,177 |
| July | 2.2% | 69.8% | 1,319 |
| August | 2.1% | 64.9% | 1,244 |
| September | 1.3% | 67.9% | 1,266 |
| October | 1.6% | 62.5% | 1,278 |
| November | 1.8% | 60.6% | 1,241 |
| December | 1.9% | 66.1% | 1,341 |
The flight home
The return leg is a different flight with a different record: Sydney to Perth is cancelled 1% of the time, less often than the outbound. Morning departures generally do better than evening ones on any route, because a delay early in the day follows the aircraft around for the rest of it.
If it is cancelled
About 79 Perth to Sydney flights were cancelled over the last twelve months, so on this route it is worth knowing the answer before you are standing at the desk. Australia has no fixed compensation payment like the European one. If the airline caused it you can ask for a refund or a seat on the next flight, on any carrier, and most airlines will cover a meal and a hotel. If it was weather or air traffic control, you get the later flight or your money back and nothing else.
Booking Perth to Sydney
You know the route's record now. This searches fares from Australia, on every airline flying them.
Fares are searched live and are not ours to quote, so these go straight to the search rather than showing a price that would be out of date by the time you read it. We earn a commission if you book, at no extra cost to you, and it does not change the figures above.
Flying domestically? The rules are not the international ones
There is no 100ml liquid limit on an Australian domestic flight, and no need to take your laptop out. There is a quarantine rule on fruit and vegetables between states that catches people constantly.
What is actually worth booking.
New destination guides and side-by-side comparisons for Australian travellers - which eSIM, which travel card, which insurance is worth paying for, and what to sort before you go. Prices in Australian dollars, a few emails a year.
Use this data
Free to reuse, including commercially, with attribution. The underlying counts are BITRE's under a CC BY 3.0 AU licence; the derived figures here - rates, rankings and the month-by-month breakdown - are ours, on the same terms.
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Each file carries a data dictionary explaining what every field means and which denominator it uses.
Cite this page
Before You Fly (2026). Perth to Sydney flight delays. Derived from BITRE domestic airline on time performance data. Retrieved from https://beforeyoufly.com.au/flight-delays/perth-sydney/
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Perth to Sydney flight FAQs
How often are Perth to Sydney flights cancelled?
1.5% of scheduled Perth to Sydney flights were cancelled in the twelve months to September 2026: 79 cancellations out of 5,243 scheduled flights. That is below the national rate of 1.9%. The figures are BITRE's, collected from the airlines each month.
Are Perth to Sydney flights usually on time?
75.5% of Perth to Sydney flights that operated departed within 15 minutes of their scheduled time, against a national average of 78.7%. Virgin Australia was the most punctual carrier on the route at 82.1%.
Which airline is most reliable on Perth to Sydney?
Qantas cancelled the fewest Perth to Sydney flights over the last year, at 1.1% of the 2,481 it scheduled. Jetstar cancelled the most at 3.8%. That is a gap of 2.7 percentage points on the same route in the same months, so it is the airline rather than the weather.
What is the worst month to fly Perth to Sydney?
March is the worst month on this route, with 2.5% of flights cancelled, and April the best at 0.9%. Measured across three years of BITRE data, so it reflects the route's usual pattern rather than one bad month.
Source: Bureau of Infrastructure and Transport Research Economics, domestic airline on time performance, published on data.gov.au under a CC BY 3.0 AU licence. Figures cover the twelve months to September 2026 and were last refreshed 22 October 2026. On time means within 15 minutes of the scheduled time, which is BITRE's definition. This route had 5,243 scheduled flights in the period. All Australian flight delay statistics.