Sydney Airport’s 11 p.m.–6 a.m. curfew is close to absolute, but not airtight. Between 5 a.m. and 6 a.m., a small quota of international arrivals can land — 24 per week and five per day under current rules, down from the 35 and seven the 1995 Act originally allowed.
That quota is why Qantas QF2 and British Airways BA15, both routed through Singapore, can be scheduled to land in Sydney just after 5 a.m. when Heathrow’s night restrictions squeeze the London end of the trip.
Here’s the odd part about Sydney’s curfew: it’s one of the strictest in the world, and it also has a hole in it. Between the 11 p.m. close and the 6 a.m. open, a handful of flights are allowed to land anyway — provided they arrive in the final hour, come in over Botany Bay from the south, and have already been approved by a federal transport official hundreds of kilometres away in Canberra.
That hole is the morning shoulder period. It exists to absorb delays, but carriers such as Qantas and British Airways have learned to schedule into it. QF2 and BA15 are the two flight numbers that keep showing up in public timetable and tracking data: both run London Heathrow–Singapore–Sydney, and both have scheduled Sydney touchdowns inside the 5–6 a.m. window during the northern-summer season.
The result is a quiet scheduling dance between two airport night regimes at opposite ends of the planet. Heathrow’s night-quota period and Sydney’s curfew pinch the journey at both ends, while Singapore sits in the middle as the buffer. What happens in between is the story of how a curfew in one country becomes a landing slot in another.
The one-hour valve
The Sydney Airport Curfew Act 1995 bans most aircraft movements between 11 p.m. and 6 a.m. every day. That part is easy to state and close to absolute in practice.
The exception sits between 5 a.m. and 6 a.m. Under the Act, an international passenger aircraft can land in that hour only when four conditions line up: the movement is on a prescribed timetable, it carries a specific written approval, it uses runway 34L, and it meets Chapter 3 noise limits. The over-water approach from the south, via Botany Bay, is the non-negotiable part of the deal — it exists to keep the noise over water, which is what makes the whole compromise politically viable.
The original baseline allowed 35 landings a week and 7 per day in the shoulder hour, according to AustLII. The 2023 regulations then cut the functional quota to 24 per week and 5 per day, per the Australian Legal Information Institute (AustLII). That reduction from 35 to 24 has held through 2025–26.
What changed in 2023 was the quota, not the curfew. The explanatory statement for the new regulations says the instrument replaces the old one without materially altering which aircraft operations are allowed inside the curfew period — its main job is the shoulder numbers and a separate freight quota. So the 11 p.m.–6 a.m. hours and the Botany Bay conditions stayed intact.
The cap is administered federally, not by Sydney Airport itself. That matters: it’s a national-level gatekeeping function, with the practical effect that fewer than two dozen allowed landings a week have to serve every carrier that might want one.
How a London night rule ends in a 5 a.m. Sydney touchdown
Heathrow runs two overlapping windows at night: a Night Period from 23:00 to 07:00, and a tighter Night Quota Period from 23:30 to 06:00 inside which every movement is counted. The quotas are precise — 2,550 movements in winter and 3,250 in summer, plus 2,415 noise-quota points in winter and 2,735 in summer. Heathrow’s own guidance confirms nothing is currently scheduled to depart between 22:40 and 06:00, or to arrive between 22:55 and 05:05.
So a Heathrow-origin long-haul like Qantas QF2 must leave in the evening, around 20:50. That is the first pinch point. If the departure slips, the margin is thin, and any delay ripples through the Singapore stopover rather than being absorbed at the London end.
Then Sydney’s 11 p.m.–6 a.m. curfew becomes the second pinch point. QF2’s timetable for 3 April to 1 October 2026 schedules the Singapore–Sydney sector to arrive at 05:10 AEST. Tracking from 14 September 2026 shows exactly that touchdown — a landing inside the one legally soft hour.
British Airways BA15 follows the same shape. Its timetable held a 05:20 Sydney arrival until early October 2025. From 4–26 October, the scheduled arrival shifted to 06:20–06:55 — a small late-season change that moved the flight out of the shoulder window entirely.
The chain is most plausible as a scheduled rhythm rather than a documented, day-by-day delay record. Both flights lean on the shoulder in the northern-summer season, when the London night regime and Sydney’s curfew clamp timing at both ends. Singapore absorbs whatever slack the London side creates; the Sydney touchdown then depends on whether an approved quota slot is there to meet it.
Only two flight numbers could be tied to specific 5–6 a.m. arrivals in the most recent 12 months — a reminder of how narrow the valve is.
| Flight number | Operator | Origin and routing | Scheduled Sydney arrival time | Example dates of 5–6am use |
|---|---|---|---|---|
| QF2 | Qantas | London Heathrow – Singapore – Sydney | 05:10 AEST | 14 September 2026 (Singapore–Sydney sector arrived 05:10); additional dates in September 2026 show the same 05:10 arrival pattern |
| QF2 (seasonal variation) | Qantas | Singapore – Sydney (following Heathrow–Singapore leg) | 06:10–06:25 AEST | Timetable segments for March and October 2026 show arrivals at 06:10 or 06:25, just outside the shoulder’s upper edge |
| BA15 | British Airways | London Heathrow – Singapore – Sydney | 05:20–05:20 AEST | Timetable data valid until 3 October 2025 shows BA15 arriving Sydney at 05:20, the shoulder structurally baked in |
| BA15 (late-season variation) | British Airways | London Heathrow – Singapore – Sydney | 06:20–06:55 AEST | From 4 October 2025, BA15’s Sydney arrival shifts to 06:20–06:55, moving a Heathrow-origin flight out of the shoulder window |
| Unspecified curfew movements | Multiple carriers | Sydney Airport – curfew and shoulder operations | Varies by movement | Forum summaries sort recent curfew movements by category without flight numbers, so these rows are aggregated, unverified at flight-number level |
| Source: Flightmapper; FlightStats; Sydney Airport Community Forum (Airservices/Sydney Airport) | ||||
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Why QF2 and BA15 — not the next flight
The approval is federal, specific and one-off. An airline licence holder writes to the Commonwealth transport department’s Secretary seeking approval for one named movement on a set date — a landing inside the 5–6 a.m. window, or a take-off or landing between 11 p.m. and midnight — provided quota limits allow it and overseas curfews or capacity problems justify the timing. The permission attaches to the movement, not to a flight number permanently.
That explains why QF2 and BA15 don’t hold a standing right. They have been granted movement-by-movement access that their schedules lean on season after season, because both are Heathrow-origin, Singapore-routed services squeezed by London’s night regime at one end and Sydney’s curfew at the other — the textbook “overseas curfew” trigger the legislation describes.
The public record does not detail why these two flights, rather than a competing service, cleared the bar at any given moment. That’s a gap in the official paper trail, not in the logic of the mechanism. And on 14 September 2026, QF2 finished the London–Singapore–Sydney run at 05:10 AEST — one of just a few landings legally possible in that hour. Passengers came down over Botany Bay in the dark and walked into a terminal that had opened only a couple of hours earlier.
Key terms
- Shoulder period
- The final hour of Sydney’s overnight curfew, from 5 a.m. to 6 a.m., when a limited number of international passenger landings are permitted. The quota is set federally and currently allows 24 landings per week and 5 per day. QF2 and BA15 both schedule Sydney touchdowns inside this window during the northern-summer season, when Heathrow’s night restrictions constrain their London departure times.
- Night Quota Period
- Heathrow’s tighter overnight window, running from 23:30 to 06:00, inside which every aircraft movement is counted against a fixed limit. The quota allows 2,550 movements in winter and 3,250 in summer, plus separate noise-quota points. This is the London-end constraint that pushes QF2 and BA15 into evening departures and, ultimately, into Sydney’s shoulder period.
- Runway 34L
- Sydney Airport’s north-south runway, approached from the south over Botany Bay. The Curfew Act requires shoulder-period landings to use this runway so that noise stays over water. It is the physical condition that makes the 5–6 a.m. exception politically acceptable.
- Chapter 3
- An international aircraft noise standard set by ICAO that limits how loud an aircraft can be during takeoff and landing. The Sydney Curfew Act requires shoulder-period landings to meet this standard. It is one of four conditions a flight must satisfy to land between 5 a.m. and 6 a.m.
Questions? Answers.
How strict is the Sydney airport curfew?
The 11 p.m.–6 a.m. curfew is close to absolute. The narrow exception is a 5–6 a.m. shoulder window for international passenger landings, capped at 24 per week and 5 per day under the 2023 regulations — down from the 35 and 7 the 1995 Act set. The 2023 change did not otherwise alter what can fly.
Is there a curfew at Sydney Airport today?
Yes. The 11 p.m.–6 a.m. curfew remains in force. The 2023 regulations kept the hours unchanged and only reset the shoulder-period quota at 24 weekly landings and 5 daily, down from the Act’s 35 and 7.
Can planes take off after 11pm in Sydney?
Almost never. A take-off between 11 p.m. and midnight needs written approval from the federal transport Secretary for one named movement on a set date, under section 12(4) of the Act. The separate 5–6 a.m. landing window is capped at 5 per day and 24 per week.
What time does Sydney Airport close at night?
Terminal 1 International closes around 23:00 and reopens around 02:30–03:00; domestic terminals generally run from 04:00 to about 23:00. The 11 p.m.–6 a.m. runway curfew means the airport is largely closed to aircraft movement at night even when terminals are open.
