The duopoly

At midnight on 30 October 1990, the Australian government ended the Two Airlines Policy, the legislation that had, since 1952, allowed only two carriers to fly between major Australian cities. [16,17] The policy had kept aviation a regulated duopoly for 38 years. [16,17] Its abolition was supposed to open the market.

What followed was a decade of disruption, consolidation, and ultimately the same structural outcome: two airlines. ² The challengers that entered the market in the early 1990s collapsed. The competitor that appeared most likely to stick, Ansett, folded in 2001 when a combination of mismanagement, deferred fleet renewal, and the shock of September 11 produced the largest corporate job loss in Australian history. ³ And from 2001 onwards, the market settled into the structure it has today: Qantas on one side, and a series of challengers who have been absorbed, bankrupted, or reduced to secondary status.

The duopoly is not the result of law. There is no longer a Two Airlines Policy. On this outlet's reading, it is the result of structural advantages so deeply embedded in the Australian market, including slot control, network depth, loyalty program lock-in, and sheer scale, that every challenger has eventually been ground down by them. [5,10,11]

01The history: deregulation and its aftermath

Australia's domestic aviation history is a recurring story. A dominant duopoly exists. The government deregulates or relaxes entry conditions. New carriers appear. Prices fall. The incumbent responds aggressively. The new carrier runs out of capital, or accumulates losses, or gets absorbed. The duopoly reforms. [2,3,4]

The Two Airline era (1952–1990)

Under the Two Airline Policy, the government-owned Trans Australia Airlines (later Australian Airlines) and a privately owned carrier, Australian National Airways until 1957 and Ansett after it, were the only carriers permitted to fly between major cities. [1,16] The duopoly was explicit, legislated, and complete. ¹ Notably, scheduled flights on the same routes would take off about five minutes apart, one airline following the other, in a market so regulated that even departure timing was managed. ¹

When deregulation was announced in 1987 and took effect in 1990, both incumbents prepared for competition. ⁴ The government simultaneously decided to merge Qantas and Australian Airlines, giving Qantas, which had previously been restricted to international flights, a 'fully developed domestic airline system,' ⁴ while Ansett was given international rights it had to build from scratch. ⁴ This decision proved consequential: Qantas entered the newly competitive domestic market with an already-mature operation. ⁴

The challengers of the 1990s

Compass Airlines launched in December 1990, offering fares far below the incumbents. ² It attracted strong demand and collapsed in December 1991, just thirteen months after launch. ² A second attempt, Compass Mark II, began flying in August 1992 and failed in March 1993. ¹⁶ The failures prompted the government to stabilise the market through a temporary one-nation aviation policy. ⁴

The early failure of Compass established the pattern that would repeat for the next three decades: a new carrier could enter, attract passengers with low fares, and briefly disrupt the incumbents, but the capital requirements of aviation, the established network advantages of Qantas and Ansett, and the incumbents' willingness to match prices on contested routes made sustained profitability extremely difficult. [2,3]

Ansett's collapse (2001)

Ansett Australia's collapse on 14 September 2001, grounded the same week as the September 11 attacks in the United States, was the most significant single event in Australian aviation history. ³ The airline had operated for 65 years. It employed tens of thousands of people. Its failure left Qantas with approximately 70 per cent of the domestic market and no credible full-service competitor. [2,3]

The collapse had been building for years. Ansett had been burdened by poor investment decisions under previous ownership, a deferred fleet renewal programme, and costs significantly above those of the emerging low-cost competitor Virgin Blue. [3,4] Air New Zealand, which had acquired Ansett, could not absorb the losses, estimated at A$1.3 million per day in the final months. ⁴ The New Zealand government bailed out Air New Zealand but not Ansett. ³

The lesson Qantas drew from the Ansett collapse was not competition. It was the Jetstar strategy.

Correction, 19 October 2026. This section said that Compass Mark II “collapsed in 1992”. The second Compass began flying in August 1992 and failed in March 1993 ¹⁶; reference 2, which says it also collapsed in 1992, does not support the date. The section also named Ansett as the second carrier throughout the Two Airline era. Australian National Airways held that place until 1957, when Ansett acquired it ¹⁶. The introduction and the timeline gave 30 October 1990 for the end of the Two Airlines Policy. The Bureau of Transport and Communications Economics, in its 1991 study of the first year of deregulation, says the policy 'came to an end at midnight on 30 October 1990' and that the Government had given notice in October 1987 that it would terminate the Airlines Agreement ¹⁷; it is now cited for that date and, with the Parliamentary Library chronology's entry for 30 October 1952, when the policy was enacted ¹⁶, for the 38 years; the earlier citation was a Wikipedia page ¹ alone. The Parliamentary Library chronology dates the commencement of domestic airline deregulation to 31 October 1990 ¹⁶, which is a day after the midnight on which the policy ended, so the introduction and the timeline now date the end of the policy to midnight on 30 October 1990.

02The Jetstar response

When Virgin Blue appeared in 2000 with fares substantially below Qantas, Qantas faced a competitive threat on its most profitable routes. [2,3] Rather than match Virgin's prices across its own network, which would have destroyed its margins on full-service routes, Qantas launched Jetstar as a separate low-cost brand in 2004, with Alan Joyce as chief executive. [2,3]

The Jetstar strategy was precise: compete with Virgin Blue on price-sensitive leisure routes while maintaining Qantas's premium positioning on business and corporate routes. ¹⁰ The structural effect was to divide the market between Qantas Group brands, with Qantas serving corporate travellers and Jetstar serving leisure travellers, and leave Virgin competing against a two-brand adversary with shared infrastructure, fleet, and loyalty ecosystems. ¹⁰

03The challenger record: every attempt, every outcome

The record is eight challengers. Zero sustained independent competitors. The only airline that has survived is Virgin Australia, and Virgin has done so by abandoning the low-cost model that originally made it a genuine competitive threat, repositioning as a mid-market carrier, going through voluntary administration during COVID, and accepting Bain Capital as a private equity owner. ¹¹ It is now a competitor to Qantas in the conventional sense, but it is not a disruptor. The ACCC's own reports consistently describe it as part of the 'duopoly' that structures the market. ¹¹

Correction, 15 October 2026. The figure above, in the brief, the key facts, the timeline, the tile and the hero image, said that Qantas Group and Virgin Australia held 94.4 per cent of domestic passenger carriage in March 2025, and cited a Switzer Daily article ¹¹. That article, read in the Internet Archive's copy of 24 January 2026, gives 94.4 per cent, but the figure does not appear in the ACCC's May 2025 report ¹⁰. The ACCC reports that Qantas Group carried 63.9 per cent of passengers in March 2025, Virgin Australia 34.4 per cent and Rex 1.7 per cent, so that the two largest domestic airline groups together carried 98.3 per cent (p. 21) ¹⁰. The article now says 98.3 per cent and cites the ACCC.

04The slot system: the physical control of competition

Market power and brand loyalty explain part of why challengers fail. But there is a more fundamental structural barrier to competition in Australian aviation: the physical control of landing and take-off slots at Sydney Airport.

Sydney Airport operates under a movement cap of 80 flights per hour. [5,9] There are 1,360 movements per day. ⁹ At peak hours, when business travellers want to fly, when slots are most valuable, there is no spare capacity. [5,9] A new carrier cannot simply start flying Sydney routes during peak hours because there are no slots available. [5,8]

Who allocates those slots? From 1997 until April 2025, the answer was Airport Coordination Australia, which Reuters described as a joint venture between Qantas and Virgin Australia. ⁷ Rod Sims, the former ACCC chair, told the Senate inquiry on 27 September 2023 that it was, to his understanding, majority owned by Qantas and Virgin. ¹⁸ The two airlines whose market dominance created the need for a slot management system were, themselves, the managers of that system. [5,7]

The 80/20 rule allows an airline to cancel up to 20 per cent of its flights in a season without forfeiting its slots. [5,14] The accusation was that Qantas was strategically timing and rotating cancellations across its slot portfolio to maintain slot holdings while operating below capacity. [5,15] The effect: slots that could be reallocated to competitors were retained by the incumbent. ⁵ The ACCC-commissioned analysis by former Qantas chief economist Tony Webber found cancellation rates across all airlines remained higher than pre-pandemic averages. ¹⁵

Correction, 19 October 2026. This section said that from 1997 until April 2025 the slots were allocated by Airport Coordination Australia, 'a joint venture owned by Qantas and Virgin'. Reuters describes Airport Coordination Australia as the joint venture between Qantas and Virgin Australia that 'has allocated slots in Sydney since the original scheme was legislated in 1997' ⁷; it does not say who owned the company in 1997, and Virgin did not begin flying until 2000. Professor Rod Sims told the Senate inquiry that the company is, 'to my understanding, majority owned by Qantas and Virgin' ¹⁸. The text, the timeline and the key facts now attribute the joint venture to Reuters and the ownership to Sims, and the claim that the duopoly ran the system for 28 years, which rested on the 1997 date, is withdrawn here and in the later sections.

05The Qantas-Virgin slot manager: the arrangement ends

The government eventually acted. In February 2024, Transport Minister Catherine King announced reforms to the slot system: increased transparency, independent audits, civil penalties for slot misuse. ¹⁴ The 80/20 rule survived unchanged. ¹⁴

More significantly, when the slot manager role came up for re-tender, King signalled that the Qantas-Virgin joint venture would face tough conditions if it won again. ⁷ It did not win. In February 2025, the government announced that Britain's Airport Coordination Limited, ACL, which manages slots at Heathrow, Gatwick, Dubai, and 75 other major airports globally, would take over from the incumbent from 1 April 2025. [7,8]

ACL's CEO was candid in his assessment of what he was inheriting. [7,8] He noted that Qantas and Virgin 'were not using their allocated capacity anywhere near the levels at overseas airports such as Heathrow.' ⁷ Under ACL's management, airlines face stricter use-it-or-lose-it enforcement. ⁸

The arrangement in which a joint venture of the two airlines managed access to their own constrained slots is over. ⁷ Whether ACL's independent management changes the actual allocation of peak slots, and opens space for new entrants, will not be known for some time. ⁸

Until April 2025, Sydney Airport's limited peak-hour slots, the most valuable access rights in Australian aviation, were managed by a company that Reuters described as a joint venture between the two airlines that dominated the market. A new entrant seeking a peak-hour slot to compete with Qantas and Virgin was asking their joint venture for permission to do so.

Correction, 19 October 2026. This section's heading, its fourth paragraph and the closing pull quote described a '28-year arrangement' in which the two airlines managed their own slot system from 1997. For the reasons given in the section on the slot system, the heading and text no longer give the duration, and the pull quote now says the slots were managed until April 2025 by a company Reuters described as a joint venture between the two airlines ⁷.

06Why challengers fail: the full picture

The slot system is the most visible structural barrier. There are others. [5,10,11]

Network depth and connecting traffic

Qantas operates an extensive network of regional and interstate routes. A challenger on the Sydney–Melbourne route faces not just direct competition but the disadvantage that many travellers want to connect through Sydney or Melbourne to other destinations. ¹⁰ Qantas can offer seamless connections across its network. A single-route entrant cannot. ¹⁰ This network depth is a competitive moat built over decades that cannot be replicated quickly or cheaply.

The loyalty program lock-in

As this series will document in Article 5, Qantas Frequent Flyer had 17.6 million members at June 2025. ¹⁹ A challenger airline cannot offer these members equivalent rewards. Points accumulated over years of Qantas flying are not transferable. Switching to a challenger means forfeiting accumulated status and reward seats. ¹⁰ The loyalty program is not just a consumer benefit. It is a structural retention mechanism that increases the cost of switching to a competitor.

The corporate travel lock

Qantas holds approximately 80 per cent of the corporate travel market. ¹⁰ Corporate travel is the highest-margin segment: business travellers are price-inelastic, travel frequently, and fill the premium and business cabin seats that generate disproportionate profit. ¹⁰ Any challenger must either accept being excluded from this segment, competing only for leisure travellers who are more price-sensitive and less profitable, or build the corporate relationships, frequent flyer status recognition, and business lounge infrastructure that Qantas has developed over generations. ¹⁰

Capital requirements and scale

Aviation is extraordinarily capital-intensive. Aircraft cost hundreds of millions of dollars. Maintenance facilities, trained crews, airport gates, and ground handling all require sustained investment. ³ A new entrant must fund losses during the period it is establishing routes and building load factors, often years, before reaching profitability. [3,11] Both Bonza and Rex ran out of that runway. Both faced aircraft delivery delays that compounded their cash positions. [11,13]

Correction, 19 October 2026. This section said Qantas Frequent Flyer has more than 15 million members, roughly 50 per cent of the Australian adult population, citing the ACCC's May 2025 report ¹⁰; that report carries neither figure. Qantas's 2025 annual report gives 17.6 million members at June 2025 ¹⁹, and the text, the summary tile and the key facts now say so, without a share of the population.

07The rort

Australia's aviation duopoly is not the result of law. The Two Airline Policy was abolished in 1990. [1,17] On this outlet's reading, it is the result of structural advantages so deeply embedded in the market that the same two-carrier structure has re-emerged every time it has been challenged, across 35 years and eight separate attempts. [2,3,11]

Each time a challenger appeared, fares fell. [2,11] Each time the challenger failed, fares rose again. ¹¹ The ACCC documents this cycle precisely in its quarterly reports. ¹¹

The slot management system, run until April 2025 by a Qantas and Virgin joint venture, was one mechanism through which the physical infrastructure of competition was controlled. [5,7] Its replacement with an independent manager from April 2025 is a genuine reform. [7,8] Whether it is sufficient is another question: the slot system is one of several barriers, not the only one. [5,8]

Article 3 of this series examines a moment when competition could have entered the market from the outside, and the government blocked it.

If it's a rort, we cover it.

Update, 19 October 2026. The opening of this section and the opening of the article said the duopoly 'is the result of structural advantages'. That is this outlet's reading of the record, not a finding of any source cited, and both passages now say so. The reference to slot management 'for 28 years' is replaced for the reason given in the section on the slot system.