Second-Hand Planes Are Out: Inside Allegiant’s Fleet Development

For years, Allegiant’s fleet has primarily consisted of second-hand aircraft. It has traded low aircraft ownership costs for higher fuel consumption and maintenance costs. To make it work, it used aircraft infrequently. Its MAX order somewhat changes this and spells a new era for the carrier.

Allegiant Washington Dulles
This aircraft (N334NV) was previously used by Cebu Pacific and entered Allegiant’s fleet in 2017. Photo: Dulles International Airport.

Allegiant’s current fleet

Allegiant’s fleet comprises 121 aircraft with an average age of 13.4 years, according to While often perceived as a relatively small operator, it has more narrowbodies than many other well-known airlines, including Malaysia’s AirAsia, KLM, SWISS, Volaris, and WestJet. Allegiant’s fleet is entirely Airbus and consists of:

  • 86 A320s with either 177 or 186 seats
  • 35 A319s with 156 seats
Allegiant's fleet
Allegiant passed 20 million seats last year and has doubled in size in only a few years. Source of data: Cirium.

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How has its fleet developed?

Allegiant is renowned for many things, including being leisure-driven, serving thin routes, low frequency, secondary or otherwise quieter airports, small cities, high ancillary revenue, minimal flying on off-peak days, and used aircraft. And until November 2018, it was also known for its old and gas-guggling – but always loud and characterful – MD-80s.

For years, the ULCC has focused on older aircraft. They were cheap to acquire but more expensive to use. The carrier traded off lower fixed costs (i.e., expenses that remain the same regardless of asset use) with higher variable costs (i.e., expenses incurred when the aircraft are used).

It achieved this because of very low aircraft ownership costs and from having few block hours per day (compared to most other airlines). It primarily operates four days a week, as shown below, when demand is higher and it doesn’t need to discount even more to grow demand. It’s a very similar approach to Breeze and its second-hand Embraer 190s/195s.

For Allegiant, not all days are created equal
Allegiant’s top day this week is Sunday. It has 20x the number of seats for sale compared with Tuesday. Source of data: Cirium.

A step-change in Allegiant’s fleet composition

Aside from its B757s, which were ring-fenced and pretty much about Hawaii, the step-change in Allegiant’s fleet composition is clear to see in the first figure above. The use of bigger aircraft has significantly reduced seat-mile costs and increased revenue-generating opportunities, ensuring increased competitiveness.

While its A319s and A320s were second-hand (some A320s were new), they were much newer than its MD-80s. Ownership costs rose, but it was offset by a big reduction in fuel consumption and increased operational reliability. They were pivotal in the airline’s development.

Allegiant MAX
Operational complexity and particular costs will rise as it moves away from effectively a single fleet. However, after an airline reaches a certain size, a dual fleet becomes less of a problem, and it’ll probably be helped by financial support from Boeing. Photo: Allegiant.

Incoming B737 MAXs

As widely reported, the next stage of Allegiant’s development involves the B737 MAX. It has a firm order for 50, split between the MAX 7 and MAX 8-200, the latter the same as Ryanair, as well as 50 options. They’ll coexist with its Airbus aircraft. There are multiple reasons why it chose the MAX, including aircraft availability, the deal secured, and far lower fuel consumption.

They’ll pave the way for the next stage of the airline. However, because they’ll be brand-new and much more expensive, the fixed cost-variable cost balance will likely change. To reduce the higher cost of ownership per seat-mile, Allegiant will probably use its MAX aircraft much more intensively than its A319s/A320s.

What do you make of the development? Let us know in the comments.