Integrated airline productivity performance evaluation with CO2 emissions and flight delays

This paper evaluates the airline productivity change by applying a modified global Malmquist productivity index (GMPI) model, incorporating both CO₂ emissions and flight delays. Statistical inference is also performed on the GMPI results using the bootstrapping method. Empirical research was conducted on 15 international airlines during 2011-2017. The obtained results showed that the productivity of all airlines had been fluctuating and experienced a slight increase over 2011–2017. Most of these 15 airlines made more progress in managing punctuality than CO₂ emissions. High punctuality policy may not be the best choice for all airlines when considering financial constraints, while airlines in more liberalized aviation markets are more likely to improve productivity by reducing flight delays. Efficiency change and technological change were the major driving factors for the growth of airline productivity. European and US airlines benefitted more from superior technology, while most Asian and Oceanian airlines still benefitted from the advantage of efficiency. Based on the findings, specific management advice was given.     

Evaluating corporate social responsibility of airlines using entropy weight and grey relation analysis

This paper applies entropy weight and grey relation analysis to evaluate corporate social responsibility (CSR) performance of eight Chinese major airlines. This paper intends to achieve two main aims. First, this study uses entropy to find the relative weights of performance measures of CSR. In so doing, we find that on-time performance, accident rate, flight frequency, growth of employees revenue, and employees revenue are relatively most important measures. Second, based on the results of entropy analysis, this study ranks the airlines in terms of CSR performance by grey relation analysis. This result shows that most of the larger state-controlled airlines perform better in performance of CSR. Furthermore, the private airline has made relatively large improvement in its CSR performance. In addition, the listed airlines are better than non-listed airlines in CSR performance.     

CNG2020 strategy and airline efficiency: A Network Epsilon-Based Measure with managerial disposability

In this paper, we analyze the impacts of CNG2020 strategy on the efficiency of 29 international airlines during 2021–2023. Predictions are made through neural networks based on the empirical data from 2008 to 2015. Following the principle of CNG2020 strategy, we calculate the emission limit for each airline. Then we propose a new model, Network Epsilon-Based Measure with managerial disposability, to discuss the difference in efficiency of the airlines when the CNG2020 strategy is considered. The main findings are: (1) For most of these 29 airlines, the CNG2020 strategy has little influence on their efficiency. (2) The efficiency has little variation under the following conditions: when the carbon price is 8 $/ton CO₂-eq, when the price is 14 $/ton CO₂-eq, and when the price is 20 $/ton CO₂-eq. (3) Scandinavian is identified as the benchmarking airline.     

An analysis of the greenhouse gas emissions profile of airlines flying the Australian international market

International commercial flights (with the exception of flights between countries in European Union including Iceland, Norway and Liechtenstein) are currently not subject to greenhouse gas emission reduction regulation. To formulate effective and efficiency policy to manage greenhouse gas emissions from air transport, policy makers need to determine the emissions profiles of all airlines currently flying into their country or region. In this paper, we use 2012 data on airlines' aircraft characteristics, passenger load and cargo load (obtained from statistics reported by Australian Government Bureau of Infrastructure, Transport and Regional Economics) to estimate the volume and carbon efficiency on each international route flying to and from Australia. This is the first study to use actual passenger and cargo load data to determine the greenhouse gas (specifically CO₂) efficiency of airlines operating in the Australian international aviation market. Airlines' CO₂ emission profile is dependent on many factors including but not limited to the aircraft used, payload, route taken, weather conditions. Our results reveal that the airlines’ CO₂ emission profile is not only dependent on the aircraft used and the number of passengers but also the amount of cargo on each flight.     

Multi-period efficiency and productivity changes in US domestic airlines

This study tracked the static efficiency and dynamic productivity changes of 14 US airlines from 2006 to 2015. Moreover, we estimated the principal economic drivers of the environmental variables to increase the US domestic airlines' efficiency using the double bootstrap regression analysis. The major aspects of this study are as follows: First, network legacy carriers have the highest efficiency, whereas low-cost carriers are lowest. Nonetheless, network legacy carriers still have room to improve scale inefficiency. Second, the fluctuations in technical change, rather than in efficiency change, tended to have greater effect on the fluctuation of Malmquist productivity index for US domestic airlines. Third, M&A between US airlines have both positive and negative effects in terms of efficiency and economies of scale. Fourth, cost environmental factors have a negative effect on US airlines' efficiency, while revenue factor is a positive effect. The results of this study may help US airline industry practitioners to understand the US domestic airline environment from an operator's perspective.     

Network competition and the difference in operating cost: Model analysis

In this paper, we propose a bi-level air transport market model which can handle the shape of network, airfare and service frequency as airline’s control variables and passenger’s behavior. We apply the model to the simple duopolistic market and observe how airlines change their network shape. We assume two types of airlines, the incumbent and the entrant, having different operating cost and conduct numerical computation. From the results, we discuss the features of network equilibrium considering difference in operating cost and confirm that inviting low cost carriers contributes to improving social welfare.     

Will the EU-ETS instigate airline network reconfigurations?

Based on the proposal of the European Commission on including the aviation sector into the European Emission Trading Scheme, a route-based analysis is conducted simulating cost and demand implications for selected airlines. For a scenario of €20/tons CO₂, results indicate that the EU-ETS CO₂-based cost increases for the airlines are between €9 and €27 per route and therefore, as an individual factor, are not high enough to instigate major route reconfigurations among European airlines.     

A productivity comparison of the world's major airlines

This paper measures and compares productivity and unit cost of the world's 23 major airlines using yearly panel data (1986–1993). An extensive effort was expended to put together a reliable database. These data are then used to accomplish the following: first, unit cost per unit of aggregate output is measured and compared. The effect of input price changes on the unit costs are also examined. Second, the ‘gross’ Total Factor Productivity (TFP) is measured and compared. In order to compare true productive efficiency across airlines and over time, a ‘residual’ TFP index is computed after removing effects of the variables beyond managerial control such as average stage length and composition of outputs. Log-linear TFP level, and TFP growth rate regressions are used to accomplish this task. Our results show that:

1. (a) during the sample period (1986–1993), the major European carriers and the carriers in newly industrialized countries in Asia have achieved significantly higher productivity growth than their North American counterparts;

2. (b) as a result, the productivity gap between North American and other carriers have diminished significantly;

3. (c) however, on average, the North American carriers still enjoy higher productive efficiency than the carriers in Asian NICs and European carriers, but the gap is closing very rapidly; and

4. (d) it is observed that, over time, the productive efficiency of carriers competing in the same markets tends to converge.

Finally, Asian NIC carriers clearly enjoy unit cost advantages over other major carriers. Our results show that European aviation liberalization which began in 1987 appears to have produced substantial productivity gains.     

Total factor productivity in Australian domestic aviation

This paper develops measures of total factor productivity for Australian domestic air transport over the past two decades, and enables comparisons to be made with the productivity of international airlines. In recent years there has been little by way of measurement of productivity performance of the Australian domestic airlines. A major reason for this has been the poor availability of data—data typically available for international airlines are no longer available for the Australian domestic airlines. Strictly speaking, it is no longer possible to measure total factor productivity for the domestic airlines, as critical data are missing. It is possible, however, to fill in the gaps with proxies, which enable useful, albeit imperfect, productivity measures to be developed. These can also be compared to published measures for international airlines. The results enable an assessment of the productivity performance of Australian domestic airlines over the past two decades (and especially over the post deregulation period). They also enable an assessment of the extent to which productivity has caught up with that achieved in well performing airlines overseas. The results also show light on whether there is scope for new airlines, such as the proposed entrant Virgin, to achieve lower costs than the incumbents.     

The welfare effects of the allocation of airlines to different terminals

Many airports around the world have recently built, rebuilt or are in the process of constructing new terminals. Incumbent airlines and new entrants must be allocated to the new and old facilities. When spaces at airport terminals are directly allocated, the allocation should be done by taking into account the implications for airlines’ competition and social welfare, given the airlines’ network configuration. We use a theoretical model in which two airlines compete in prices with differentiated products for a given network structure. The model shows that, in general, if airlines are allocated to different terminals, the level of competition is reduced, the ticket prices are higher and the consumer surplus and social welfare are lower. Only in some routes, and under certain conditions on the market size, ticket prices may be lower.     

US open skies agreements and unlevel playing fields

We examine the relationship between ‘Open Skies’ agreements (OSAs) signed between the USA and various countries or regions and the existence of subsidies and other forms of protection that advantage one nation's airlines over those of co-signatories to an OSA. We argue that under an oligopoly market structure, strategic competition brought about by OSAs creates incentives to subsidize and/or protect domestic airlines. Such incentives are maintained or amplified by political lobbying efforts that bias civil aviation policies towards producer interests over wider measures of economic welfare. We report on financial aid and policies which have advantaged US airlines during the OSA period and which suggest that unlevel playing fields have been made more unlevel during the era of OSAs.     

Rivalry amongst European low cost airlines: Are shareholders enjoying the game?

We develop a model of quantity and price competition for low cost airlines based on announcements of new routes and their impacts on the announcer and on its rival. We find that both firms’ profits may rise or fall as a result of an announcement of new routes, depending on launching costs for the announcer, and on whether market expansion or market substitution is dominant for the rival. We present an empirical study for two European low cost airlines that shows asymmetric behaviour; while EasyJet announcements have positive effects on Ryanair’s share price, the opposite is does not occur. This suggests that an airline’s reputation for reacting in response to rivals’ announcements may affect the stock market and may thus affect announcement behaviour.     

Fuel hedging and airline operating costs

Fuel hedging is a common risk management tool used in the airline industry. But past studies have not addressed the question of whether fuel hedging creates any benefit to airline operations. This study is the first work that empirically examines the role of fuel hedging in reducing airlines’ operating costs. Using US airlines data from 2000 through 2012, we find that, after accounting for the presence of cost inefficiency, fuel-hedging airlines had about 9–12% lower operating costs, but this effect is statistically insignificant. Irrespective of the hedging status, US airlines could reduce operating costs by an average of 12–14% per year without reducing output.     

Air deregulation in China and its impact on airline competition 1994–2012

China’s air transportation has experienced rapid growth and major reforms in the past three decades, some of which have been partially successful and are still ongoing today. The paper aims to analyze China’s air deregulation experience over the last two decades and its impact on airline competition from a geographical perspective. After the establishment of the “Big Three” in 2002, the paper reveals that there has been a trade-off between the extent of deregulation and airline competition in China because the central government has tended to strengthen the “Big Three” rather than totally open the market to private and locally owned airlines. The paper uses each airline group as the basic unit of analysis and reveals that (1) the air market has been more concentrated in the “Big Three” as a result of the process of air deregulation; (2) airline competition in over two thirds of the airports and one half of the routes has increased in the last 18 years, but the core airports and trunk routes are chiefly dominated by the “Big Three”. The peripheral airports and thin routes have been operated by private and locally owned airlines; and (3) regionally, airline competition has occurred in most airports of the eastern region, and it is more intense than in the central and western regions. But even here, competition in the eastern region has however decreased in 1994–2012. The three main contributions of the paper are: (1) the use of two measures of competition in the airline market; (2) the analysis of the historical evolution of competition; and (3) an understanding the role of the geography of competition in the Chinese airline market.     

How efficient airways act as role models and in what dimensions? A superefficiency DEA model enhanced by social network analysis

In this empirical study, a five-stage methodology is used to examine the efficiency of 45 worldwide known airline companies from the financial, operation and marketing perspectives. Initially, the superefficient data envelopment model is run with inputs and outputs that are selected based on the literature review. However, because 21 out of 45 airline companies are found to be efficient based on this analysis, a stepwise regression-based mechanism is applied to four reduced models – one for each output variable – for better discrimination. The outputs are, namely, net profit margin (financial output), passengers carried, on-time departure performance (operational outputs), and customer satisfaction (marketing output). In this way, the significant input variables are found for each reduced model. In the third stage, in order to provide even more discrimination, social network-based eigenvector centrality values are used as the weights of the superefficiency scores, and the strengths and weaknesses of efficient airlines for each output are specified in terms of their related significant inputs. The results show that, when net profit margin is taken as an output, Vietnam Airlines has the top weighted superefficiency value and excels in terms of available seat kilometers and liquidity, but it should improve its debt level. Although Norwegian Airlines has the highest efficiency with respect to debt level, it is not the best role model because its eigenvector centrality value is relatively low. However, Norwegian airlines also has the highest weighted superefficiency and acts as a role model in terms of on-time departures with respect to this output. Its main strength is liquidity, and it has no significant weaknesses. On the other hand, in terms of overall satisfaction and passengers carried, Vietnam Airlines and Thai Airways are the leaders, respectively. Vietnam Airlines is the only superefficient company with respect to overall satisfaction, while the basic strengths of Thai Airways in terms of passengers carried are its employee and fleet, and it has no significant weakness. A final aggregation of the results is made by making pairwise comparisons of the relative importance of four outputs for 7 experts selected from different departments of airline companies. According to the results, Net Profit Margin has the highest priority, followed by On-time Departure and Overall Customer Satisfaction, while passengers carried has the lowest importance. Based on these relative priorities, it can be said that Vietnam Airlines can be accepted as the top performing airline company, followed by Norwegian Airlines.     

The relationship between on-time performance and airline market share: a new approach

We propose a new method of modeling the relationship between on-time performance and market share in the airline industry. The idea behind the method is that the passengers’ decision to remain (use same airline) or switch (use other airlines) at time t depends on whether they have experienced flight delays at time t−1 or not. More specifically, we posit that the passengers who experienced flight delays are more likely to switch airlines for the subsequent flight than those passengers who did not experience delays. To capture such effect, we develop an aggregate-level Markovian type model that estimates the transition probability matrices separately for the passengers who experienced flight delays at time t−1 and for those who did not experience delays. The model was calibrated with the US DOT data. The study results imply that, once experiencing flight delays, passengers are more likely to switch airlines. The results also imply that on-time performance affects a carrier’s market share primarily through the passengers’ experience, and not though the “advertisement” of performance.     

The effects of corporate governance on airline performance: Production and marketing efficiency perspectives

This study explores the relationship between operating performance and corporate governance in 30 airline companies operating in the US. First, this study applies a two-stage Data Envelopment Analysis (DEA) to evaluate the production efficiency and marketing efficiency of the airlines. Our findings indicate that, in general, there is not as much dispersion in the relative productive efficiencies of the airlines as there is in their marketing efficiencies. The low-cost airlines, on average, are more efficient carriers than the full-service ones, but less efficient marketers. Secondly, truncated regression is used to explore whether the characteristics of corporate governance affect airline performance. The results demonstrate that corporate governance influences firm performance significantly. Finally, we address the managerial decision-making matrix and make suggestions to help airline managers improve performance.     

Chapter 11 and the level playing field: Should chapter 11 be considered as a subsidy?

This paper assesses whether Chapter 11 is a form of subsidy for US airlines. US airlines have used Chapter 11 to restructure their operations. This has been criticized as a subsidy by major non US airlines and governments for a long time and recently, in the “level playing field” debate. Applying legal and economic perspectives of subsidy, we examine the different opportunities of Chapter 11 to reduce airlines’ costs. It is argued that most of the forms available, such as the modification of collective bargaining, do not constitute a subsidy. Only the termination of pension plans might involve a subsidy, but only using a legal definition of doubtful relevance since there is normally no use of public funds.     

Price dispersion,competition, and the role of online travel agents: Evidence from business routes in the Italian airline market

In this article, using data from the Italian airline market, we study the role of online travel agents (OTAs) in driving price dispersion as compared to the effect of airlines’ websites. Specifically, we investigate how distinctive factors between OTAs and airlines’ direct channels influence price dispersion. We find that after controlling for OTAs’ features related to airline competition, price dispersion should be lower in the OTA channel relative to airlines’ direct channels. On the other hand, we also find that OTAs’ features related to the presence of airline competition play in favor of higher price dispersion in such indirect channel.     

The relationship between airline performance and corporate governance amongst US Listed companies

The paper explores links between the operating performance of 30 airlines in the US and corporate governance. Initially data envelopment analysis is used to assess the relative efficiency of airlines and to investigate the contribution of inputs and outputs that affect technical efficiency. Efficiency decomposition combined with cluster analysis and multidimensional scaling is used to explore competitive advantage of airlines. Finally, the question of whether or not corporate governance affects the airlines’ performance is examined.