Liberalisation and the regional air network configuration from Nigeria to other West African Countries


  • Adeniyi Oluwakoya Redeemer’s University, Department of Transport Management
  • Dickson Dare Ajayi University of Ibadan, Department of Geography



air network, configuration, liberalisation, Nigeria, regional, West Africa


This paper examines the liberalisation and the regional air network configuration from Nigeria to other West African regions. It aims to study the impacts of liberalisation on the regional spatial structure of air networks from Nigeria to West Africa in the pre and post-liberalisation. The pre-liberalisation covers between 1988-2000, and the post-liberalisation ranges from 2001 to 2018. The methodology involves using the graph theory to calculate the route and the network topology in the pre and post-liberalisation and compare the resulting index. This hypothesis was tested using the alpha index. The alpha index analysis compares the level of connection in a pre-and post-liberalisation network via graphical depictions of each period’s route and network structure and the resulting alpha index. The pre-liberalisation alpha index for the route and network was 0.297, while the post-liberalisation alpha index was 0.334. The alpha index ranged from 0 to 1 and was the perfect network for the post‐liberalisation period. In post-liberalisation, the alpha index of the route and network are higher than in pre-liberalisation. Hence, the connection is better in post-liberalisation.


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Author Biographies

Adeniyi Oluwakoya, Redeemer’s University, Department of Transport Management

Adenyi Olufemi Oluwakoya, PhD, Redeemer’s University, Department of Transport Management; is a seasoned Transport and Logistics professional with a bias for geographical and managerial explorative of Transport and Logistics research.

Dickson Dare Ajayi, University of Ibadan, Department of Geography

Dickson Dare Ajayi, professor, University of Ibadan, Department of Geography; is a renowned Industrial and Transport geographer with immense contribution in the field of industrial and transport geography. He is a professor of Industrial and Transport Geography at the prestigious University of Ibadan, Nigeria.


Abate, M.A., 2007. The Economic Effects of Progressive Air Transport Liberalisation in Africa The case of City-Pair routes to/from Addis Ababa. Unpublished thesis Dissertation, Department, Economics. Addis Ababa: Addis Ababa University.

Abeyratne, R. (2016). Achieving competitive advantage through connectivity and innovation. An application in airline hubbing in competition and investment in air transport. In: Competition and Investment in Air Transport: Legal and Economic Issues. Cham: Springer, 131–143.

Budd, L. (2017). Airline deregulation. In: The Routledge Handbook of Transport Economics. Abingdon, Oxon; New York, NY: Routledge, 141–154.

Burghouwt, G., De Leon, P.M., De Wit, J. (2015). EU air transport liberalisation process, impacts and future considerations. Paris: OECD 2015.

Burghouwt, G., de Wit, J.G. (2015). In the wake of liberalisation: long-term developments in the EU air transport market. Transport Policy, 43, 104–113.

Bwire, S.N. (2018). Assessing the Yamoussoukro Decision: Accounting for Determinants of Air Transport Liberalisation in Africa. Doctoral dissertation. Nairobi, Kenya: United States International University-Africa.

Chen, Y., Xu, J., Xu, M. (2015). Finding community structure in spatially constrained complex networks. International Journal of Geographical Information Science, 29(6), 889–911.

Dai, L., Derudder, B., Liu, X. (2018). The evolving structure of the Southeast Asian air transport network through the lens of complex networks, 1979–2012. Journal of Transport Geography, 68, 67–77.

Daramola, A., Jaja, C., (2011). Liberalization and changing spatial configurations in Nigeria’s domestic air transport network. Journal of Transport Geography, 19(6), 1198–1209.

Dennis, N. (1994). Scheduling strategies for airline hub operations. Journal of Air Transport Management, 1(3), 131–144.

Debbage, K.G., Alkaabi, K. (2016). Market power and vertical (dis) integration? Airline networks and destination development in the United States and Dubai. In: A. Graham, A. Papatheodorou, P. Forsyth (eds.), Aviation and Tourism. London; New York: Routledge, 177–194.

Derudder, B., Witlox, F. (2016). Global cities and air transport. In: A.R. Goetz, L. Budd (eds.), The geographies of air transport. London: Routledge, 119–140.

Fox, S.J., Martín-Domingo, L. (2020). EU Air Passengers’ Rights Past, Present, and Future: In an Uncertain World (Regulation (EC) 261/2004: Evaluation and Case Study). Journal of Air Law and Commerce, 85(2). Retrieved from

Fu, X., Oum, T.H., Chen, R., Lei, Z. (2015). Dominant carrier performance and international liberalisation–The case of Northeast Asia. Transport Policy, 43, 61–75.

Grancay, M., Szikorova, N. (2014). Liberalism in foreign trade versus liberalism in air transportation: Is there a link? Panoeconomicus, 61(6), 709–721.

Hindley, B. (2019). Liberalisation of Service Transactions. In: Economic Cooperation in the Middle East. Routledge, 253–266.

Huber, H. (2016). Network structure, capacity growth and route hierarchies: the case of China’s air traffic system revisited. Transportation Planning and Technology, 39(7), 712–729.

Gillen, D., Morrison, W.G. (2017). Airline deregulation in Canada and the sustainability of competition. In: M. Finger, K. Button (eds.), Air Transport Liberalization. Northampton, MA: Edward Elgar Publishing.

Goetz, A.R. (2017). The Geography of Deregulation in the US Airline Industry. In: S. Ison (ed.), Low Cost Carriers. Routledge, 199–224.

Kahn, A. (1977). Testimony of Alfred E. Khan, Chairman… In: Aviation Regulatory Reform, Hearings before the Subcommittee on Aviation of the Committee on Public Works and Transportation, 95th Congress, 1st Sess., 1085–1166.

Kelobonye, K., McCarney, G., Xia, J.C., Swapan, M.S.H., Mao, F., Zhou, H. (2019). Relative accessibility analysis for key land uses. A spatial equity perspective. Journal of Transport Geography, 75, 82–93.

Knieps, G. (2014). Market versus state in building the aviation value chain. Journal of Air Transport Management, 41, 30–37.

Lenaerts, B., Malina, R., Allroggen, F. (2020). Measuring the quality of air transport networks: A topology of connectivity and accessibility metrics. In: A. Graham et al. (ed.). Air Transport and Regional Development Policies. Routledge, 6–30.

Lieshout, R., Malighetti, P., Redondi, R., Burghouwt, G. (2016). The competitive landscape of air transport in Europe. Journal of Transport Geography, 50, 68–82.

Niewiadomski, P. (2017). Global production networks in the passenger aviation industry. Geoforum, 87, 1–14. doi:

Ndivo, R.M. (2020). Growing Africa’s tourism through air transport liberalisation. Continental aspirations and key policy bottlenecks. In: M. Novelli, E.A. Adu-Ampong, M.A. Ribeiro (eds.), Routledge Handbook of Tourism in Africa. Abingdon, Oxon; New York, NY: Routledge, 117130.

O’Connor, K., Fuellhart, K. (2012). Cities and air services. The influence of the airline industry. Journal of Transport Geography, 22, 46–52.

Olariaga, O.D., Zea, J.F. (2018). Influence of the liberalization of the air transport industry on configuration of the traffic in the airport network. Transportation Research Procedia, 33, 43–50.

Oluwakoya, A.O. (2011). Airline services in Nigeria. An empirical analysis. International Business Management, 5(4), 218–222.

Papatheodorou, A., Arvanitis, P. (2009). Spatial evolution of airport traffic and air transport liberalisation: the case of Greece. Journal of Transport Geography, 17(5), 402–412.

Rodrigue, J.P., Comtois, C, Slack, B. (2006). The Geography of Transport System. Oxon: Routledge.

Roucolle, C., Seregina, T., Urdanoz, M. (2020). Measuring the development of airline networks: Comprehensive indicators. Transportation Research Part A. Policy and Practice, 133, 303324.

Reggiani, A., Nijkamp, P., Lanzi, D. (2015). Transport resilience and vulnerability. The role of connectivity. Transportation research part A. policy and practice, 81, 4–15.

Wang, J.J., Heinonen, T.H. (2015). Aeropolitics in East Asia. An institutional approach to air transport liberalisation. Journal of Air Transport Management, 42, 176–183.

Wensveen, J. (2016). Air transportation: A management perspective. Routledge.

Weber, M. Williams, G. (2001). Drivers of long-haul air transport route development. Journal of Transport Geography, 9(4), 243–254.

Wong, W.H., Cheung, T., Zhang, A., Wang, Y. (2019). Is spatial dispersal the dominant trend in air transport development? A global analysis for 2006–2015. Journal of Air Transport Management, 74, 1–12.

Woxenius, J. (2002). Conceptual Modeling of an Intermodal Express Transport System. Delft: International Congress on Freight Transport Automation and Multimodality.

Yusuf, H.A., Irwan, S.Z.A., Normizan, B. (2017). The Impact of Liberalization on the Performance of Nigeria Aviation Sector. International Journal of Social Science and Economic Reasearch, 2(12), 5579–5603.

Zou, L., Chen, X. (2017). The effect of code-sharing alliances on airline profitability. Journal of Air Transport Management, 58, 50–57.




How to Cite

Oluwakoya, A., & Ajayi, . D. D. (2021). Liberalisation and the regional air network configuration from Nigeria to other West African Countries. Studies of the Industrial Geography Commission of the Polish Geographical Society, 35(4), 50–63.