During the last decade, low-cost airlines have dominated the European air transport market. The low-cost airline industry is expected to grow at a compound annual growth rate (CAGR) of more than thirteen percent from 2022 to 2027. In this study, we conducted a comparative case study analysis to analyse and compare the entrepreneurial behaviour of two of the most prominent players in the airline industry (Ryanair and Wizz Air). For example, our first research framework was used to examine how Ryanair and Wizz Air applied entrepreneurial behaviours (innovativeness, proactiveness, and risk-taking) to respond to changes due to Brexit and the Covid-19 pandemic. According to the results from the study’s first framework and second framework (the process of foresight), Wizz Air responded more innovatively and proactively to the changes caused by Brexit and the Covid-19 pandemic. Lastly, this study found that in comparison with Ryanair, Wizz Air was able to adapt its business model more efficiently to changes in its external environment.