The development and growth of regional airports has proven to be the driving force for growth of other fields as well. This is especially true for the development of tourism. Herzegovina region is filled with tourist attractions and opportunities for growth and yet, except for Međugorje, the region has not nearly fulfilled that potential. This study seeks to show the importance of expanding air traffic and tourism. Alongside that, the study presents results of test projections of possible growth for Mostar International Airport on the basis of detailed financial data from 2012. The most important projection, the so called „unconstrained model“, shows that large infrastructure investments can lead to strong growth of traffic and, by proxy, tourism growth for the region. Analyses the state of tourism, the finances and infrastructure of the airport, competing airports, and the political climate in Bosnia and Herzegovina allow concrete conclusions and suggestions. Attracting private investors and expanding airport capacity is a necessity if traffic growth is going to be maintained. Recent data shows stagnation of traffic growth in recent years which would indicate the airport has reached the limits of current capacity. To achieve these goals work has to be done on all levels: the airport itself all the way up to the federal level. The most important questions concern the acquirement of permanent certificates and solving difficulties with jet fuel supply at a more competitive price. A more detailed SWOT analysis shows the Mostar airport has great potential with threats mostly coming from outside the company itself, and have more to do with the economic and political climate in the country. Finally, the constrained model of growth shows the importance of attracting private investors since it predicts significantly lower rates of overall growth than the unconstrained model. The study shows exceptional potential for growth at the Mostar International Airport, as well as the entire Herzegovina region provided regulation complications are settled and infrastructure investments are made.