The aim of this study is to reveal the impact of Environmental Sustainability (CS), Socio-economic Resilience and Conditions (SDK) and Travel and Tourism Demand Pressure and Impact (STTE), which are included in the Travel and Tourism Sustainability (STS) sub-index, on tourism revenues and tourist arrivals for a dataset of 117 countries within the scope of the Travel and Tourism Development Index (TTDI), and to examine how this impact changes at different levels of tourism revenues and tourist arrivals. For this purpose, how tourism revenues and tourist arrivals are affected by travel and tourism sustainability at different quantile levels is analyzed using quantile regression analysis. It is concluded that TTDI and STS variables have a positive and significant effect on tourist arrivals and tourism revenues. CS, SDK variables have a significant effect on tourist arrivals, while the STTE variable has no effect. It was found that SDK and STTE variables have a significant effect on tourism revenues in different quantiles, while the CS variable has no effect. In conclusion, the analyses conducted in this study reveal that a country’s tourism development is determined by travel and tourism sustainability