Supply chain process integration is very important to enhance the various aspects of operational performance. The main target of the study was to investigate the effects of Supply chain process integration on operational performance in Choice Flour Factory. Successful supply chain process integration offers competitive advantage to firms operating in a wide range of industries. Explanatory research design and census methods were employed in the study. A questionnaire was used as a research tool for collecting data. In order to analyze, interpret and present the data captured via questionnaire, Statistical Package for the Social Sciences (SPSS) version 23 was used. The collected data was analyzed using both descriptive statistics (mean & standard deviation) and inferential statistics (correlation and multiple linear regressions). Main findings of the study depicts that, there is good supply chain process integration dimension as the mean values of the (information integration, supplier integration, customer integration and internal integration) were above the minimum requirement (i.e. greater than the mean value of 2.5). From the finding of supply chain process integration variables which are used to measure operational performance, customer integration and internal integration were correlated with operational performance. Moreover, customer integration and internal integration the dimensions of supply chain process integration had a significant effect on operational performance of the factory in which information integration and supplier integration dimensions had failed to signify the effect on operational performance.