Comparative study using computational fluid dynamics (CFD) of aircraft Eurofighter Typhoon and Dassault Rafale is carried out while presenting the importance of examining the complete aircraft including all the components and its cruciality in enhancing the performance during flight. The results obtained using ANSYS Fluent (19.2) yields variation in temperature, pressure and shear stress on the surface of both the aircraft. The comparison over the complete surface reveals that Eurofighter is under lower pressure (2% lower for Mach 1 and 3.33% for Mach 1.8), the shear stress is always smaller on Rafale than on the Eurofighter (78.6% lower for Mach 1 and 73% for Mach 1.8) and the temperature on Rafale is higher by 1% for Mach 1 whereas lower by 1.25% for Mach 1.8. On the other hand, during analysis of the front section, all the parameters show an increment with the rise in speed (Mach 1 to Mach 1.8) for the case of Rafale whereas the design of Eurofighter is such that some unforeseen behaviour is noticed. For example, the pressure plot for the speeds corresponding to Mach 1 and Mach 1.8 comprise of several crests and throughs whose amplitude varies along the highlighted length and the shear stress is minimum for Mach 1.5. These results show that the structure and design of aircraft have colossal effect on the performance of the aircraft based on the preferred purpose that exhibit the extremity of the parameters discussed.