This work presents experimental vapor–liquid equilibrium data of CO₂ over aqueous blends of N-ethyl-ethanolamine (EAE) + N-methyl-diethanolamine (MDEA) and N-ethyl-ethanolamine (EAE) + 2-amino-2-methyl-1-propanol (AMP) at temperatures of (303.1, 313.1, and 323.1) K and CO₂ pressure varying from (0.3 to 550) kPa. Different concentrations of (EAE + MDEA) blends, namely, 0.06/0.24, 0.12/0.18, 0.18/0.12, and 0.24/0.06 mass fraction (mole fraction ratio = 0.0163/0.0487, 0.0328/0.0368, 0.0494/0.0246, 0.0666/0.0125, respectively) were used to determine the vapor–liquid equilibrium of carbon dioxide. Blends of (EAE + AMP) were also studied (mass fraction ratio of 0.06/0.24, 0.12/0.18, 0.15/0.15, 0.24/0.06 or mole fraction ratio = 0.0168/0.0672, 0.0336/0.0504, 0.0420/0.0420, 0.0672/0.0168, respectively) to discover one appropriate composition with a maximum CO₂ absorption capability. The aqueous (EAE + MDEA/AMP) blends evolved as better solvents in comparison to aqueous (DEA + MDEA/AMP) and (MAE + MDEA/AMP) with respect to their CO₂ absorption capability.