This work presents a study on adsorption of ionic surfactants at the air-water interface in the presence of a 1: 1, 2: 1, or 3: 1 salt. Coalescence of air bubbles in the aqueous solutions of these surfactants and salts was studied by measuring the bubble rest time. Cetyl trimethyl ammonium bromide (CTAB) was used as the cationic surfactant and sodium dodecyl sulfate (SDS) was used as the anionic surfactant. NaCl, MgCl2, and AlCl3 were used as the salts. It was observed that surface tension decreased and rest time increased with the addition of salt. In some of the systems, rest time decreased when the amount of salt was increased beyond a certain concentration. The amount of salt required to reduce the surface tension decreased in the order: NaCl > MgCl2 > AlCl3. A similar sequence was observed for the bubble rest times also. A stochastic model was used to fit the bubble rest time distributions.